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| <h5>MapReduce REST APIs</h5> |
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| <h5>YARN</h5> |
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| <a href="../../../hadoop-yarn/hadoop-yarn-site/SecureContainer.html">Secure Containers</a> |
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| <a href="../../../hadoop-yarn/hadoop-yarn-site/GracefulDecommission.html">Graceful Decommission</a> |
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| <a href="../../../hadoop-yarn/hadoop-yarn-site/OpportunisticContainers.html">Opportunistic Containers</a> |
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| <a href="../../../hadoop-yarn/hadoop-yarn-site/Federation.html">YARN Federation</a> |
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| <a href="../../../hadoop-yarn/hadoop-yarn-site/SharedCache.html">Shared Cache</a> |
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| <a href="../../../hadoop-yarn/hadoop-yarn-site/UsingGpus.html">Using GPU</a> |
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| <a href="../../../hadoop-yarn/hadoop-yarn-site/UsingFPGA.html">Using FPGA</a> |
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| <a href="../../../hadoop-yarn/hadoop-yarn-site/PlacementConstraints.html">Placement Constraints</a> |
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| <a href="../../../hadoop-yarn/hadoop-yarn-site/YarnUI2.html">YARN UI2</a> |
| </li> |
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| <h5>YARN REST APIs</h5> |
| <ul> |
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| <a href="../../../hadoop-yarn/hadoop-yarn-site/WebServicesIntro.html">Introduction</a> |
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| <a href="../../../hadoop-yarn/hadoop-yarn-site/ResourceManagerRest.html">Resource Manager</a> |
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| <a href="../../../hadoop-yarn/hadoop-yarn-site/NodeManagerRest.html">Node Manager</a> |
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| <a href="../../../hadoop-yarn/hadoop-yarn-site/TimelineServer.html#Timeline_Server_REST_API_v1">Timeline Server</a> |
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| <a href="../../../hadoop-yarn/hadoop-yarn-site/TimelineServiceV2.html#Timeline_Service_v.2_REST_API">Timeline Service V.2</a> |
| </li> |
| </ul> |
| <h5>YARN Service</h5> |
| <ul> |
| <li class="none"> |
| <a href="../../../hadoop-yarn/hadoop-yarn-site/yarn-service/Overview.html">Overview</a> |
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| <a href="../../../hadoop-yarn/hadoop-yarn-site/yarn-service/QuickStart.html">QuickStart</a> |
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| <a href="../../../hadoop-yarn/hadoop-yarn-site/yarn-service/Concepts.html">Concepts</a> |
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| <a href="../../../hadoop-yarn/hadoop-yarn-site/yarn-service/YarnServiceAPI.html">Yarn Service API</a> |
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| <a href="../../../hadoop-yarn/hadoop-yarn-site/yarn-service/ServiceDiscovery.html">Service Discovery</a> |
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| <a href="../../../hadoop-yarn/hadoop-yarn-site/yarn-service/SystemServices.html">System Services</a> |
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| <h5>Hadoop Compatible File Systems</h5> |
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| <h5>Reference</h5> |
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| <h5>Configuration</h5> |
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| <h1>Troubleshooting</h1> |
| <ul> |
| <li><a href="#Introduction"> Introduction</a></li> |
| <li><a href="#Classpath_Setup"> Classpath Setup</a> |
| <ul> |
| <li><a href="#ClassNotFoundException:_org.apache.hadoop.fs.s3a.S3AFileSystem">ClassNotFoundException: org.apache.hadoop.fs.s3a.S3AFileSystem</a></li> |
| <li><a href="#ClassNotFoundException:_com.amazonaws.services.s3.AmazonS3Client">ClassNotFoundException: com.amazonaws.services.s3.AmazonS3Client</a></li> |
| <li><a href="#java.lang.NoSuchMethodError_referencing_a_com.amazonaws_class">java.lang.NoSuchMethodError referencing a com.amazonaws class</a></li> |
| <li><a href="#java.lang.NoSuchMethodError_referencing_an_org.apache.hadoop_class">java.lang.NoSuchMethodError referencing an org.apache.hadoop class</a></li> |
| <li><a href="#java.lang.NoClassDefFoundError:_org.2Fwildfly.2Fopenssl.2FOpenSSLProvider">java.lang.NoClassDefFoundError: org/wildfly/openssl/OpenSSLProvider</a></li></ul></li> |
| <li><a href="#Authentication_Failure"> Authentication Failure</a> |
| <ul> |
| <li><a href="#Authentication_failure_.E2.80.9CThe_Filesystem_URI_contains_login_details..E2.80.9D">Authentication failure “The Filesystem URI contains login details.”</a></li> |
| <li><a href="#Authentication_failure_due_to_clock_skew">Authentication failure due to clock skew</a></li> |
| <li><a href="#a.E2.80.9CBad_Request.E2.80.9D_exception_when_working_with_AWS_S3_Frankfurt.2C_Seoul.2C_or_other_.E2.80.9CV4.E2.80.9D_endpoint"> “Bad Request” exception when working with AWS S3 Frankfurt, Seoul, or other “V4” endpoint</a></li> |
| <li><a href="#Class_does_not_implement_AWSCredentialsProvider">Class does not implement AWSCredentialsProvider</a></li></ul></li> |
| <li><a href="#a.E2.80.9CThe_security_token_included_in_the_request_is_invalid.E2.80.9D"> “The security token included in the request is invalid”</a> |
| <ul> |
| <li><a href="#AccessDeniedException_.E2.80.9CThe_AWS_Access_Key_Id_you_provided_does_not_exist_in_our_records..E2.80.9D"> AccessDeniedException “The AWS Access Key Id you provided does not exist in our records.”</a></li> |
| <li><a href="#AccessDeniedException_All_access_to_this_object_has_been_disabled"> AccessDeniedException All access to this object has been disabled</a></li> |
| <li><a href="#AccessDeniedException_.E2.80.9CAccess_denied.E2.80.9D_when_trying_to_manipulate_data"> AccessDeniedException “Access denied” when trying to manipulate data</a></li> |
| <li><a href="#AccessDeniedException_in_rename.2C_.E2.80.9CMultiObjectDeleteException:_One_or_more_objects_could_not_be_deleted.E2.80.9D"> AccessDeniedException in rename, “MultiObjectDeleteException: One or more objects could not be deleted”</a></li> |
| <li><a href="#AccessDeniedException_when_using_SSE-KMS"> AccessDeniedException when using SSE-KMS</a></li> |
| <li><a href="#a.E2.80.9CUnable_to_find_a_region_via_the_region_provider_chain..E2.80.9D_when_using_session_credentials."> “Unable to find a region via the region provider chain.” when using session credentials.</a></li></ul></li> |
| <li><a href="#Connectivity_Problems"> Connectivity Problems</a> |
| <ul> |
| <li><a href="#Error_message_.E2.80.9CThe_bucket_you_are_attempting_to_access_must_be_addressed_using_the_specified_endpoint.E2.80.9D"> Error message “The bucket you are attempting to access must be addressed using the specified endpoint”</a></li> |
| <li><a href="#a.E2.80.9CTimeout_waiting_for_connection_from_pool.E2.80.9D_when_writing_data"> “Timeout waiting for connection from pool” when writing data</a></li> |
| <li><a href="#a.E2.80.9CTimeout_waiting_for_connection_from_pool.E2.80.9D_when_reading_data">“Timeout waiting for connection from pool” when reading data</a></li> |
| <li><a href="#NoHttpResponseException">NoHttpResponseException</a></li> |
| <li><a href="#Out_of_heap_memory_when_writing_with_via_Fast_Upload">Out of heap memory when writing with via Fast Upload</a></li> |
| <li><a href="#MultiObjectDeleteException_during_delete_or_rename_of_files">MultiObjectDeleteException during delete or rename of files</a></li> |
| <li><a href="#a.E2.80.9CFailed_to_Sanitize_XML_document.E2.80.9D">“Failed to Sanitize XML document”</a></li> |
| <li><a href="#JSON_Parse_Error_from_AWS_SDK">JSON Parse Error from AWS SDK</a></li></ul></li> |
| <li><a href="#Other_Errors"> Other Errors</a> |
| <ul> |
| <li><a href="#SdkClientException_Unable_to_verify_integrity_of_data_upload"> SdkClientException Unable to verify integrity of data upload</a></li> |
| <li><a href="#AWSS3IOException_The_Content-MD5_you_specified_did_not_match_what_we_received">AWSS3IOException The Content-MD5 you specified did not match what we received</a></li> |
| <li><a href="#When_writing_data:_.E2.80.9Cjava.io.FileNotFoundException:_Completing_multi-part_upload.E2.80.9D">When writing data: “java.io.FileNotFoundException: Completing multi-part upload”</a></li> |
| <li><a href="#Application_hangs_after_reading_a_number_of_files">Application hangs after reading a number of files</a></li> |
| <li><a href="#Issue:_when_writing_data.2C_HTTP_Exceptions_logged_at_info_from_AmazonHttpClient">Issue: when writing data, HTTP Exceptions logged at info from AmazonHttpClient</a></li> |
| <li><a href="#AWSBadRequestException_IllegalLocationConstraintException.2FThe_unspecified_location_constraint_is_incompatible">AWSBadRequestException IllegalLocationConstraintException/The unspecified location constraint is incompatible</a></li></ul></li> |
| <li><a href="#File_System_Semantics">File System Semantics</a> |
| <ul> |
| <li><a href="#File_not_visible.2Fsaved">File not visible/saved</a></li> |
| <li><a href="#File_flush.28.29_calls_do_not_save_data_to_S3">File flush() calls do not save data to S3</a></li> |
| <li><a href="#UnsupportedOperationException_.E2.80.9CS3A_streams_are_not_Syncable._See_HADOOP-17597..E2.80.9D"> UnsupportedOperationException “S3A streams are not Syncable. See HADOOP-17597.”</a></li> |
| <li><a href="#RemoteFileChangedException_and_read-during-overwrite">RemoteFileChangedException and read-during-overwrite</a></li> |
| <li><a href="#RemoteFileChangedException:_.E2.80.9CFile_to_rename_not_found_on_guarded_S3_store_after_repeated_attempts.E2.80.9D">RemoteFileChangedException: “File to rename not found on guarded S3 store after repeated attempts”</a></li></ul></li> |
| <li><a href="#Rename_not_behaving_as_.E2.80.9Cexpected.E2.80.9D">Rename not behaving as “expected”</a></li> |
| <li><a href="#S3_Server_Side_Encryption"> S3 Server Side Encryption</a> |
| <ul> |
| <li><a href="#AWSS3IOException_KMS.NotFoundException_.E2.80.9CInvalid_arn.E2.80.9D_when_using_SSE-KMS">AWSS3IOException KMS.NotFoundException “Invalid arn” when using SSE-KMS</a></li> |
| <li><a href="#Using_SSE-C_.E2.80.9CBad_Request.E2.80.9D">Using SSE-C “Bad Request”</a></li></ul></li> |
| <li><a href="#Message_appears_in_logs_.E2.80.9CNot_all_bytes_were_read_from_the_S3ObjectInputStream.E2.80.9D"> Message appears in logs “Not all bytes were read from the S3ObjectInputStream”</a> |
| <ul> |
| <li><a href="#PathIOException_Number_of_parts_in_multipart_upload_exceeded."> PathIOException Number of parts in multipart upload exceeded.</a></li> |
| <li><a href="#UnknownStoreException_Bucket_does_not_exist."> UnknownStoreException Bucket does not exist.</a></li></ul></li> |
| <li><a href="#Other_Issues">Other Issues</a> |
| <ul> |
| <li><a href="#Enabling_low-level_logging"> Enabling low-level logging</a></li></ul></li> |
| <li><a href="#Reducing_failures_by_configuring_retry_policy"> Reducing failures by configuring retry policy</a> |
| <ul> |
| <li><a href="#Tuning_S3Guard_open.2Frename_Retry_Policies"> Tuning S3Guard open/rename Retry Policies</a></li> |
| <li><a href="#Tuning_AWS_request_timeouts"> Tuning AWS request timeouts</a></li></ul></li></ul> |
| |
| <div class="section"> |
| <h2><a name="Introduction"></a><a name="introduction"></a> Introduction</h2> |
| <p>Common problems working with S3 are</p> |
| <ol style="list-style-type: decimal"> |
| |
| <li>Classpath setup</li> |
| <li>Authentication</li> |
| <li>Incorrect configuration</li> |
| </ol> |
| <p>Troubleshooting IAM Assumed Roles is covered in its <a href="assumed_roles.html#troubleshooting">specific documentation</a>.</p></div> |
| <div class="section"> |
| <h2><a name="Classpath_Setup"></a><a name="classpath"></a> Classpath Setup</h2> |
| <p>Classpath is usually the first problem. For the S3A filesystem client, you need the Hadoop-specific filesystem clients, the very same AWS SDK library which Hadoop was built against, and any dependent libraries compatible with Hadoop and the specific JVM.</p> |
| <p>The classpath must be set up for the process talking to S3: if this is code running in the Hadoop cluster, the JARs must be on that classpath. That includes <tt>distcp</tt> and the <tt>hadoop fs</tt> command.</p> |
| <p><b>Critical:</b> <i>Do not attempt to “drop in” a newer version of the AWS SDK than that which the Hadoop version was built with</i> Whatever problem you have, changing the AWS SDK version will not fix things, only change the stack traces you see.</p> |
| <p>Similarly, don’t try and mix a <tt>hadoop-aws</tt> JAR from one Hadoop release with that of any other. The JAR must be in sync with <tt>hadoop-common</tt> and some other Hadoop JARs.</p> |
| <p><i>Randomly changing hadoop- and aws- JARs in the hope of making a problem “go away” or to gain access to a feature you want, will not lead to the outcome you desire.</i></p> |
| <p>Tip: you can use <a class="externalLink" href="http://mvnrepository.com/artifact/org.apache.hadoop/hadoop-aws">mvnrepository</a> to determine the dependency version requirements of a specific <tt>hadoop-aws</tt> JAR published by the ASF.</p> |
| <div class="section"> |
| <h3><a name="ClassNotFoundException:_org.apache.hadoop.fs.s3a.S3AFileSystem"></a><tt>ClassNotFoundException: org.apache.hadoop.fs.s3a.S3AFileSystem</tt></h3> |
| <p>These are Hadoop filesystem client classes, found in the <tt>hadoop-aws</tt> JAR. An exception reporting this class as missing means that this JAR is not on the classpath.</p></div> |
| <div class="section"> |
| <h3><a name="ClassNotFoundException:_com.amazonaws.services.s3.AmazonS3Client"></a><tt>ClassNotFoundException: com.amazonaws.services.s3.AmazonS3Client</tt></h3> |
| <p>(or other <tt>com.amazonaws</tt> class.)</p> |
| <p>This means that the <tt>aws-java-sdk-bundle.jar</tt> JAR is not on the classpath: add it.</p></div> |
| <div class="section"> |
| <h3><a name="java.lang.NoSuchMethodError_referencing_a_com.amazonaws_class"></a><tt>java.lang.NoSuchMethodError</tt> referencing a <tt>com.amazonaws</tt> class</h3> |
| <p>This can be triggered by incompatibilities between the AWS SDK on the classpath and the version which Hadoop was compiled with.</p> |
| <p>The AWS SDK JARs change their signature enough between releases that the only way to safely update the AWS SDK version is to recompile Hadoop against the later version.</p> |
| <p>The sole fix is to use the same version of the AWS SDK with which Hadoop was built.</p> |
| <p>This can also be caused by having more than one version of an AWS SDK JAR on the classpath. If the full <tt>aws-java-sdk-bundle<</tt> JAR is on the classpath, do not add any of the <tt>aws-sdk-</tt> JARs.</p></div> |
| <div class="section"> |
| <h3><a name="java.lang.NoSuchMethodError_referencing_an_org.apache.hadoop_class"></a><tt>java.lang.NoSuchMethodError</tt> referencing an <tt>org.apache.hadoop</tt> class</h3> |
| <p>This happens if the <tt>hadoop-aws</tt> and <tt>hadoop-common</tt> JARs are out of sync. You can’t mix them around: they have to have exactly matching version numbers.</p></div> |
| <div class="section"> |
| <h3><a name="java.lang.NoClassDefFoundError:_org.2Fwildfly.2Fopenssl.2FOpenSSLProvider"></a><tt>java.lang.NoClassDefFoundError: org/wildfly/openssl/OpenSSLProvider</tt></h3> |
| <p>This happens when <a href="performance.html#openssl">OpenSSL performance acceleration</a> has been configured by setting <tt>fs.s3a.ssl.channel.mode</tt> to <tt>openssl</tt> but the wildfly JAR is not on the classpath.</p> |
| <p>Fixes: * Add it to the classpath * Use a different channel mode, including <tt>default</tt>, which will revert to the JVM SSL implementation when the wildfly or native openssl libraries cannot be loaded.</p></div></div> |
| <div class="section"> |
| <h2><a name="Authentication_Failure"></a><a name="authentication"></a> Authentication Failure</h2> |
| <p>If Hadoop cannot authenticate with the S3 service endpoint, the client retries a number of times before eventually failing. When it finally gives up, it will report a message about signature mismatch:</p> |
| |
| <div> |
| <div> |
| <pre class="source">com.amazonaws.services.s3.model.AmazonS3Exception: |
| The request signature we calculated does not match the signature you provided. |
| Check your key and signing method. |
| (Service: Amazon S3; Status Code: 403; Error Code: SignatureDoesNotMatch, |
| </pre></div></div> |
| |
| <p>The likely cause is that you either have the wrong credentials or somehow the credentials were not readable on the host attempting to read or write the S3 Bucket.</p> |
| <p>Enabling debug logging for the package <tt>org.apache.hadoop.fs.s3a</tt> can help provide more information.</p> |
| <p>The most common cause is that you have the wrong credentials for any of the current authentication mechanism(s) —or somehow the credentials were not readable on the host attempting to read or write the S3 Bucket. However, there are a couple of system configuration problems (JVM version, system clock) which also need to be checked.</p> |
| <p>Most common: there’s an error in the configuration properties.</p> |
| <ol style="list-style-type: decimal"> |
| |
| <li> |
| |
| <p>Make sure that the name of the bucket is the correct one. That is: check the URL.</p> |
| </li> |
| <li> |
| |
| <p>If using a private S3 server, make sure endpoint in <tt>fs.s3a.endpoint</tt> has been set to this server -and that the client is not accidentally trying to authenticate with the public Amazon S3 service.</p> |
| </li> |
| <li> |
| |
| <p>Make sure the property names are correct. For S3A, they are <tt>fs.s3a.access.key</tt> and <tt>fs.s3a.secret.key</tt> —you cannot just copy the S3N properties and replace <tt>s3n</tt> with <tt>s3a</tt>.</p> |
| </li> |
| <li> |
| |
| <p>Make sure the properties are visible to the process attempting to talk to the object store. Placing them in <tt>core-site.xml</tt> is the standard mechanism.</p> |
| </li> |
| <li> |
| |
| <p>If using session authentication, the session may have expired. Generate a new session token and secret.</p> |
| </li> |
| <li> |
| |
| <p>If using environment variable-based authentication, make sure that the relevant variables are set in the environment in which the process is running.</p> |
| </li> |
| </ol> |
| <p>The standard first step is: try to use the AWS command line tools with the same credentials, through a command such as:</p> |
| |
| <div> |
| <div> |
| <pre class="source">hadoop fs -ls s3a://my-bucket/ |
| </pre></div></div> |
| |
| <p>Note the trailing “/” here; without that the shell thinks you are trying to list your home directory under the bucket, which will only exist if explicitly created.</p> |
| <p>Finally, if you set the environment variables, you can take advantage of S3A’s support of environment-variable authentication by attempting the same ls operation. That is: unset the <tt>fs.s3a</tt> secrets and rely on the environment variables.</p> |
| <div class="section"> |
| <h3><a name="Authentication_failure_.E2.80.9CThe_Filesystem_URI_contains_login_details..E2.80.9D"></a>Authentication failure “The Filesystem URI contains login details.”</h3> |
| |
| <div> |
| <div> |
| <pre class="source">The Filesystem URI contains login details. This authentication mechanism is no longer supported. |
| </pre></div></div> |
| |
| <p>The S3A connector no longer supports the dangerously insecure mechanism of passing login details within the S3A URLs.</p> |
| <p>Fix: use a more secure mechanism to pass down the secrets.</p></div> |
| <div class="section"> |
| <h3><a name="Authentication_failure_due_to_clock_skew"></a>Authentication failure due to clock skew</h3> |
| <p>The timestamp is used in signing to S3, so as to defend against replay attacks. If the system clock is too far behind <i>or ahead</i> of Amazon’s, requests will be rejected.</p> |
| <p>This can surface as the situation where read requests are allowed, but operations which write to the bucket are denied.</p> |
| <p>Check the system clock.</p></div> |
| <div class="section"> |
| <h3><a name="a.E2.80.9CBad_Request.E2.80.9D_exception_when_working_with_AWS_S3_Frankfurt.2C_Seoul.2C_or_other_.E2.80.9CV4.E2.80.9D_endpoint"></a><a name="bad_request"></a> “Bad Request” exception when working with AWS S3 Frankfurt, Seoul, or other “V4” endpoint</h3> |
| <p>S3 Frankfurt and Seoul <i>only</i> support <a class="externalLink" href="http://docs.aws.amazon.com/AmazonS3/latest/API/sig-v4-authenticating-requests.html">the V4 authentication API</a>.</p> |
| <p>Requests using the V2 API will be rejected with 400 <tt>Bad Request</tt></p> |
| |
| <div> |
| <div> |
| <pre class="source">$ bin/hadoop fs -ls s3a://frankfurt/ |
| WARN s3a.S3AFileSystem: Client: Amazon S3 error 400: 400 Bad Request; Bad Request (retryable) |
| |
| com.amazonaws.services.s3.model.AmazonS3Exception: Bad Request (Service: Amazon S3; |
| Status Code: 400; Error Code: 400 Bad Request; Request ID: 923C5D9E75E44C06), |
| S3 Extended Request ID: HDwje6k+ANEeDsM6aJ8+D5gUmNAMguOk2BvZ8PH3g9z0gpH+IuwT7N19oQOnIr5CIx7Vqb/uThE= |
| at com.amazonaws.http.AmazonHttpClient.handleErrorResponse(AmazonHttpClient.java:1182) |
| at com.amazonaws.http.AmazonHttpClient.executeOneRequest(AmazonHttpClient.java:770) |
| at com.amazonaws.http.AmazonHttpClient.executeHelper(AmazonHttpClient.java:489) |
| at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:310) |
| at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:3785) |
| at com.amazonaws.services.s3.AmazonS3Client.headBucket(AmazonS3Client.java:1107) |
| at com.amazonaws.services.s3.AmazonS3Client.doesBucketExist(AmazonS3Client.java:1070) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.verifyBucketExists(S3AFileSystem.java:307) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.initialize(S3AFileSystem.java:284) |
| at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2793) |
| at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:101) |
| at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2830) |
| at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2812) |
| at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:389) |
| at org.apache.hadoop.fs.Path.getFileSystem(Path.java:356) |
| at org.apache.hadoop.fs.shell.PathData.expandAsGlob(PathData.java:325) |
| at org.apache.hadoop.fs.shell.Command.expandArgument(Command.java:235) |
| at org.apache.hadoop.fs.shell.Command.expandArguments(Command.java:218) |
| at org.apache.hadoop.fs.shell.FsCommand.processRawArguments(FsCommand.java:103) |
| at org.apache.hadoop.fs.shell.Command.run(Command.java:165) |
| at org.apache.hadoop.fs.FsShell.run(FsShell.java:315) |
| at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76) |
| at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:90) |
| at org.apache.hadoop.fs.FsShell.main(FsShell.java:373) |
| ls: doesBucketExist on frankfurt-new: com.amazonaws.services.s3.model.AmazonS3Exception: |
| Bad Request (Service: Amazon S3; Status Code: 400; Error Code: 400 Bad Request; |
| </pre></div></div> |
| |
| <p>This happens when trying to work with any S3 service which only supports the “V4” signing API —but the client is configured to use the default S3 service endpoint.</p> |
| <p>The S3A client needs to be given the endpoint to use via the <tt>fs.s3a.endpoint</tt> property.</p> |
| <p>As an example, the endpoint for S3 Frankfurt is <tt>s3.eu-central-1.amazonaws.com</tt>:</p> |
| |
| <div> |
| <div> |
| <pre class="source"><property> |
| <name>fs.s3a.endpoint</name> |
| <value>s3.eu-central-1.amazonaws.com</value> |
| </property> |
| </pre></div></div> |
| </div> |
| <div class="section"> |
| <h3><a name="Class_does_not_implement_AWSCredentialsProvider"></a><tt>Class does not implement AWSCredentialsProvider</tt></h3> |
| <p>A credential provider listed in <tt>fs.s3a.aws.credentials.provider</tt> does not implement the interface <tt>com.amazonaws.auth.AWSCredentialsProvider</tt>.</p> |
| |
| <div> |
| <div> |
| <pre class="source"> Cause: java.lang.RuntimeException: java.io.IOException: Class class com.amazonaws.auth.EnvironmentVariableCredentialsProvider does not implement AWSCredentialsProvider |
| at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:686) |
| at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:621) |
| at org.apache.spark.sql.hive.client.HiveClientImpl.newState(HiveClientImpl.scala:219) |
| at org.apache.spark.sql.hive.client.HiveClientImpl.<init>(HiveClientImpl.scala:126) |
| at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) |
| at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) |
| at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) |
| at java.lang.reflect.Constructor.newInstance(Constructor.java:423) |
| at org.apache.spark.sql.hive.client.IsolatedClientLoader.createClient(IsolatedClientLoader.scala:306) |
| at org.apache.spark.sql.hive.HiveUtils$.newClientForMetadata(HiveUtils.scala:433) |
| ... |
| Cause: java.io.IOException: Class class com.amazonaws.auth.EnvironmentVariableCredentialsProvider does not implement AWSCredentialsProvider |
| at org.apache.hadoop.fs.s3a.S3AUtils.createAWSCredentialProvider(S3AUtils.java:722) |
| at org.apache.hadoop.fs.s3a.S3AUtils.buildAWSProviderList(S3AUtils.java:687) |
| at org.apache.hadoop.fs.s3a.S3AUtils.createAWSCredentialProviderSet(S3AUtils.java:620) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.bindAWSClient(S3AFileSystem.java:673) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.initialize(S3AFileSystem.java:414) |
| at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:3462) |
| at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:171) |
| at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:3522) |
| at org.apache.hadoop.fs.FileSystem$Cache.getUnique(FileSystem.java:3496) |
| at org.apache.hadoop.fs.FileSystem.newInstance(FileSystem.java:591) |
| </pre></div></div> |
| |
| <p>There’s two main causes</p> |
| <ol style="list-style-type: decimal"> |
| |
| <li>A class listed there is not an implementation of the interface. Fix: review the settings and correct as appropriate.</li> |
| <li>A class listed there does implement the interface, but it has been loaded in a different classloader, so the JVM does not consider it to be an implementation. Fix: learn the entire JVM classloader model and see if you can then debug it. Tip: having both the AWS Shaded SDK and individual AWS SDK modules on your classpath may be a cause of this.</li> |
| </ol> |
| <p>If you see this and you are trying to use the S3A connector with Spark, then the cause can be that the isolated classloader used to load Hive classes is interfering with the S3A connector’s dynamic loading of <tt>com.amazonaws</tt> classes. To fix this, declare that that the classes in the aws SDK are loaded from the same classloader which instantiated the S3A FileSystem instance:</p> |
| |
| <div> |
| <div> |
| <pre class="source">spark.sql.hive.metastore.sharedPrefixes com.amazonaws. |
| </pre></div></div> |
| </div></div> |
| <div class="section"> |
| <h2><a name="a.E2.80.9CThe_security_token_included_in_the_request_is_invalid.E2.80.9D"></a><a name="access_denied"></a> “The security token included in the request is invalid”</h2> |
| <p>You are trying to use session/temporary credentials and the session token supplied is considered invalid.</p> |
| |
| <div> |
| <div> |
| <pre class="source">org.apache.hadoop.fs.s3a.AWSBadRequestException: initTable on bucket: |
| com.amazonaws.services.dynamodbv2.model.AmazonDynamoDBException: |
| The security token included in the request is invalid |
| (Service: AmazonDynamoDBv2; Status Code: 400; Error Code: UnrecognizedClientException) |
| </pre></div></div> |
| |
| <p>This can surface if your configuration is setting the <tt>fs.s3a.secret.key</tt>, <tt>fs.s3a.access.key</tt> and <tt>fs.s3a.session.key</tt> correctly, but the AWS credential provider list set in <tt>AWS_CREDENTIALS_PROVIDER</tt> does not include <tt>org.apache.hadoop.fs.s3a.TemporaryAWSCredentialsProvider</tt>.</p> |
| <div class="section"> |
| <h3><a name="AccessDeniedException_.E2.80.9CThe_AWS_Access_Key_Id_you_provided_does_not_exist_in_our_records..E2.80.9D"></a><a name="access_denied_unknown-ID"></a> AccessDeniedException “The AWS Access Key Id you provided does not exist in our records.”</h3> |
| <p>The value of <tt>fs.s3a.access.key</tt> does not match a known access key ID. It may be mistyped, or the access key may have been deleted by one of the account managers.</p> |
| |
| <div> |
| <div> |
| <pre class="source">java.nio.file.AccessDeniedException: bucket: doesBucketExist on bucket: |
| com.amazonaws.services.s3.model.AmazonS3Exception: |
| The AWS Access Key Id you provided does not exist in our records. |
| (Service: Amazon S3; Status Code: 403; Error Code: InvalidAccessKeyId; |
| at org.apache.hadoop.fs.s3a.S3AUtils.translateException(S3AUtils.java:214) |
| at org.apache.hadoop.fs.s3a.Invoker.once(Invoker.java:111) |
| at org.apache.hadoop.fs.s3a.Invoker.lambda$retry$3(Invoker.java:260) |
| at org.apache.hadoop.fs.s3a.Invoker.retryUntranslated(Invoker.java:314) |
| at org.apache.hadoop.fs.s3a.Invoker.retry(Invoker.java:256) |
| at org.apache.hadoop.fs.s3a.Invoker.retry(Invoker.java:231) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.verifyBucketExists(S3AFileSystem.java:366) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.initialize(S3AFileSystem.java:302) |
| at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:3354) |
| at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:124) |
| at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:3403) |
| at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:3371) |
| at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:477) |
| at org.apache.hadoop.fs.contract.AbstractBondedFSContract.init(AbstractBondedFSContract.java:72) |
| at org.apache.hadoop.fs.contract.AbstractFSContractTestBase.setup(AbstractFSContractTestBase.java:177) |
| at org.apache.hadoop.fs.s3a.commit.AbstractCommitITest.setup(AbstractCommitITest.java:163) |
| at org.apache.hadoop.fs.s3a.commit.AbstractITCommitMRJob.setup(AbstractITCommitMRJob.java:129) |
| at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) |
| at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) |
| at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) |
| at java.lang.reflect.Method.invoke(Method.java:498) |
| at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47) |
| at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) |
| at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44) |
| at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24) |
| at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27) |
| at org.junit.rules.ExternalResource$1.evaluate(ExternalResource.java:48) |
| at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55) |
| at org.junit.internal.runners.statements.FailOnTimeout$StatementThread.run(FailOnTimeout.java:74) |
| Caused by: com.amazonaws.services.s3.model.AmazonS3Exception: |
| The AWS Access Key Id you provided does not exist in our records. |
| (Service: Amazon S3; Status Code: 403; Error Code: InvalidAccessKeyId; |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1638) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1303) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1055) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:743) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:717) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:699) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:667) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:649) |
| at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:513) |
| at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4229) |
| at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4176) |
| at com.amazonaws.services.s3.AmazonS3Client.getAcl(AmazonS3Client.java:3381) |
| at com.amazonaws.services.s3.AmazonS3Client.getBucketAcl(AmazonS3Client.java:1160) |
| at com.amazonaws.services.s3.AmazonS3Client.getBucketAcl(AmazonS3Client.java:1150) |
| at com.amazonaws.services.s3.AmazonS3Client.doesBucketExist(AmazonS3Client.java:1266) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.lambda$verifyBucketExists$1(S3AFileSystem.java:367) |
| at org.apache.hadoop.fs.s3a.Invoker.once(Invoker.java:109) |
| ... 27 more |
| |
| </pre></div></div> |
| </div> |
| <div class="section"> |
| <h3><a name="AccessDeniedException_All_access_to_this_object_has_been_disabled"></a><a name="access_denied_disabled"></a> <tt>AccessDeniedException</tt> All access to this object has been disabled</h3> |
| <p>Caller has no permission to access the bucket at all.</p> |
| |
| <div> |
| <div> |
| <pre class="source">doesBucketExist on fdsd: java.nio.file.AccessDeniedException: fdsd: doesBucketExist on fdsd: |
| com.amazonaws.services.s3.model.AmazonS3Exception: All access to this object has been disabled |
| (Service: Amazon S3; Status Code: 403; Error Code: AllAccessDisabled; Request ID: E6229D7F8134E64F; |
| S3 Extended Request ID: 6SzVz2t4qa8J2Wxo/oc8yBuB13Mgrn9uMKnxVY0hsBd2kU/YdHzW1IaujpJdDXRDCQRX3f1RYn0=), |
| S3 Extended Request ID: 6SzVz2t4qa8J2Wxo/oc8yBuB13Mgrn9uMKnxVY0hsBd2kU/YdHzW1IaujpJdDXRDCQRX3f1RYn0=:AllAccessDisabled |
| All access to this object has been disabled (Service: Amazon S3; Status Code: 403; |
| at org.apache.hadoop.fs.s3a.S3AUtils.translateException(S3AUtils.java:205) |
| at org.apache.hadoop.fs.s3a.S3ALambda.once(S3ALambda.java:122) |
| at org.apache.hadoop.fs.s3a.S3ALambda.lambda$retry$2(S3ALambda.java:233) |
| at org.apache.hadoop.fs.s3a.S3ALambda.retryUntranslated(S3ALambda.java:288) |
| at org.apache.hadoop.fs.s3a.S3ALambda.retry(S3ALambda.java:228) |
| at org.apache.hadoop.fs.s3a.S3ALambda.retry(S3ALambda.java:203) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.verifyBucketExists(S3AFileSystem.java:357) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.initialize(S3AFileSystem.java:293) |
| at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:3288) |
| at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:123) |
| at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:3337) |
| at org.apache.hadoop.fs.FileSystem$Cache.getUnique(FileSystem.java:3311) |
| at org.apache.hadoop.fs.FileSystem.newInstance(FileSystem.java:529) |
| at org.apache.hadoop.fs.s3a.s3guard.S3GuardTool$BucketInfo.run(S3GuardTool.java:997) |
| at org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.run(S3GuardTool.java:309) |
| at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76) |
| at org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.run(S3GuardTool.java:1218) |
| at org.apache.hadoop.fs.s3a.s3guard.S3GuardTool.main(S3GuardTool.java:1227) |
| Caused by: com.amazonaws.services.s3.model.AmazonS3Exception: All access to this object has been disabled |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1638) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1303) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1055) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:743) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:717) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:699) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:667) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:649) |
| at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:513) |
| at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4229) |
| at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4176) |
| at com.amazonaws.services.s3.AmazonS3Client.getAcl(AmazonS3Client.java:3381) |
| at com.amazonaws.services.s3.AmazonS3Client.getBucketAcl(AmazonS3Client.java:1160) |
| at com.amazonaws.services.s3.AmazonS3Client.getBucketAcl(AmazonS3Client.java:1150) |
| at com.amazonaws.services.s3.AmazonS3Client.doesBucketExist(AmazonS3Client.java:1266) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.lambda$verifyBucketExists$1(S3AFileSystem.java:360) |
| at org.apache.hadoop.fs.s3a.S3ALambda.once(S3ALambda.java:120) |
| </pre></div></div> |
| |
| <p>Check the name of the bucket is correct, and validate permissions for the active user/role.</p></div> |
| <div class="section"> |
| <h3><a name="AccessDeniedException_.E2.80.9CAccess_denied.E2.80.9D_when_trying_to_manipulate_data"></a><a name="access_denied_writing"></a> <tt>AccessDeniedException</tt> “Access denied” when trying to manipulate data</h3> |
| <p>Data can be read, but attempts to write data or manipulate the store fail with 403/Access denied.</p> |
| <p>The bucket may have an access policy which the request does not comply with. or the caller does not have the right to access the data.</p> |
| |
| <div> |
| <div> |
| <pre class="source">java.nio.file.AccessDeniedException: test/: PUT 0-byte object on test/: |
| com.amazonaws.services.s3.model.AmazonS3Exception: Access Denied (Service: Amazon S3; Status Code: 403; |
| Error Code: AccessDenied; Request ID: EDC662AD2EEEA33C; |
| at org.apache.hadoop.fs.s3a.S3AUtils.translateException(S3AUtils.java:210) |
| at org.apache.hadoop.fs.s3a.Invoker.once(Invoker.java:110) |
| at org.apache.hadoop.fs.s3a.Invoker.lambda$retry$3(Invoker.java:259) |
| at org.apache.hadoop.fs.s3a.Invoker.retryUntranslated(Invoker.java:313) |
| at org.apache.hadoop.fs.s3a.Invoker.retry(Invoker.java:255) |
| at org.apache.hadoop.fs.s3a.Invoker.retry(Invoker.java:230) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.createEmptyObject(S3AFileSystem.java:2691) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.createFakeDirectory(S3AFileSystem.java:2666) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.innerMkdirs(S3AFileSystem.java:2030) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.mkdirs(S3AFileSystem.java:1965) |
| at org.apache.hadoop.fs.FileSystem.mkdirs(FileSystem.java:2305) |
| </pre></div></div> |
| |
| <p>In the AWS S3 management console, select the “permissions” tab for the bucket, then “bucket policy”.</p> |
| <p>If there is a bucket access policy, e.g. required encryption headers, then the settings of the s3a client must guarantee the relevant headers are set (e.g. the encryption options match). Note: S3 Default Encryption options are not considered here: if the bucket policy requires AES256 as the encryption policy on PUT requests, then the encryption option must be set in the hadoop client so that the header is set.</p> |
| <p>Otherwise, the problem will likely be that the user does not have full access to the operation. Check what they were trying to (read vs write) and then look at the permissions of the user/role.</p> |
| <p>If the client using <a href="assumed_roles.html">assumed roles</a>, and a policy is set in <tt>fs.s3a.assumed.role.policy</tt>, then that policy declares <i>all</i> the rights which the caller has.</p></div> |
| <div class="section"> |
| <h3><a name="AccessDeniedException_in_rename.2C_.E2.80.9CMultiObjectDeleteException:_One_or_more_objects_could_not_be_deleted.E2.80.9D"></a><a name="access_denied_renaming"></a> <tt>AccessDeniedException</tt> in rename, “MultiObjectDeleteException: One or more objects could not be deleted”</h3> |
| |
| <div> |
| <div> |
| <pre class="source">mv: rename s3a://london/dest to s3a://london/src on |
| s3a://london/dest: |
| com.amazonaws.services.s3.model.MultiObjectDeleteException: One or more objects |
| could not be deleted (Service: null; Status Code: 200; Error Code: null; Request |
| ID: 5C9018EF245F02C5; S3 Extended Request ID: |
| 5fQ2RVCPF0rdvADRv2XY3U4yb2J0gHRID/4jm1eqCXp7RxpU0dH9DliChYsCUD1aVCFtbwfWJWY=), |
| S3 Extended Request ID: |
| 5fQ2RVCPF0rdvADRv2XY3U4yb2J0gHRID/4jm1eqCXp7RxpU0dH9DliChYsCUD1aVCFtbwfWJWY=:null: |
| AccessDenied: dest/file10: Access Denied |
| </pre></div></div> |
| |
| <p>The S3A connector’s emulation of file and directory rename is implemented by copying each file, then deleting the originals. This delete process is done in batches, by default in a single “multiple object delete request”. If one or more of the objects listed in the request cannot be deleted, an error is returned in S3 listing which objects were not deleted. If the cause was “access denied”, it is translated into an <tt>AccessDeniedException</tt>.</p> |
| <p>The rename is halted at this point: files may be present in both the source and destination directories. Those files which could not be deleted from the source directory will also have been copied into the destination directory. Files which were successfully deleted from the source directory will <i>only</i> be in the destination. And files for which the rename operation had yet to commence -they will only be in the source tree.</p> |
| <p>The user has to recover from this themselves. Be assured: no data will have been deleted, it is just that the data may now be scattered across two directories. Note: this is one reason why any application which tries to atomically commit work via rename (classic Hadoop output committers, distcp with the <tt>-atomic</tt> option) are not safe to use with S3. It is not a file system.</p> |
| <p>For an ‘AccessDenied’ failure, the root cause is IAM permissions. The user/role/bucket must have the permission <tt>s3:DeleteObject</tt> on the source path. It is safest to grant <tt>s3:Delete*</tt> so that if a future version of the S3A connector supported extra operations (explicit deletion of versioned files, get/set/delete object tagging, …), the client will have the permission to use them.</p></div> |
| <div class="section"> |
| <h3><a name="AccessDeniedException_when_using_SSE-KMS"></a><a name="kms_access_denied"></a> <tt>AccessDeniedException</tt> when using SSE-KMS</h3> |
| <p>When trying to write or read SEE-KMS-encrypted data, the client gets a <tt>java.nio.AccessDeniedException</tt> with the error 403/Forbidden.</p> |
| <p>The caller does not have the permissions to access the key with which the data was encrypted.</p></div> |
| <div class="section"> |
| <h3><a name="a.E2.80.9CUnable_to_find_a_region_via_the_region_provider_chain..E2.80.9D_when_using_session_credentials."></a><a name="no_region_session_credentials"></a> “Unable to find a region via the region provider chain.” when using session credentials.</h3> |
| <p>Region must be provided when requesting session credentials, or an exception will be thrown with the message:</p> |
| |
| <div> |
| <div> |
| <pre class="source">com.amazonaws.SdkClientException: Unable to find a region via the region provider |
| chain. Must provide an explicit region in the builder or setup environment to supply a region. |
| </pre></div></div> |
| |
| <p>In this case you have to set the <tt>fs.s3a.assumed.role.sts.endpoint</tt> property to a valid S3 sts endpoint and region like the following:</p> |
| |
| <div> |
| <div> |
| <pre class="source"><property> |
| <name>fs.s3a.assumed.role.sts.endpoint</name> |
| <value>${sts.endpoint}</value> |
| </property> |
| <property> |
| <name>fs.s3a.assumed.role.sts.endpoint.region</name> |
| <value>${sts.region}</value> |
| </property> |
| </pre></div></div> |
| </div></div> |
| <div class="section"> |
| <h2><a name="Connectivity_Problems"></a><a name="connectivity"></a> Connectivity Problems</h2> |
| <div class="section"> |
| <h3><a name="Error_message_.E2.80.9CThe_bucket_you_are_attempting_to_access_must_be_addressed_using_the_specified_endpoint.E2.80.9D"></a><a name="bad_endpoint"></a> Error message “The bucket you are attempting to access must be addressed using the specified endpoint”</h3> |
| <p>This surfaces when <tt>fs.s3a.endpoint</tt> is configured to use an S3 service endpoint which is neither the original AWS one, <tt>s3.amazonaws.com</tt> , nor the one where the bucket is hosted. The error message contains the redirect target returned by S3, which can be used to determine the correct value for <tt>fs.s3a.endpoint</tt>.</p> |
| |
| <div> |
| <div> |
| <pre class="source">org.apache.hadoop.fs.s3a.AWSS3IOException: Received permanent redirect response |
| to bucket.s3-us-west-2.amazonaws.com. This likely indicates that the S3 |
| endpoint configured in fs.s3a.endpoint does not match the AWS region |
| containing the bucket.: The bucket you are attempting to access must be |
| addressed using the specified endpoint. Please send all future requests to |
| this endpoint. (Service: Amazon S3; Status Code: 301; |
| Error Code: PermanentRedirect; Request ID: 7D39EC1021C61B11) |
| at org.apache.hadoop.fs.s3a.S3AUtils.translateException(S3AUtils.java:132) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.initMultipartUploads(S3AFileSystem.java:287) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.initialize(S3AFileSystem.java:203) |
| at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2895) |
| at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:102) |
| at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2932) |
| at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2914) |
| at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:390) |
| </pre></div></div> |
| |
| <ol style="list-style-type: decimal"> |
| |
| <li>Use the <a class="externalLink" href="http://docs.aws.amazon.com/general/latest/gr/rande.html#s3_region">Specific endpoint of the bucket’s S3 service</a></li> |
| <li>If not using “V4” authentication (see above), the original S3 endpoint can be used:</li> |
| </ol> |
| |
| <div> |
| <div> |
| <pre class="source"><property> |
| <name>fs.s3a.endpoint</name> |
| <value>s3.amazonaws.com</value> |
| </property> |
| </pre></div></div> |
| |
| <p>Using the explicit endpoint for the region is recommended for speed and to use the V4 signing API.</p></div> |
| <div class="section"> |
| <h3><a name="a.E2.80.9CTimeout_waiting_for_connection_from_pool.E2.80.9D_when_writing_data"></a><a name="timeout_from_pool"></a> “Timeout waiting for connection from pool” when writing data</h3> |
| <p>This happens when using the output stream thread pool runs out of capacity.</p> |
| |
| <div> |
| <div> |
| <pre class="source">[s3a-transfer-shared-pool1-t20] INFO http.AmazonHttpClient (AmazonHttpClient.java:executeHelper(496)) |
| - Unable to execute HTTP request: |
| Timeout waiting for connection from poolorg.apache.http.conn.ConnectionPoolTimeoutException: |
| Timeout waiting for connection from pool |
| at org.apache.http.impl.conn.PoolingClientConnectionManager.leaseConnection(PoolingClientConnectionManager.java:230) |
| at org.apache.http.impl.conn.PoolingClientConnectionManager$1.getConnection(PoolingClientConnectionManager.java:199) |
| at sun.reflect.GeneratedMethodAccessor13.invoke(Unknown Source) |
| at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) |
| at java.lang.reflect.Method.invoke(Method.java:498) |
| at com.amazonaws.http.conn.ClientConnectionRequestFactory$Handler.invoke(ClientConnectionRequestFactory.java:70) |
| at com.amazonaws.http.conn.$Proxy10.getConnection(Unknown Source) |
| at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:424) |
| at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:884) |
| at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82) |
| at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:55) |
| at com.amazonaws.http.AmazonHttpClient.executeOneRequest(AmazonHttpClient.java:728) |
| at com.amazonaws.http.AmazonHttpClient.executeHelper(AmazonHttpClient.java:489) |
| at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:310) |
| at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:3785) |
| at com.amazonaws.services.s3.AmazonS3Client.doUploadPart(AmazonS3Client.java:2921) |
| at com.amazonaws.services.s3.AmazonS3Client.uploadPart(AmazonS3Client.java:2906) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.uploadPart(S3AFileSystem.java:1025) |
| at org.apache.hadoop.fs.s3a.S3ABlockOutputStream$MultiPartUpload$1.call(S3ABlockOutputStream.java:360) |
| at org.apache.hadoop.fs.s3a.S3ABlockOutputStream$MultiPartUpload$1.call(S3ABlockOutputStream.java:355) |
| at org.apache.hadoop.fs.s3a.BlockingThreadPoolExecutorService$CallableWithPermitRelease.call(BlockingThreadPoolExecutorService.java:239) |
| at java.util.concurrent.FutureTask.run(FutureTask.java:266) |
| at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) |
| at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) |
| at java.lang.Thread.run(Thread.java:745) |
| </pre></div></div> |
| |
| <p>Make sure that <tt>fs.s3a.connection.maximum</tt> is at least larger than <tt>fs.s3a.threads.max</tt>.</p> |
| |
| <div> |
| <div> |
| <pre class="source"><property> |
| <name>fs.s3a.threads.max</name> |
| <value>20</value> |
| </property> |
| |
| <property> |
| <name>fs.s3a.connection.maximum</name> |
| <value>30</value> |
| </property> |
| </pre></div></div> |
| </div> |
| <div class="section"> |
| <h3><a name="a.E2.80.9CTimeout_waiting_for_connection_from_pool.E2.80.9D_when_reading_data"></a>“Timeout waiting for connection from pool” when reading data</h3> |
| <p>This happens when more threads are trying to read from an S3A system than the maximum number of allocated HTTP connections.</p> |
| <p>Set <tt>fs.s3a.connection.maximum</tt> to a larger value (and at least as large as <tt>fs.s3a.threads.max</tt>)</p></div> |
| <div class="section"> |
| <h3><a name="NoHttpResponseException"></a><tt>NoHttpResponseException</tt></h3> |
| <p>The HTTP Server did not respond.</p> |
| |
| <div> |
| <div> |
| <pre class="source">2017-02-07 10:01:07,950 INFO [s3a-transfer-shared-pool1-t7] com.amazonaws.http.AmazonHttpClient: |
| Unable to execute HTTP request: bucket.s3.amazonaws.com:443 failed to respond |
| org.apache.http.NoHttpResponseException: bucket.s3.amazonaws.com:443 failed to respond |
| at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:143) |
| at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:57) |
| at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:261) |
| at org.apache.http.impl.AbstractHttpClientConnection.receiveResponseHeader(AbstractHttpClientConnection.java:283) |
| at org.apache.http.impl.conn.DefaultClientConnection.receiveResponseHeader(DefaultClientConnection.java:259) |
| at org.apache.http.impl.conn.ManagedClientConnectionImpl.receiveResponseHeader(ManagedClientConnectionImpl.java:209) |
| at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:272) |
| at com.amazonaws.http.protocol.SdkHttpRequestExecutor.doReceiveResponse(SdkHttpRequestExecutor.java:66) |
| at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:124) |
| at org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:686) |
| at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:488) |
| at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:884) |
| at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82) |
| at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:55) |
| at com.amazonaws.http.AmazonHttpClient.executeOneRequest(AmazonHttpClient.java:728) |
| at com.amazonaws.http.AmazonHttpClient.executeHelper(AmazonHttpClient.java:489) |
| at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:310) |
| at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:3785) |
| at com.amazonaws.services.s3.AmazonS3Client.copyPart(AmazonS3Client.java:1731) |
| at com.amazonaws.services.s3.transfer.internal.CopyPartCallable.call(CopyPartCallable.java:41) |
| at com.amazonaws.services.s3.transfer.internal.CopyPartCallable.call(CopyPartCallable.java:28) |
| at org.apache.hadoop.fs.s3a.SemaphoredDelegatingExecutor$CallableWithPermitRelease.call(SemaphoredDelegatingExecutor.java:222) |
| at java.util.concurrent.FutureTask.run(FutureTask.java:266) |
| at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) |
| at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) |
| at java.lang.Thread.run(Thread.java:745) |
| </pre></div></div> |
| |
| <p>Probably network problems, unless it really is an outage of S3.</p></div> |
| <div class="section"> |
| <h3><a name="Out_of_heap_memory_when_writing_with_via_Fast_Upload"></a>Out of heap memory when writing with via Fast Upload</h3> |
| <p>This can happen when using the upload buffering mechanism uses memory (either <tt>fs.s3a.fast.upload.buffer=array</tt> or <tt>fs.s3a.fast.upload.buffer=bytebuffer</tt>).</p> |
| <p>More data is being generated than in the JVM than it can upload to S3 —and so much data has been buffered that the JVM has run out of memory.</p> |
| <ol style="list-style-type: decimal"> |
| |
| <li> |
| |
| <p>Consult <a href="./index.html#fast_upload_thread_tuning">S3A Fast Upload Thread Tuning</a> for detail on this issue and options to address it.</p> |
| </li> |
| <li> |
| |
| <p>Switch to buffering to disk, rather than memory.</p> |
| </li> |
| </ol> |
| <p>This surfaces if, while a multipart upload was taking place, all outstanding multipart uploads were garbage collected. The upload operation cannot complete because the data uploaded has been deleted.</p> |
| <p>Consult <a href="./index.html#multipart_purge">Cleaning up After Incremental Upload Failures</a> for details on how the multipart purge timeout can be set. If multipart uploads are failing with the message above, it may be a sign that this value is too low.</p></div> |
| <div class="section"> |
| <h3><a name="MultiObjectDeleteException_during_delete_or_rename_of_files"></a><tt>MultiObjectDeleteException</tt> during delete or rename of files</h3> |
| |
| <div> |
| <div> |
| <pre class="source">Exception in thread "main" com.amazonaws.services.s3.model.MultiObjectDeleteException: |
| Status Code: 0, AWS Service: null, AWS Request ID: null, AWS Error Code: null, |
| AWS Error Message: One or more objects could not be deleted, S3 Extended Request ID: null |
| at com.amazonaws.services.s3.AmazonS3Client.deleteObjects(AmazonS3Client.java:1745) |
| </pre></div></div> |
| |
| <p>This happens when trying to delete multiple objects, and one of the objects could not be deleted. It <i>should not occur</i> just because the object is missing. More specifically: at the time this document was written, we could not create such a failure.</p> |
| <p>It will occur if the caller lacks the permission to delete any of the objects.</p> |
| <p>Consult the log to see the specifics of which objects could not be deleted. Do you have permission to do so?</p> |
| <p>If this operation is failing for reasons other than the caller lacking permissions:</p> |
| <ol style="list-style-type: decimal"> |
| |
| <li>Try setting <tt>fs.s3a.multiobjectdelete.enable</tt> to <tt>false</tt>.</li> |
| <li>Consult <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-11572">HADOOP-11572</a> for up to date advice.</li> |
| </ol></div> |
| <div class="section"> |
| <h3><a name="a.E2.80.9CFailed_to_Sanitize_XML_document.E2.80.9D"></a>“Failed to Sanitize XML document”</h3> |
| |
| <div> |
| <div> |
| <pre class="source">org.apache.hadoop.fs.s3a.AWSClientIOException: getFileStatus on test/testname/streaming/: |
| com.amazonaws.AmazonClientException: Failed to sanitize XML document |
| destined for handler class com.amazonaws.services.s3.model.transform.XmlResponsesSaxParser$ListBucketHandler: |
| Failed to sanitize XML document destined for handler class |
| com.amazonaws.services.s3.model.transform.XmlResponsesSaxParser$ListBucketHandler |
| at org.apache.hadoop.fs.s3a.S3AUtils.translateException(S3AUtils.java:105) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.getFileStatus(S3AFileSystem.java:1462) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.innerListStatus(S3AFileSystem.java:1227) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.listStatus(S3AFileSystem.java:1203) |
| at org.apache.hadoop.fs.s3a.S3AGlobber.listStatus(S3AGlobber.java:69) |
| at org.apache.hadoop.fs.s3a.S3AGlobber.doGlob(S3AGlobber.java:210) |
| at org.apache.hadoop.fs.s3a.S3AGlobber.glob(S3AGlobber.java:125) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.globStatus(S3AFileSystem.java:1853) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.globStatus(S3AFileSystem.java:1841) |
| </pre></div></div> |
| |
| <p>We believe this is caused by the connection to S3 being broken. See <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-13811">HADOOP-13811</a>.</p> |
| <p>It may go away if the operation is retried.</p></div> |
| <div class="section"> |
| <h3><a name="JSON_Parse_Error_from_AWS_SDK"></a>JSON Parse Error from AWS SDK</h3> |
| <p>Sometimes a JSON Parse error is reported with the stack trace in the <tt>com.amazonaws</tt>,</p> |
| <p>Again, we believe this is caused by the connection to S3 being broken.</p> |
| <p>It may go away if the operation is retried.</p></div></div> |
| <div class="section"> |
| <h2><a name="Other_Errors"></a><a name="other"></a> Other Errors</h2> |
| <div class="section"> |
| <h3><a name="SdkClientException_Unable_to_verify_integrity_of_data_upload"></a><a name="integrity"></a> <tt>SdkClientException</tt> Unable to verify integrity of data upload</h3> |
| <p>Something has happened to the data as it was uploaded.</p> |
| |
| <div> |
| <div> |
| <pre class="source">Caused by: org.apache.hadoop.fs.s3a.AWSClientIOException: saving output on dest/_task_tmp.-ext-10000/_tmp.000000_0: |
| com.amazonaws.AmazonClientException: Unable to verify integrity of data upload. |
| Client calculated content hash (contentMD5: L75PalQk0CIhTp04MStVOA== in base 64) |
| didn't match hash (etag: 37ace01f2c383d6b9b3490933c83bb0f in hex) calculated by Amazon S3. |
| You may need to delete the data stored in Amazon S3. |
| (metadata.contentMD5: L75PalQk0CIhTp04MStVOA==, md5DigestStream: null, |
| bucketName: ext2, key: dest/_task_tmp.-ext-10000/_tmp.000000_0): |
| at org.apache.hadoop.fs.s3a.S3AUtils.translateException(S3AUtils.java:144) |
| at org.apache.hadoop.fs.s3a.S3AOutputStream.close(S3AOutputStream.java:121) |
| at org.apache.hadoop.fs.FSDataOutputStream$PositionCache.close(FSDataOutputStream.java:72) |
| at org.apache.hadoop.fs.FSDataOutputStream.close(FSDataOutputStream.java:106) |
| at org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat$1.close(HiveIgnoreKeyTextOutputFormat.java:99) |
| at org.apache.hadoop.hive.ql.exec.FileSinkOperator$FSPaths.closeWriters(FileSinkOperator.java:190) |
| ... 22 more |
| Caused by: com.amazonaws.AmazonClientException: Unable to verify integrity of data upload. |
| Client calculated content hash (contentMD5: L75PalQk0CIhTp04MStVOA== in base 64) |
| didn't match hash (etag: 37ace01f2c383d6b9b3490933c83bb0f in hex) calculated by Amazon S3. |
| You may need to delete the data stored in Amazon S3. |
| (metadata.contentMD5: L75PalQk0CIhTp04MStVOA==, md5DigestStream: null, |
| bucketName: ext2, key: dest/_task_tmp.-ext-10000/_tmp.000000_0) |
| at com.amazonaws.services.s3.AmazonS3Client.putObject(AmazonS3Client.java:1492) |
| at com.amazonaws.services.s3.transfer.internal.UploadCallable.uploadInOneChunk(UploadCallable.java:131) |
| at com.amazonaws.services.s3.transfer.internal.UploadCallable.call(UploadCallable.java:123) |
| at com.amazonaws.services.s3.transfer.internal.UploadMonitor.call(UploadMonitor.java:139) |
| at com.amazonaws.services.s3.transfer.internal.UploadMonitor.call(UploadMonitor.java:47) |
| ... 4 more |
| </pre></div></div> |
| |
| <p>As it uploads data to S3, the AWS SDK builds up an MD5 checksum of what was PUT/POSTed. When S3 returns the checksum of the uploaded data, that is compared with the local checksum. If there is a mismatch, this error is reported.</p> |
| <p>The uploaded data is already on S3 and will stay there, though if this happens during a multipart upload, it may not be visible (but still billed: clean up your multipart uploads via the <tt>hadoop s3guard uploads</tt> command).</p> |
| <p>Possible causes for this</p> |
| <ol style="list-style-type: decimal"> |
| |
| <li>A (possibly transient) network problem, including hardware faults.</li> |
| <li>A proxy server is doing bad things to the data.</li> |
| <li>Some signing problem, especially with third-party S3-compatible object stores.</li> |
| </ol> |
| <p>This is a very, very rare occurrence.</p> |
| <p>If the problem is a signing one, try changing the signature algorithm.</p> |
| |
| <div> |
| <div> |
| <pre class="source"><property> |
| <name>fs.s3a.signing-algorithm</name> |
| <value>S3SignerType</value> |
| </property> |
| </pre></div></div> |
| |
| <p>We cannot make any promises that it will work, only that it has been known to make the problem go away “once”</p></div> |
| <div class="section"> |
| <h3><a name="AWSS3IOException_The_Content-MD5_you_specified_did_not_match_what_we_received"></a><tt>AWSS3IOException</tt> The Content-MD5 you specified did not match what we received</h3> |
| <p>Reads work, but writes, even <tt>mkdir</tt>, fail:</p> |
| |
| <div> |
| <div> |
| <pre class="source">org.apache.hadoop.fs.s3a.AWSS3IOException: copyFromLocalFile(file:/tmp/hello.txt, s3a://bucket/hello.txt) |
| on file:/tmp/hello.txt: |
| The Content-MD5 you specified did not match what we received. |
| (Service: Amazon S3; Status Code: 400; Error Code: BadDigest; Request ID: 4018131225), |
| S3 Extended Request ID: null |
| at org.apache.hadoop.fs.s3a.S3AUtils.translateException(S3AUtils.java:127) |
| at org.apache.hadoop.fs.s3a.S3AUtils.translateException(S3AUtils.java:69) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.copyFromLocalFile(S3AFileSystem.java:1494) |
| at org.apache.hadoop.tools.cloudup.Cloudup.uploadOneFile(Cloudup.java:466) |
| at org.apache.hadoop.tools.cloudup.Cloudup.access$000(Cloudup.java:63) |
| at org.apache.hadoop.tools.cloudup.Cloudup$1.call(Cloudup.java:353) |
| at org.apache.hadoop.tools.cloudup.Cloudup$1.call(Cloudup.java:350) |
| at java.util.concurrent.FutureTask.run(FutureTask.java:266) |
| at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) |
| at java.util.concurrent.FutureTask.run(FutureTask.java:266) |
| at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) |
| at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) |
| at java.lang.Thread.run(Thread.java:748) |
| Caused by: com.amazonaws.services.s3.model.AmazonS3Exception: |
| The Content-MD5 you specified did not match what we received. |
| (Service: Amazon S3; Status Code: 400; Error Code: BadDigest; Request ID: 4018131225), |
| S3 Extended Request ID: null |
| at com.amazonaws.http.AmazonHttpClient.handleErrorResponse(AmazonHttpClient.java:1307) |
| at com.amazonaws.http.AmazonHttpClient.executeOneRequest(AmazonHttpClient.java:894) |
| at com.amazonaws.http.AmazonHttpClient.executeHelper(AmazonHttpClient.java:597) |
| at com.amazonaws.http.AmazonHttpClient.doExecute(AmazonHttpClient.java:363) |
| at com.amazonaws.http.AmazonHttpClient.executeWithTimer(AmazonHttpClient.java:329) |
| at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:308) |
| at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:3659) |
| at com.amazonaws.services.s3.AmazonS3Client.putObject(AmazonS3Client.java:1422) |
| at com.amazonaws.services.s3.transfer.internal.UploadCallable.uploadInOneChunk(UploadCallable.java:131) |
| at com.amazonaws.services.s3.transfer.internal.UploadCallable.call(UploadCallable.java:123) |
| at com.amazonaws.services.s3.transfer.internal.UploadMonitor.call(UploadMonitor.java:139) |
| at com.amazonaws.services.s3.transfer.internal.UploadMonitor.call(UploadMonitor.java:47) |
| at org.apache.hadoop.fs.s3a.BlockingThreadPoolExecutorService$CallableWithPermitRelease.call(BlockingThreadPoolExecutorService.java:239) |
| ... 4 more |
| </pre></div></div> |
| |
| <p>This stack trace was seen when interacting with a third-party S3 store whose expectations of headers related to the AWS V4 signing mechanism was not compatible with that of the specific AWS SDK Hadoop was using.</p> |
| <p>Workaround: revert to V2 signing.</p> |
| |
| <div> |
| <div> |
| <pre class="source"><property> |
| <name>fs.s3a.signing-algorithm</name> |
| <value>S3SignerType</value> |
| </property> |
| </pre></div></div> |
| </div> |
| <div class="section"> |
| <h3><a name="When_writing_data:_.E2.80.9Cjava.io.FileNotFoundException:_Completing_multi-part_upload.E2.80.9D"></a>When writing data: “java.io.FileNotFoundException: Completing multi-part upload”</h3> |
| <p>A multipart upload was trying to complete, but failed as there was no upload with that ID.</p> |
| |
| <div> |
| <div> |
| <pre class="source">java.io.FileNotFoundException: Completing multi-part upload on fork-5/test/multipart/1c397ca6-9dfb-4ac1-9cf7-db666673246b: |
| com.amazonaws.services.s3.model.AmazonS3Exception: The specified upload does not exist. |
| The upload ID may be invalid, or the upload may have been aborted or completed. |
| (Service: Amazon S3; Status Code: 404; Error Code: NoSuchUpload; |
| at com.amazonaws.http.AmazonHttpClient.handleErrorResponse(AmazonHttpClient.java:1182) |
| at com.amazonaws.http.AmazonHttpClient.executeOneRequest(AmazonHttpClient.java:770) |
| at com.amazonaws.http.AmazonHttpClient.executeHelper(AmazonHttpClient.java:489) |
| at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:310) |
| at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:3785) |
| at com.amazonaws.services.s3.AmazonS3Client.completeMultipartUpload(AmazonS3Client.java:2705) |
| at org.apache.hadoop.fs.s3a.S3ABlockOutputStream$MultiPartUpload.complete(S3ABlockOutputStream.java:473) |
| at org.apache.hadoop.fs.s3a.S3ABlockOutputStream$MultiPartUpload.access$200(S3ABlockOutputStream.java:382) |
| at org.apache.hadoop.fs.s3a.S3ABlockOutputStream.close(S3ABlockOutputStream.java:272) |
| at org.apache.hadoop.fs.FSDataOutputStream$PositionCache.close(FSDataOutputStream.java:72) |
| at org.apache.hadoop.fs.FSDataOutputStream.close(FSDataOutputStream.java:106) |
| </pre></div></div> |
| |
| <p>This can happen when all outstanding uploads have been aborted, including the active ones.</p> |
| <p>If the bucket has a lifecycle policy of deleting multipart uploads, make sure that the expiry time of the deletion is greater than that required for all open writes to complete the write, <i>and for all jobs using the S3A committers to commit their work.</i></p></div> |
| <div class="section"> |
| <h3><a name="Application_hangs_after_reading_a_number_of_files"></a>Application hangs after reading a number of files</h3> |
| <p>The pool of https client connections and/or IO threads have been used up, and none are being freed.</p> |
| <ol style="list-style-type: decimal"> |
| |
| <li>The pools aren’t big enough. See <a href="#timeout_from_pool">“Timeout waiting for connection from pool”</a></li> |
| <li>Likely root cause: whatever code is reading files isn’t calling <tt>close()</tt> on the input streams. Make sure your code does this! And if it’s someone else’s: make sure you have a recent version; search their issue trackers to see if its a known/fixed problem. If not, it’s time to work with the developers, or come up with a workaround (i.e closing the input stream yourself).</li> |
| </ol></div> |
| <div class="section"> |
| <h3><a name="Issue:_when_writing_data.2C_HTTP_Exceptions_logged_at_info_from_AmazonHttpClient"></a>Issue: when writing data, HTTP Exceptions logged at info from <tt>AmazonHttpClient</tt></h3> |
| |
| <div> |
| <div> |
| <pre class="source">[s3a-transfer-shared-pool4-t6] INFO http.AmazonHttpClient (AmazonHttpClient.java:executeHelper(496)) |
| - Unable to execute HTTP request: hwdev-steve-ireland-new.s3.amazonaws.com:443 failed to respond |
| org.apache.http.NoHttpResponseException: bucket.s3.amazonaws.com:443 failed to respond |
| at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:143) |
| at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:57) |
| at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:261) |
| at org.apache.http.impl.AbstractHttpClientConnection.receiveResponseHeader(AbstractHttpClientConnection.java:283) |
| at org.apache.http.impl.conn.DefaultClientConnection.receiveResponseHeader(DefaultClientConnection.java:259) |
| at org.apache.http.impl.conn.ManagedClientConnectionImpl.receiveResponseHeader(ManagedClientConnectionImpl.java:209) |
| at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:272) |
| at com.amazonaws.http.protocol.SdkHttpRequestExecutor.doReceiveResponse(SdkHttpRequestExecutor.java:66) |
| at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:124) |
| at org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:686) |
| at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:488) |
| at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:884) |
| at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82) |
| at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:55) |
| at com.amazonaws.http.AmazonHttpClient.executeOneRequest(AmazonHttpClient.java:728) |
| at com.amazonaws.http.AmazonHttpClient.executeHelper(AmazonHttpClient.java:489) |
| at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:310) |
| at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:3785) |
| at com.amazonaws.services.s3.AmazonS3Client.copyPart(AmazonS3Client.java:1731) |
| at com.amazonaws.services.s3.transfer.internal.CopyPartCallable.call(CopyPartCallable.java:41) |
| at com.amazonaws.services.s3.transfer.internal.CopyPartCallable.call(CopyPartCallable.java:28) |
| at org.apache.hadoop.fs.s3a.BlockingThreadPoolExecutorService$CallableWithPermitRelease.call(BlockingThreadPoolExecutorService.java:239) |
| at java.util.concurrent.FutureTask.run(FutureTask.java:266) |
| at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) |
| at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) |
| at java.lang.Thread.run(Thread.java:745) |
| </pre></div></div> |
| |
| <p>These are HTTP I/O exceptions caught and logged inside the AWS SDK. The client will attempt to retry the operation; it may just be a transient event. If there are many such exceptions in logs, it may be a symptom of connectivity or network problems.</p></div> |
| <div class="section"> |
| <h3><a name="AWSBadRequestException_IllegalLocationConstraintException.2FThe_unspecified_location_constraint_is_incompatible"></a><tt>AWSBadRequestException</tt> IllegalLocationConstraintException/The unspecified location constraint is incompatible</h3> |
| |
| <div> |
| <div> |
| <pre class="source"> Cause: org.apache.hadoop.fs.s3a.AWSBadRequestException: put on : |
| com.amazonaws.services.s3.model.AmazonS3Exception: |
| The unspecified location constraint is incompatible for the region specific |
| endpoint this request was sent to. |
| (Service: Amazon S3; Status Code: 400; Error Code: IllegalLocationConstraintException; |
| |
| at org.apache.hadoop.fs.s3a.S3AUtils.translateException(S3AUtils.java:178) |
| at org.apache.hadoop.fs.s3a.S3ALambda.execute(S3ALambda.java:64) |
| at org.apache.hadoop.fs.s3a.WriteOperationHelper.uploadObject(WriteOperationHelper.java:451) |
| at org.apache.hadoop.fs.s3a.commit.magic.MagicCommitTracker.aboutToComplete(MagicCommitTracker.java:128) |
| at org.apache.hadoop.fs.s3a.S3ABlockOutputStream.close(S3ABlockOutputStream.java:373) |
| at org.apache.hadoop.fs.FSDataOutputStream$PositionCache.close(FSDataOutputStream.java:72) |
| at org.apache.hadoop.fs.FSDataOutputStream.close(FSDataOutputStream.java:101) |
| at org.apache.hadoop.hive.ql.io.orc.WriterImpl.close(WriterImpl.java:2429) |
| at org.apache.hadoop.hive.ql.io.orc.OrcOutputFormat$OrcRecordWriter.close(OrcOutputFormat.java:106) |
| at org.apache.hadoop.hive.ql.io.orc.OrcOutputFormat$OrcRecordWriter.close(OrcOutputFormat.java:91) |
| ... |
| Cause: com.amazonaws.services.s3.model.AmazonS3Exception: |
| The unspecified location constraint is incompatible for the region specific endpoint |
| this request was sent to. (Service: Amazon S3; Status Code: 400; Error Code: IllegalLocationConstraintException; |
| Request ID: EEBC5A08BCB3A645) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1588) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1258) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1030) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:742) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:716) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:699) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:667) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:649) |
| at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:513) |
| at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4221) |
| ... |
| </pre></div></div> |
| |
| <p>Something has been trying to write data to “/”.</p></div></div> |
| <div class="section"> |
| <h2><a name="File_System_Semantics"></a>File System Semantics</h2> |
| <p>These are the issues where S3 does not appear to behave the way a filesystem “should”.</p> |
| <div class="section"> |
| <h3><a name="File_not_visible.2Fsaved"></a>File not visible/saved</h3> |
| <p>The files in an object store are not visible until the write has been completed. In-progress writes are simply saved to a local file/cached in RAM and only uploaded. at the end of a write operation. If a process terminated unexpectedly, or failed to call the <tt>close()</tt> method on an output stream, the pending data will have been lost.</p></div> |
| <div class="section"> |
| <h3><a name="File_flush.28.29_calls_do_not_save_data_to_S3"></a>File <tt>flush()</tt> calls do not save data to S3</h3> |
| <p>Again, this is due to the fact that the data is cached locally until the <tt>close()</tt> operation. The S3A filesystem cannot be used as a store of data if it is required that the data is persisted durably after every <tt>Syncable.hflush()</tt> or <tt>Syncable.hsync()</tt> call. This includes resilient logging, HBase-style journaling and the like. The standard strategy here is to save to HDFS and then copy to S3.</p></div> |
| <div class="section"> |
| <h3><a name="UnsupportedOperationException_.E2.80.9CS3A_streams_are_not_Syncable._See_HADOOP-17597..E2.80.9D"></a><a name="syncable"></a> <tt>UnsupportedOperationException</tt> “S3A streams are not Syncable. See HADOOP-17597.”</h3> |
| <p>The application has tried to call either the <tt>Syncable.hsync()</tt> or <tt>Syncable.hflush()</tt> methods on an S3A output stream. This has been rejected because the connector isn’t saving any data at all. The <tt>Syncable</tt> API, especially the <tt>hsync()</tt> call, are critical for applications such as HBase to safely persist data.</p> |
| <p>The S3A connector throws an <tt>UnsupportedOperationException</tt> when these API calls are made, because the guarantees absolutely cannot be met: nothing is being flushed or saved.</p> |
| <ul> |
| |
| <li>Applications which intend to invoke the Syncable APIs call <tt>hasCapability("hsync")</tt> on the stream to see if they are supported.</li> |
| <li>Or catch and downgrade <tt>UnsupportedOperationException</tt>.</li> |
| </ul> |
| <p>These recommendations <i>apply to all filesystems</i>.</p> |
| <p>To downgrade the S3A connector to simply warning of the use of <tt>hsync()</tt> or <tt>hflush()</tt> calls, set the option <tt>fs.s3a.downgrade.syncable.exceptions</tt> to true.</p> |
| |
| <div> |
| <div> |
| <pre class="source"><property> |
| <name>fs.s3a.downgrade.syncable.exceptions</name> |
| <value>true</value> |
| </property> |
| </pre></div></div> |
| |
| <p>The count of invocations of the two APIs are collected in the S3A filesystem Statistics/IOStatistics and so their use can be monitored.</p></div> |
| <div class="section"> |
| <h3><a name="RemoteFileChangedException_and_read-during-overwrite"></a><tt>RemoteFileChangedException</tt> and read-during-overwrite</h3> |
| |
| <div> |
| <div> |
| <pre class="source">org.apache.hadoop.fs.s3a.RemoteFileChangedException: re-open `s3a://my-bucket/test/file.txt': |
| Change reported by S3 while reading at position 1949. |
| ETag f9c186d787d4de9657e99f280ba26555 was unavailable |
| at org.apache.hadoop.fs.s3a.impl.ChangeTracker.processResponse(ChangeTracker.java:137) |
| at org.apache.hadoop.fs.s3a.S3AInputStream.reopen(S3AInputStream.java:200) |
| at org.apache.hadoop.fs.s3a.S3AInputStream.lambda$lazySeek$1(S3AInputStream.java:346) |
| at org.apache.hadoop.fs.s3a.Invoker.lambda$retry$2(Invoker.java:195) |
| at org.apache.hadoop.fs.s3a.Invoker.once(Invoker.java:109) |
| at org.apache.hadoop.fs.s3a.Invoker.lambda$retry$3(Invoker.java:265) |
| at org.apache.hadoop.fs.s3a.Invoker.retryUntranslated(Invoker.java:322) |
| at org.apache.hadoop.fs.s3a.Invoker.retry(Invoker.java:261) |
| at org.apache.hadoop.fs.s3a.Invoker.retry(Invoker.java:193) |
| at org.apache.hadoop.fs.s3a.Invoker.retry(Invoker.java:215) |
| at org.apache.hadoop.fs.s3a.S3AInputStream.lazySeek(S3AInputStream.java:339) |
| at org.apache.hadoop.fs.s3a.S3AInputStream.read(S3AInputStream.java:372) |
| </pre></div></div> |
| |
| <p>If an S3 object is updated while an S3A filesystem reader has an open <tt>InputStream</tt> on it, the reader may encounter <tt>RemoteFileChangedException</tt>. This occurs if the S3A <tt>InputStream</tt> needs to re-open the object (e.g. during a seek()) and detects the change.</p> |
| <p>If the change detection mode is configured to ‘warn’, a warning like the following will be seen instead of <tt>RemoteFileChangedException</tt>:</p> |
| |
| <div> |
| <div> |
| <pre class="source">WARN - ETag change detected on re-open s3a://my-bucket/test/readFileToChange.txt at 1949. |
| Expected f9c186d787d4de9657e99f280ba26555 got 043abff21b7bd068d2d2f27ccca70309 |
| </pre></div></div> |
| |
| <p>Using a third-party S3 implementation that doesn’t support eTags might result in the following error.</p> |
| |
| <div> |
| <div> |
| <pre class="source">org.apache.hadoop.fs.s3a.NoVersionAttributeException: `s3a://my-bucket/test/file.txt': |
| Change detection policy requires ETag |
| at org.apache.hadoop.fs.s3a.impl.ChangeTracker.processResponse(ChangeTracker.java:153) |
| at org.apache.hadoop.fs.s3a.S3AInputStream.reopen(S3AInputStream.java:200) |
| at org.apache.hadoop.fs.s3a.S3AInputStream.lambda$lazySeek$1(S3AInputStream.java:346) |
| at org.apache.hadoop.fs.s3a.Invoker.lambda$retry$2(Invoker.java:195) |
| at org.apache.hadoop.fs.s3a.Invoker.once(Invoker.java:109) |
| at org.apache.hadoop.fs.s3a.Invoker.lambda$retry$3(Invoker.java:265) |
| at org.apache.hadoop.fs.s3a.Invoker.retryUntranslated(Invoker.java:322) |
| at org.apache.hadoop.fs.s3a.Invoker.retry(Invoker.java:261) |
| at org.apache.hadoop.fs.s3a.Invoker.retry(Invoker.java:193) |
| at org.apache.hadoop.fs.s3a.Invoker.retry(Invoker.java:215) |
| at org.apache.hadoop.fs.s3a.S3AInputStream.lazySeek(S3AInputStream.java:339) |
| at org.apache.hadoop.fs.s3a.S3AInputStream.read(S3AInputStream.java:372) |
| </pre></div></div> |
| |
| <p>If the change policy is <tt>versionid</tt> there are a number of possible causes</p> |
| <ul> |
| |
| <li>The bucket does not have object versioning enabled.</li> |
| <li>The bucket does have versioning enabled, but the object being read was created before versioning was enabled.</li> |
| <li>The bucket is on a third-party store which does not support object versioning.</li> |
| </ul> |
| <p>See <a href="./index.html#handling_read-during-overwrite">Handling Read-During-Overwrite</a> for more information.</p></div> |
| <div class="section"> |
| <h3><a name="RemoteFileChangedException:_.E2.80.9CFile_to_rename_not_found_on_guarded_S3_store_after_repeated_attempts.E2.80.9D"></a><tt>RemoteFileChangedException</tt>: “File to rename not found on guarded S3 store after repeated attempts”</h3> |
| <p>A file being renamed and listed in the S3Guard table could not be found in the S3 bucket even after multiple attempts.</p> |
| <p>Now that S3 is consistent, this is sign that the S3Guard table is out of sync with the S3 Data.</p> |
| <p>Fix: disable S3Guard: it is no longer needed.</p> |
| |
| <div> |
| <div> |
| <pre class="source">org.apache.hadoop.fs.s3a.RemoteFileChangedException: copyFile(/sourcedir/missing, /destdir/) |
| `s3a://example/sourcedir/missing': File not found on S3 after repeated attempts: `s3a://example/sourcedir/missing' |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.copyFile(S3AFileSystem.java:3231) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.access$700(S3AFileSystem.java:177) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem$RenameOperationCallbacksImpl.copyFile(S3AFileSystem.java:1368) |
| at org.apache.hadoop.fs.s3a.impl.RenameOperation.copySourceAndUpdateTracker(RenameOperation.java:448) |
| at org.apache.hadoop.fs.s3a.impl.RenameOperation.lambda$initiateCopy$0(RenameOperation.java:412) |
| </pre></div></div> |
| |
| <p>If error occurs and the file is on S3, consider increasing the value of <tt>fs.s3a.s3guard.consistency.retry.limit</tt>.</p> |
| <p>We also recommend using applications/application options which do not rename files when committing work or when copying data to S3, but instead write directly to the final destination.</p></div></div> |
| <div class="section"> |
| <h2><a name="Rename_not_behaving_as_.E2.80.9Cexpected.E2.80.9D"></a>Rename not behaving as “expected”</h2> |
| <p>S3 is not a filesystem. The S3A connector mimics file and directory rename by</p> |
| <ul> |
| |
| <li>HEAD then LIST of source path. The source MUST exist, else a <tt>FileNotFoundException</tt> is raised.</li> |
| <li>HEAD then LIST of the destination path. This SHOULD NOT exist. If it does and if the source is a directory, the destination MUST be an empty directory. If the source is a file, the destination MAY be a directory, empty or not. If the destination exists and relevant conditions are not met, a <tt>FileAlreadyExistsException</tt> is raised.</li> |
| <li>If the destination path does not exist, a HEAD request of the parent path to verify that there is no object there. Directory markers are not checked for, nor that the path has any children,</li> |
| <li>File-by-file copy of source objects to destination. Parallelized, with page listings of directory objects and issuing of DELETE requests.</li> |
| <li>Post-delete recreation of source parent directory marker, if needed.</li> |
| </ul> |
| <p>This is slow (<tt>O(data)</tt>) and can cause timeouts on code which is required to send regular progress reports/heartbeats -for example, distCp. It is <i>very unsafe</i> if the calling code expects atomic renaming as part of any commit algorithm. This is why the <a href="committers.md">S3A Committers</a> or similar are needed to safely commit output.</p> |
| <p>There is also the risk of race conditions arising if many processes/threads are working with the same directory tree <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-16721">HADOOP-16721</a>.</p> |
| <p>To reduce this risk, since Hadoop 3.3.1, the S3A connector no longer verifies the parent directory of the destination of a rename is a directory -only that it is <i>not</i> a file. You can rename a directory or file deep under a file if you try -after which there is no guarantee of the files being found in listings. Try not to do that.</p></div> |
| <div class="section"> |
| <h2><a name="S3_Server_Side_Encryption"></a><a name="encryption"></a> S3 Server Side Encryption</h2> |
| <div class="section"> |
| <h3><a name="AWSS3IOException_KMS.NotFoundException_.E2.80.9CInvalid_arn.E2.80.9D_when_using_SSE-KMS"></a><tt>AWSS3IOException</tt> <tt>KMS.NotFoundException</tt> “Invalid arn” when using SSE-KMS</h3> |
| <p>When performing file operations, the user may run into an issue where the KMS key arn is invalid.</p> |
| |
| <div> |
| <div> |
| <pre class="source">org.apache.hadoop.fs.s3a.AWSS3IOException: innerMkdirs on /test: |
| com.amazonaws.services.s3.model.AmazonS3Exception: |
| Invalid arn (Service: Amazon S3; Status Code: 400; Error Code: KMS.NotFoundException; |
| Request ID: CA89F276B3394565), |
| S3 Extended Request ID: ncz0LWn8zor1cUO2fQ7gc5eyqOk3YfyQLDn2OQNoe5Zj/GqDLggUYz9QY7JhdZHdBaDTh+TL5ZQ=: |
| Invalid arn (Service: Amazon S3; Status Code: 400; Error Code: KMS.NotFoundException; Request ID: CA89F276B3394565) |
| at org.apache.hadoop.fs.s3a.S3AUtils.translateException(S3AUtils.java:194) |
| at org.apache.hadoop.fs.s3a.S3AUtils.translateException(S3AUtils.java:117) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.mkdirs(S3AFileSystem.java:1541) |
| at org.apache.hadoop.fs.FileSystem.mkdirs(FileSystem.java:2230) |
| at org.apache.hadoop.fs.contract.AbstractFSContractTestBase.mkdirs(AbstractFSContractTestBase.java:338) |
| at org.apache.hadoop.fs.contract.AbstractFSContractTestBase.setup(AbstractFSContractTestBase.java:193) |
| at org.apache.hadoop.fs.s3a.scale.S3AScaleTestBase.setup(S3AScaleTestBase.java:90) |
| at org.apache.hadoop.fs.s3a.scale.AbstractSTestS3AHugeFiles.setup(AbstractSTestS3AHugeFiles.java:77) |
| at sun.reflect.GeneratedMethodAccessor12.invoke(Unknown Source) |
| at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) |
| at java.lang.reflect.Method.invoke(Method.java:498) |
| at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47) |
| at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) |
| at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44) |
| at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24) |
| at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27) |
| at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55) |
| at org.junit.internal.runners.statements.FailOnTimeout$StatementThread.run(FailOnTimeout.java:74) |
| Caused by: com.amazonaws.services.s3.model.AmazonS3Exception: |
| Invalid arn (Service: Amazon S3; Status Code: 400; Error Code: KMS.NotFoundException; Request ID: CA89F276B3394565) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1588) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1258) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1030) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:742) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:716) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:699) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:667) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:649) |
| at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:513) |
| at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4221) |
| at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4168) |
| at com.amazonaws.services.s3.AmazonS3Client.putObject(AmazonS3Client.java:1718) |
| at com.amazonaws.services.s3.transfer.internal.UploadCallable.uploadInOneChunk(UploadCallable.java:133) |
| at com.amazonaws.services.s3.transfer.internal.UploadCallable.call(UploadCallable.java:125) |
| at com.amazonaws.services.s3.transfer.internal.UploadMonitor.call(UploadMonitor.java:143) |
| at com.amazonaws.services.s3.transfer.internal.UploadMonitor.call(UploadMonitor.java:48) |
| at java.util.concurrent.FutureTask.run(FutureTask.java:266) |
| at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) |
| at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) |
| at java.lang.Thread.run(Thread.java:745) |
| </pre></div></div> |
| |
| <p>Possible causes:</p> |
| <ul> |
| |
| <li>the KMS key ARN is entered incorrectly, or</li> |
| <li>the KMS key referenced by the ARN is in a different region than the S3 bucket being used.</li> |
| </ul></div> |
| <div class="section"> |
| <h3><a name="Using_SSE-C_.E2.80.9CBad_Request.E2.80.9D"></a>Using SSE-C “Bad Request”</h3> |
| <p>When performing file operations the user may run into an unexpected 400/403 error such as</p> |
| |
| <div> |
| <div> |
| <pre class="source">org.apache.hadoop.fs.s3a.AWSS3IOException: getFileStatus on fork-4/: |
| com.amazonaws.services.s3.model.AmazonS3Exception: |
| Bad Request (Service: Amazon S3; Status Code: 400; |
| Error Code: 400 Bad Request; Request ID: 42F9A1987CB49A99), |
| S3 Extended Request ID: jU2kcwaXnWj5APB14Cgb1IKkc449gu2+dhIsW/+7x9J4D+VUkKvu78mBo03oh9jnOT2eoTLdECU=: |
| Bad Request (Service: Amazon S3; Status Code: 400; Error Code: 400 Bad Request; Request ID: 42F9A1987CB49A99) |
| </pre></div></div> |
| |
| <p>This can happen in the cases of not specifying the correct SSE-C encryption key. Such cases can be as follows: 1. An object is encrypted using SSE-C on S3 and either the wrong encryption type is used, no encryption is specified, or the SSE-C specified is incorrect. 2. A directory is encrypted with a SSE-C keyA and the user is trying to move a file using configured SSE-C keyB into that structure.</p></div></div> |
| <div class="section"> |
| <h2><a name="Message_appears_in_logs_.E2.80.9CNot_all_bytes_were_read_from_the_S3ObjectInputStream.E2.80.9D"></a><a name="not_all_bytes_were_read"></a> Message appears in logs “Not all bytes were read from the S3ObjectInputStream”</h2> |
| <p>This is a message which can be generated by the Amazon SDK when the client application calls <tt>abort()</tt> on the HTTP input stream, rather than reading to the end of the file/stream and causing <tt>close()</tt>. The S3A client does call <tt>abort()</tt> when seeking round large files, <a class="externalLink" href="https://github.com/aws/aws-sdk-java/issues/1211">so leading to the message</a>.</p> |
| <p>No ASF Hadoop releases have shipped with an SDK which prints this message when used by the S3A client. However third party and private builds of Hadoop may cause the message to be logged.</p> |
| <p>Ignore it. The S3A client does call <tt>abort()</tt>, but that’s because our benchmarking shows that it is generally more efficient to abort the TCP connection and initiate a new one than read to the end of a large file.</p> |
| <p>Note: the threshold when data is read rather than the stream aborted can be tuned by <tt>fs.s3a.readahead.range</tt>; seek policy in <tt>fs.s3a.experimental.input.fadvise</tt>.</p> |
| <div class="section"> |
| <h3><a name="PathIOException_Number_of_parts_in_multipart_upload_exceeded."></a><a name="upload_failure"></a> <tt>PathIOException</tt> Number of parts in multipart upload exceeded.</h3> |
| <p>Number of parts in multipart upload exceeded</p> |
| |
| <div> |
| <div> |
| <pre class="source">org.apache.hadoop.fs.PathIOException: `test/testMultiPartUploadFailure': Number of parts in multipart upload exceeded. Current part count = X, Part count limit = Y |
| |
| at org.apache.hadoop.fs.s3a.WriteOperationHelper.newUploadPartRequest(WriteOperationHelper.java:432) |
| at org.apache.hadoop.fs.s3a.S3ABlockOutputStream$MultiPartUpload.uploadBlockAsync(S3ABlockOutputStream.java:627) |
| at org.apache.hadoop.fs.s3a.S3ABlockOutputStream$MultiPartUpload.access$000(S3ABlockOutputStream.java:532) |
| at org.apache.hadoop.fs.s3a.S3ABlockOutputStream.uploadCurrentBlock(S3ABlockOutputStream.java:316) |
| at org.apache.hadoop.fs.s3a.S3ABlockOutputStream.write(S3ABlockOutputStream.java:301) |
| </pre></div></div> |
| |
| <p>This is a known issue where upload fails if number of parts is more than 10000 (specified by aws SDK). You can configure <tt>fs.s3a.multipart.size</tt> to reduce the number of parts.</p></div> |
| <div class="section"> |
| <h3><a name="UnknownStoreException_Bucket_does_not_exist."></a><a name="no_such_bucket"></a> <tt>UnknownStoreException</tt> Bucket does not exist.</h3> |
| <p>The bucket does not exist.</p> |
| |
| <div> |
| <div> |
| <pre class="source">org.apache.hadoop.fs.s3a.UnknownStoreException: |
| Bucket random-bucket-33013fb8-f7f7-4edb-9c26-16a6ed019184 does not exist |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.verifyBucketExists(S3AFileSystem.java:537) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.doBucketProbing(S3AFileSystem.java:471) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.initialize(S3AFileSystem.java:387) |
| at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:3422) |
| at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:502) |
| </pre></div></div> |
| |
| <p>Check the URI is correct, and that the bucket actually exists.</p> |
| <p>If using a third-party store, verify that you’ve configured the client to talk to the specific server in <tt>fs.s3a.endpoint</tt>. Forgetting to update this value and asking the AWS S3 endpoint for a bucket is not an unusual occurrence.</p> |
| <p>This can surface during filesystem API calls if the bucket is deleted while you are using it, -or the startup check for bucket existence has been disabled by setting <tt>fs.s3a.bucket.probe</tt> to 0.</p> |
| |
| <div> |
| <div> |
| <pre class="source">org.apache.hadoop.fs.s3a.UnknownStoreException: s3a://random-bucket-7d9217b0-b426-4344-82ea-25d6cbb316f1/ |
| |
| at org.apache.hadoop.fs.s3a.S3AUtils.translateException(S3AUtils.java:254) |
| at org.apache.hadoop.fs.s3a.S3AUtils.translateException(S3AUtils.java:167) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.innerListFiles(S3AFileSystem.java:4149) |
| at org.apache.hadoop.fs.s3a.S3AFileSystem.listFiles(S3AFileSystem.java:3983) |
| Caused by: com.amazonaws.services.s3.model.AmazonS3Exception: |
| The specified bucket does not exist |
| (Service: Amazon S3; Status Code: 404; Error Code: NoSuchBucket |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1712) |
| at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1367) |
| </pre></div></div> |
| </div></div> |
| <div class="section"> |
| <h2><a name="Other_Issues"></a>Other Issues</h2> |
| <div class="section"> |
| <h3><a name="Enabling_low-level_logging"></a><a name="logging"></a> Enabling low-level logging</h3> |
| <p>The AWS SDK and the Apache S3 components can be configured to log at more detail, as can S3A itself.</p> |
| |
| <div> |
| <div> |
| <pre class="source">log4j.logger.org.apache.hadoop.fs.s3a=DEBUG |
| log4j.logger.com.amazonaws.request=DEBUG |
| log4j.logger.com.amazonaws.thirdparty.apache.http=DEBUG |
| </pre></div></div> |
| |
| <p>If using the “unshaded” JAR, then the Apache HttpClient can be directly configured:</p> |
| |
| <div> |
| <div> |
| <pre class="source">log4j.logger.org.apache.http=DEBUG |
| </pre></div></div> |
| |
| <p>This produces a log such as this, which is for a V4-authenticated PUT of a 0-byte file used as an empty directory marker</p> |
| |
| <div> |
| <div> |
| <pre class="source">execchain.MainClientExec (MainClientExec.java:execute(255)) - Executing request PUT /test/ HTTP/1.1 |
| execchain.MainClientExec (MainClientExec.java:execute(266)) - Proxy auth state: UNCHALLENGED |
| http.headers (LoggingManagedHttpClientConnection.java:onRequestSubmitted(135)) - http-outgoing-0 >> PUT /test/ HTTP/1.1 |
| http.headers (LoggingManagedHttpClientConnection.java:onRequestSubmitted(138)) - http-outgoing-0 >> Host: ireland-new.s3-eu-west-1.amazonaws.com |
| http.headers (LoggingManagedHttpClientConnection.java:onRequestSubmitted(138)) - http-outgoing-0 >> x-amz-content-sha256: UNSIGNED-PAYLOAD |
| http.headers (LoggingManagedHttpClientConnection.java:onRequestSubmitted(138)) - http-outgoing-0 >> Authorization: AWS4-HMAC-SHA256 Credential=AKIAIYZ5JEEEER/20170904/eu-west-1/s3/aws4_request, ... |
| http.headers (LoggingManagedHttpClientConnection.java:onRequestSubmitted(138)) - http-outgoing-0 >> X-Amz-Date: 20170904T172929Z |
| http.headers (LoggingManagedHttpClientConnection.java:onRequestSubmitted(138)) - http-outgoing-0 >> User-Agent: Hadoop 3.0.0-beta-1, aws-sdk-java/1.11.134 ... |
| http.headers (LoggingManagedHttpClientConnection.java:onRequestSubmitted(138)) - http-outgoing-0 >> amz-sdk-invocation-id: 75b530f8-ad31-1ad3-13db-9bd53666b30d |
| http.headers (LoggingManagedHttpClientConnection.java:onRequestSubmitted(138)) - http-outgoing-0 >> amz-sdk-retry: 0/0/500 |
| http.headers (LoggingManagedHttpClientConnection.java:onRequestSubmitted(138)) - http-outgoing-0 >> Content-Type: application/octet-stream |
| http.headers (LoggingManagedHttpClientConnection.java:onRequestSubmitted(138)) - http-outgoing-0 >> Content-Length: 0 |
| http.headers (LoggingManagedHttpClientConnection.java:onRequestSubmitted(138)) - http-outgoing-0 >> Connection: Keep-Alive |
| http.wire (Wire.java:wire(72)) - http-outgoing-0 >> "PUT /test/ HTTP/1.1[\r][\n]" |
| http.wire (Wire.java:wire(72)) - http-outgoing-0 >> "Host: ireland-new.s3-eu-west-1.amazonaws.com[\r][\n]" |
| http.wire (Wire.java:wire(72)) - http-outgoing-0 >> "x-amz-content-sha256: UNSIGNED-PAYLOAD[\r][\n]" |
| http.wire (Wire.java:wire(72)) - http-outgoing-0 >> "Authorization: AWS4-HMAC-SHA256 Credential=AKIAIYZ5JEEEER/20170904/eu-west-1/s3/aws4_request, ,,, |
| http.wire (Wire.java:wire(72)) - http-outgoing-0 >> "X-Amz-Date: 20170904T172929Z[\r][\n]" |
| http.wire (Wire.java:wire(72)) - http-outgoing-0 >> "User-Agent: 3.0.0-beta-1, aws-sdk-java/1.11.134 ... |
| http.wire (Wire.java:wire(72)) - http-outgoing-0 >> "amz-sdk-invocation-id: 75b530f8-ad31-1ad3-13db-9bd53666b30d[\r][\n]" |
| http.wire (Wire.java:wire(72)) - http-outgoing-0 >> "amz-sdk-retry: 0/0/500[\r][\n]" |
| http.wire (Wire.java:wire(72)) - http-outgoing-0 >> "Content-Type: application/octet-stream[\r][\n]" |
| http.wire (Wire.java:wire(72)) - http-outgoing-0 >> "Content-Length: 0[\r][\n]" |
| http.wire (Wire.java:wire(72)) - http-outgoing-0 >> "Connection: Keep-Alive[\r][\n]" |
| http.wire (Wire.java:wire(72)) - http-outgoing-0 >> "[\r][\n]" |
| http.wire (Wire.java:wire(72)) - http-outgoing-0 << "HTTP/1.1 200 OK[\r][\n]" |
| http.wire (Wire.java:wire(72)) - http-outgoing-0 << "x-amz-id-2: mad9GqKztzlL0cdnCKAj9GJOAs+DUjbSC5jRkO7W1E7Nk2BUmFvt81bhSNPGdZmyyKqQI9i/B/A=[\r][\n]" |
| http.wire (Wire.java:wire(72)) - http-outgoing-0 << "x-amz-request-id: C953D2FE4ABF5C51[\r][\n]" |
| http.wire (Wire.java:wire(72)) - http-outgoing-0 << "Date: Mon, 04 Sep 2017 17:29:30 GMT[\r][\n]" |
| http.wire (Wire.java:wire(72)) - http-outgoing-0 << "ETag: "d41d8cd98f00b204e9800998ecf8427e"[\r][\n]" |
| http.wire (Wire.java:wire(72)) - http-outgoing-0 << "Content-Length: 0[\r][\n]" |
| http.wire (Wire.java:wire(72)) - http-outgoing-0 << "Server: AmazonS3[\r][\n]" |
| http.wire (Wire.java:wire(72)) - http-outgoing-0 << "[\r][\n]" |
| http.headers (LoggingManagedHttpClientConnection.java:onResponseReceived(124)) - http-outgoing-0 << HTTP/1.1 200 OK |
| http.headers (LoggingManagedHttpClientConnection.java:onResponseReceived(127)) - http-outgoing-0 << x-amz-id-2: mad9GqKztzlL0cdnCKAj9GJOAs+DUjbSC5jRkO7W1E7Nk2BUmFvt81bhSNPGdZmyyKqQI9i/B/A= |
| http.headers (LoggingManagedHttpClientConnection.java:onResponseReceived(127)) - http-outgoing-0 << x-amz-request-id: C953D2FE4ABF5C51 |
| http.headers (LoggingManagedHttpClientConnection.java:onResponseReceived(127)) - http-outgoing-0 << Date: Mon, 04 Sep 2017 17:29:30 GMT |
| http.headers (LoggingManagedHttpClientConnection.java:onResponseReceived(127)) - http-outgoing-0 << ETag: "d41d8cd98f00b204e9800998ecf8427e" |
| http.headers (LoggingManagedHttpClientConnection.java:onResponseReceived(127)) - http-outgoing-0 << Content-Length: 0 |
| http.headers (LoggingManagedHttpClientConnection.java:onResponseReceived(127)) - http-outgoing-0 << Server: AmazonS3 |
| execchain.MainClientExec (MainClientExec.java:execute(284)) - Connection can be kept alive for 60000 MILLISECONDS |
| </pre></div></div> |
| </div></div> |
| <div class="section"> |
| <h2><a name="Reducing_failures_by_configuring_retry_policy"></a><a name="retries"></a> Reducing failures by configuring retry policy</h2> |
| <p>The S3A client can ba configured to retry those operations which are considered retryable. That can be because they are idempotent, or because the failure happened before the request was processed by S3.</p> |
| <p>The number of retries and interval between each retry can be configured:</p> |
| |
| <div> |
| <div> |
| <pre class="source"><property> |
| <name>fs.s3a.retry.limit</name> |
| <value>7</value> |
| <description> |
| Number of times to retry any repeatable S3 client request on failure, |
| excluding throttling requests. |
| </description> |
| </property> |
| |
| <property> |
| <name>fs.s3a.retry.interval</name> |
| <value>500ms</value> |
| <description> |
| Initial retry interval when retrying operations for any reason other |
| than S3 throttle errors. |
| </description> |
| </property> |
| </pre></div></div> |
| |
| <p>Not all failures are retried. Specifically excluded are those considered unrecoverable:</p> |
| <ul> |
| |
| <li>Low-level networking: <tt>UnknownHostException</tt>, <tt>NoRouteToHostException</tt>.</li> |
| <li>302 redirects.</li> |
| <li>Missing resources, 404/<tt>FileNotFoundException</tt>.</li> |
| <li>HTTP 416 response/<tt>EOFException</tt>. This can surface if the length of a file changes while another client is reading it.</li> |
| <li>Failures during execution or result processing of non-idempotent operations where it is considered likely that the operation has already taken place.</li> |
| </ul> |
| <p>In future, others may be added to this list.</p> |
| <p>When one of these failures arises in the S3/S3A client, the retry mechanism is bypassed and the operation will fail.</p> |
| <p><i>Warning</i>: the S3A client considers DELETE, PUT and COPY operations to be idempotent, and will retry them on failure. These are only really idempotent if no other client is attempting to manipulate the same objects, such as: renaming() the directory tree or uploading files to the same location. Please don’t do that. Given that the emulated directory rename and delete operations are not atomic, even without retries, multiple S3 clients working with the same paths can interfere with each other</p> |
| <div class="section"> |
| <h3><a name="Tuning_S3Guard_open.2Frename_Retry_Policies"></a><a name="retries"></a> Tuning S3Guard open/rename Retry Policies</h3> |
| <p>When the S3A connector attempts to open a file for which it has an entry in its database, it will retry if the desired file is not found. This is done if:</p> |
| <ul> |
| |
| <li>No file is found in S3.</li> |
| <li>There is a file but its version or etag is not consistent with S3Guard table.</li> |
| </ul> |
| <p>These can be symptoms of S3’s eventual consistency, hence the retries. They can also be caused by changes having been made to the S3 Store without SGuard being kept up to date.</p> |
| <p>For this reason, the number of retry events are limited.</p> |
| |
| <div> |
| <div> |
| <pre class="source"><property> |
| <name>fs.s3a.s3guard.consistency.retry.limit</name> |
| <value>7</value> |
| <description> |
| Number of times to retry attempts to read/open/copy files when |
| S3Guard believes a specific version of the file to be available, |
| but the S3 request does not find any version of a file, or a different |
| version. |
| </description> |
| </property> |
| |
| <property> |
| <name>fs.s3a.s3guard.consistency.retry.interval</name> |
| <value>2s</value> |
| <description> |
| Initial interval between attempts to retry operations while waiting for S3 |
| to become consistent with the S3Guard data. |
| An exponential back-off is used here: every failure doubles the delay. |
| </description> |
| </property> |
| </pre></div></div> |
| </div> |
| <div class="section"> |
| <h3><a name="Tuning_AWS_request_timeouts"></a><a name="aws-timeouts"></a> Tuning AWS request timeouts</h3> |
| <p>It is possible to configure a global timeout for AWS service calls using following property:</p> |
| |
| <div> |
| <div> |
| <pre class="source"><property> |
| <name>fs.s3a.connection.request.timeout</name> |
| <value>0</value> |
| <description> |
| Time out on HTTP requests to the AWS service; 0 means no timeout. |
| Measured in seconds; the usual time suffixes are all supported |
| |
| Important: this is the maximum duration of any AWS service call, |
| including upload and copy operations. If non-zero, it must be larger |
| than the time to upload multi-megabyte blocks to S3 from the client, |
| and to rename many-GB files. Use with care. |
| |
| Values that are larger than Integer.MAX_VALUE milliseconds are |
| converged to Integer.MAX_VALUE milliseconds |
| </description> |
| </property> |
| </pre></div></div> |
| |
| <p>If this value is configured too low, user may encounter <tt>SdkClientException</tt>s due to many requests timing-out.</p> |
| |
| <div> |
| <div> |
| <pre class="source">com.amazonaws.SdkClientException: Unable to execute HTTP request: |
| Request did not complete before the request timeout configuration.: |
| Unable to execute HTTP request: Request did not complete before the request timeout configuration. |
| at org.apache.hadoop.fs.s3a.S3AUtils.translateException(S3AUtils.java:205) |
| at org.apache.hadoop.fs.s3a.Invoker.once(Invoker.java:112) |
| at org.apache.hadoop.fs.s3a.Invoker.lambda$retry$4(Invoker.java:315) |
| at org.apache.hadoop.fs.s3a.Invoker.retryUntranslated(Invoker.java:407) |
| at org.apache.hadoop.fs.s3a.Invoker.retry(Invoker.java:311) |
| </pre></div></div> |
| |
| <p>When this happens, try to set <tt>fs.s3a.connection.request.timeout</tt> to a larger value or disable it completely by setting it to <tt>0</tt>.</p></div></div> |
| </div> |
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