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| <h1 title="Package" class="title">Package org.apache.hadoop.fs</h1> |
| <div class="docSummary"> |
| <div class="block">Implementations of <a href="../../../../org/apache/hadoop/fs/AbstractFileSystem.html" title="class in org.apache.hadoop.fs"><code>AbstractFileSystem</code></a> for hdfs |
| over rpc and hdfs over web.</div> |
| </div> |
| <p>See: <a href="#package.description">Description</a></p> |
| </div> |
| <div class="contentContainer"> |
| <ul class="blockList"> |
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| <table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="Interface Summary table, listing interfaces, and an explanation"> |
| <caption><span>Interface Summary</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Interface</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tbody> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/Abortable.html" title="interface in org.apache.hadoop.fs">Abortable</a></td> |
| <td class="colLast"> |
| <div class="block">Abort data being written to a stream, so that close() does |
| not write the data.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/BatchListingOperations.html" title="interface in org.apache.hadoop.fs">BatchListingOperations</a></td> |
| <td class="colLast"> |
| <div class="block">Interface filesystems MAY implement to offer a batched list.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/BlockStoragePolicySpi.html" title="interface in org.apache.hadoop.fs">BlockStoragePolicySpi</a></td> |
| <td class="colLast"> |
| <div class="block">A storage policy specifies the placement of block replicas on specific |
| storage types.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/ByteBufferPositionedReadable.html" title="interface in org.apache.hadoop.fs">ByteBufferPositionedReadable</a></td> |
| <td class="colLast"> |
| <div class="block">Implementers of this interface provide a positioned read API that writes to a |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio"><code>ByteBuffer</code></a> rather than a <code>byte[]</code>.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/ByteBufferReadable.html" title="interface in org.apache.hadoop.fs">ByteBufferReadable</a></td> |
| <td class="colLast"> |
| <div class="block">Implementers of this interface provide a read API that writes to a |
| ByteBuffer, not a byte[].</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/CanSetDropBehind.html" title="interface in org.apache.hadoop.fs">CanSetDropBehind</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/CanSetReadahead.html" title="interface in org.apache.hadoop.fs">CanSetReadahead</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/CanUnbuffer.html" title="interface in org.apache.hadoop.fs">CanUnbuffer</a></td> |
| <td class="colLast"> |
| <div class="block">FSDataInputStreams implement this interface to indicate that they can clear |
| their buffers on request.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/FSBuilder.html" title="interface in org.apache.hadoop.fs">FSBuilder</a><S,B extends <a href="../../../../org/apache/hadoop/fs/FSBuilder.html" title="interface in org.apache.hadoop.fs">FSBuilder</a><S,B>></td> |
| <td class="colLast"> |
| <div class="block">The base interface which various FileSystem FileContext Builder |
| interfaces can extend, and which underlying implementations |
| will then implement.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/FsConstants.html" title="interface in org.apache.hadoop.fs">FsConstants</a></td> |
| <td class="colLast"> |
| <div class="block">FileSystem related constants.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/FutureDataInputStreamBuilder.html" title="interface in org.apache.hadoop.fs">FutureDataInputStreamBuilder</a></td> |
| <td class="colLast"> |
| <div class="block">Builder for input streams and subclasses whose return value is |
| actually a completable future: this allows for better asynchronous |
| operation.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/MultipartUploader.html" title="interface in org.apache.hadoop.fs">MultipartUploader</a></td> |
| <td class="colLast"> |
| <div class="block">MultipartUploader is an interface for copying files multipart and across |
| multiple nodes.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/PartHandle.html" title="interface in org.apache.hadoop.fs">PartHandle</a></td> |
| <td class="colLast"> |
| <div class="block">Opaque, serializable reference to a part id for multipart uploads.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/PathFilter.html" title="interface in org.apache.hadoop.fs">PathFilter</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/PathHandle.html" title="interface in org.apache.hadoop.fs">PathHandle</a></td> |
| <td class="colLast"> |
| <div class="block">Opaque, serializable reference to an entity in the FileSystem.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/PositionedReadable.html" title="interface in org.apache.hadoop.fs">PositionedReadable</a></td> |
| <td class="colLast"> |
| <div class="block">Stream that permits positional reading.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/Seekable.html" title="interface in org.apache.hadoop.fs">Seekable</a></td> |
| <td class="colLast"> |
| <div class="block">Stream that permits seeking.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/StreamCapabilities.html" title="interface in org.apache.hadoop.fs">StreamCapabilities</a></td> |
| <td class="colLast"> |
| <div class="block">Interface to query streams for supported capabilities.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/Syncable.html" title="interface in org.apache.hadoop.fs">Syncable</a></td> |
| <td class="colLast"> |
| <div class="block">This is the interface for flush/sync operations.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/UploadHandle.html" title="interface in org.apache.hadoop.fs">UploadHandle</a></td> |
| <td class="colLast"> |
| <div class="block">Opaque, serializable reference to an uploadId for multipart uploads.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </li> |
| <li class="blockList"> |
| <table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="Class Summary table, listing classes, and an explanation"> |
| <caption><span>Class Summary</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Class</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tbody> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/AbstractFileSystem.html" title="class in org.apache.hadoop.fs">AbstractFileSystem</a></td> |
| <td class="colLast"> |
| <div class="block">This class provides an interface for implementors of a Hadoop file system |
| (analogous to the VFS of Unix).</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/AvroFSInput.html" title="class in org.apache.hadoop.fs">AvroFSInput</a></td> |
| <td class="colLast"> |
| <div class="block">Adapts an <a href="../../../../org/apache/hadoop/fs/FSDataInputStream.html" title="class in org.apache.hadoop.fs"><code>FSDataInputStream</code></a> to Avro's SeekableInput interface.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/BlockLocation.html" title="class in org.apache.hadoop.fs">BlockLocation</a></td> |
| <td class="colLast"> |
| <div class="block">Represents the network location of a block, information about the hosts |
| that contain block replicas, and other block metadata (E.g.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/ChecksumFileSystem.html" title="class in org.apache.hadoop.fs">ChecksumFileSystem</a></td> |
| <td class="colLast"> |
| <div class="block">Abstract Checksumed FileSystem.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/CommonConfigurationKeysPublic.html" title="class in org.apache.hadoop.fs">CommonConfigurationKeysPublic</a></td> |
| <td class="colLast"> |
| <div class="block">This class contains constants for configuration keys used |
| in the common code.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/ContentSummary.html" title="class in org.apache.hadoop.fs">ContentSummary</a></td> |
| <td class="colLast"> |
| <div class="block">Store the summary of a content (a directory or a file).</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/FileChecksum.html" title="class in org.apache.hadoop.fs">FileChecksum</a></td> |
| <td class="colLast"> |
| <div class="block">An abstract class representing file checksums for files.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/FileContext.html" title="class in org.apache.hadoop.fs">FileContext</a></td> |
| <td class="colLast"> |
| <div class="block">The FileContext class provides an interface for users of the Hadoop |
| file system.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/FileStatus.html" title="class in org.apache.hadoop.fs">FileStatus</a></td> |
| <td class="colLast"> |
| <div class="block">Interface that represents the client side information for a file.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/FileSystem.html" title="class in org.apache.hadoop.fs">FileSystem</a></td> |
| <td class="colLast"> |
| <div class="block">An abstract base class for a fairly generic filesystem.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/FileUtil.html" title="class in org.apache.hadoop.fs">FileUtil</a></td> |
| <td class="colLast"> |
| <div class="block">A collection of file-processing util methods</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/FilterFileSystem.html" title="class in org.apache.hadoop.fs">FilterFileSystem</a></td> |
| <td class="colLast"> |
| <div class="block">A <code>FilterFileSystem</code> contains |
| some other file system, which it uses as |
| its basic file system, possibly transforming |
| the data along the way or providing additional |
| functionality.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/FSDataInputStream.html" title="class in org.apache.hadoop.fs">FSDataInputStream</a></td> |
| <td class="colLast"> |
| <div class="block">Utility that wraps a <a href="../../../../org/apache/hadoop/fs/FSInputStream.html" title="class in org.apache.hadoop.fs"><code>FSInputStream</code></a> in a <a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataInputStream.html?is-external=true" title="class or interface in java.io"><code>DataInputStream</code></a> |
| and buffers input through a <a href="https://docs.oracle.com/javase/8/docs/api/java/io/BufferedInputStream.html?is-external=true" title="class or interface in java.io"><code>BufferedInputStream</code></a>.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/FSDataOutputStream.html" title="class in org.apache.hadoop.fs">FSDataOutputStream</a></td> |
| <td class="colLast"> |
| <div class="block">Utility that wraps a <a href="https://docs.oracle.com/javase/8/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io"><code>OutputStream</code></a> in a <a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutputStream.html?is-external=true" title="class or interface in java.io"><code>DataOutputStream</code></a>.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/FSDataOutputStreamBuilder.html" title="class in org.apache.hadoop.fs">FSDataOutputStreamBuilder</a><S extends <a href="../../../../org/apache/hadoop/fs/FSDataOutputStream.html" title="class in org.apache.hadoop.fs">FSDataOutputStream</a>,B extends <a href="../../../../org/apache/hadoop/fs/FSDataOutputStreamBuilder.html" title="class in org.apache.hadoop.fs">FSDataOutputStreamBuilder</a><S,B>></td> |
| <td class="colLast"> |
| <div class="block">Builder for <a href="../../../../org/apache/hadoop/fs/FSDataOutputStream.html" title="class in org.apache.hadoop.fs"><code>FSDataOutputStream</code></a> and its subclasses.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/FSInputStream.html" title="class in org.apache.hadoop.fs">FSInputStream</a></td> |
| <td class="colLast"> |
| <div class="block">FSInputStream is a generic old InputStream with a little bit |
| of RAF-style seek ability.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/FsServerDefaults.html" title="class in org.apache.hadoop.fs">FsServerDefaults</a></td> |
| <td class="colLast"> |
| <div class="block">Provides server default configuration values to clients.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/FsStatus.html" title="class in org.apache.hadoop.fs">FsStatus</a></td> |
| <td class="colLast"> |
| <div class="block">This class is used to represent the capacity, free and used space on a |
| <a href="../../../../org/apache/hadoop/fs/FileSystem.html" title="class in org.apache.hadoop.fs"><code>FileSystem</code></a>.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/GlobFilter.html" title="class in org.apache.hadoop.fs">GlobFilter</a></td> |
| <td class="colLast"> |
| <div class="block">A filter for POSIX glob pattern with brace expansions.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/LocalFileSystem.html" title="class in org.apache.hadoop.fs">LocalFileSystem</a></td> |
| <td class="colLast"> |
| <div class="block">Implement the FileSystem API for the checksumed local filesystem.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/LocatedFileStatus.html" title="class in org.apache.hadoop.fs">LocatedFileStatus</a></td> |
| <td class="colLast"> |
| <div class="block">This class defines a FileStatus that includes a file's block locations.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/Options.html" title="class in org.apache.hadoop.fs">Options</a></td> |
| <td class="colLast"> |
| <div class="block">This class contains options related to file system operations.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/PartialListing.html" title="class in org.apache.hadoop.fs">PartialListing</a><T extends <a href="../../../../org/apache/hadoop/fs/FileStatus.html" title="class in org.apache.hadoop.fs">FileStatus</a>></td> |
| <td class="colLast"> |
| <div class="block">A partial listing of the children of a parent directory.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/Path.html" title="class in org.apache.hadoop.fs">Path</a></td> |
| <td class="colLast"> |
| <div class="block">Names a file or directory in a <a href="../../../../org/apache/hadoop/fs/FileSystem.html" title="class in org.apache.hadoop.fs"><code>FileSystem</code></a>.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/QuotaUsage.html" title="class in org.apache.hadoop.fs">QuotaUsage</a></td> |
| <td class="colLast"> |
| <div class="block">Store the quota usage of a directory.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/RawLocalFileSystem.html" title="class in org.apache.hadoop.fs">RawLocalFileSystem</a></td> |
| <td class="colLast"> |
| <div class="block">Implement the FileSystem API for the raw local filesystem.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/StorageStatistics.html" title="class in org.apache.hadoop.fs">StorageStatistics</a></td> |
| <td class="colLast"> |
| <div class="block">StorageStatistics contains statistics data for a FileSystem or FileContext |
| instance.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/StreamCapabilitiesPolicy.html" title="class in org.apache.hadoop.fs">StreamCapabilitiesPolicy</a></td> |
| <td class="colLast"> |
| <div class="block">Static methods to implement policies for <a href="../../../../org/apache/hadoop/fs/StreamCapabilities.html" title="interface in org.apache.hadoop.fs"><code>StreamCapabilities</code></a>.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/SWebHdfs.html" title="class in org.apache.hadoop.fs">SWebHdfs</a></td> |
| <td class="colLast"> |
| <div class="block">AbstractFileSystem implementation for HDFS over the web (secure).</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/Trash.html" title="class in org.apache.hadoop.fs">Trash</a></td> |
| <td class="colLast"> |
| <div class="block">Provides a trash facility which supports pluggable Trash policies.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/TrashPolicy.html" title="class in org.apache.hadoop.fs">TrashPolicy</a></td> |
| <td class="colLast"> |
| <div class="block">This interface is used for implementing different Trash policies.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/WebHdfs.html" title="class in org.apache.hadoop.fs">WebHdfs</a></td> |
| <td class="colLast"> |
| <div class="block">AbstractFileSystem implementation for HDFS over the web.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </li> |
| <li class="blockList"> |
| <table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="Enum Summary table, listing enums, and an explanation"> |
| <caption><span>Enum Summary</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Enum</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tbody> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../org/apache/hadoop/fs/CacheFlag.html" title="enum in org.apache.hadoop.fs">CacheFlag</a></td> |
| <td class="colLast"> |
| <div class="block">Specifies semantics for CacheDirective operations.</div> |
| </td> |
| </tr> |
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