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| <div class="subTitle">org.apache.hadoop.hbase.fs</div> |
| <h2 title="Class HFileSystem" class="title">Class HFileSystem</h2> |
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| <ul class="inheritance"> |
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| <li> |
| <ul class="inheritance"> |
| <li>org.apache.hadoop.conf.Configured</li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.hadoop.fs.FileSystem</li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.hadoop.fs.FilterFileSystem</li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.hadoop.hbase.fs.HFileSystem</li> |
| </ul> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="https://docs.oracle.com/javase/8/docs/api/java/io/Closeable.html?is-external=true" title="class or interface in java.io">Closeable</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang">AutoCloseable</a>, org.apache.hadoop.conf.Configurable, org.apache.hadoop.security.token.DelegationTokenIssuer</dd> |
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| <br> |
| <pre>@InterfaceAudience.Private |
| public class <a href="../../../../../src-html/org/apache/hadoop/hbase/fs/HFileSystem.html#line.65">HFileSystem</a> |
| extends org.apache.hadoop.fs.FilterFileSystem</pre> |
| <div class="block">An encapsulation for the FileSystem object that hbase uses to access |
| data. This class allows the flexibility of using |
| separate filesystem objects for reading and writing hfiles and wals.</div> |
| </li> |
| </ul> |
| </div> |
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| <caption><span>Nested Classes</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Class and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>(package private) static interface </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/fs/HFileSystem.ReorderBlocks.html" title="interface in org.apache.hadoop.hbase.fs">HFileSystem.ReorderBlocks</a></span></code> |
| <div class="block">Interface to implement to add a specific reordering logic in hdfs.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>(package private) static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/fs/HFileSystem.ReorderWALBlocks.html" title="class in org.apache.hadoop.hbase.fs">HFileSystem.ReorderWALBlocks</a></span></code> |
| <div class="block">We're putting at lowest priority the wal files blocks that are on the same datanode |
| as the original regionserver which created these files.</div> |
| </td> |
| </tr> |
| </table> |
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| </a> |
| <h3>Nested classes/interfaces inherited from class org.apache.hadoop.fs.FileSystem</h3> |
| <code>org.apache.hadoop.fs.FileSystem.DirectoryEntries, org.apache.hadoop.fs.FileSystem.Statistics</code></li> |
| </ul> |
| </li> |
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| <h3>Field Summary</h3> |
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| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Field and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static org.slf4j.Logger</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/fs/HFileSystem.html#LOG">LOG</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private org.apache.hadoop.fs.FileSystem</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/fs/HFileSystem.html#noChecksumFs">noChecksumFs</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static byte</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/fs/HFileSystem.html#unspecifiedStoragePolicyId">unspecifiedStoragePolicyId</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/fs/HFileSystem.html#useHBaseChecksum">useHBaseChecksum</a></span></code> </td> |
| </tr> |
| </table> |
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| </a> |
| <h3>Fields inherited from class org.apache.hadoop.fs.FilterFileSystem</h3> |
| <code>fs, swapScheme</code></li> |
| </ul> |
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| <li class="blockList"><a name="fields.inherited.from.class.org.apache.hadoop.fs.FileSystem"> |
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| </a> |
| <h3>Fields inherited from class org.apache.hadoop.fs.FileSystem</h3> |
| <code>DEFAULT_FS, FS_DEFAULT_NAME_KEY, SHUTDOWN_HOOK_PRIORITY, statistics, TRASH_PREFIX, USER_HOME_PREFIX</code></li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
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| <th class="colOne" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/fs/HFileSystem.html#HFileSystem-org.apache.hadoop.conf.Configuration-boolean-">HFileSystem</a></span>(org.apache.hadoop.conf.Configuration conf, |
| boolean useHBaseChecksum)</code> |
| <div class="block">Create a FileSystem object for HBase regionservers.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/fs/HFileSystem.html#HFileSystem-org.apache.hadoop.fs.FileSystem-">HFileSystem</a></span>(org.apache.hadoop.fs.FileSystem fs)</code> |
| <div class="block">Wrap a FileSystem object within a HFileSystem.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ========== METHOD SUMMARY =========== --> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/fs/HFileSystem.html#addLocationsOrderInterceptor-org.apache.hadoop.conf.Configuration-">addLocationsOrderInterceptor</a></span>(org.apache.hadoop.conf.Configuration conf)</code> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>(package private) static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/fs/HFileSystem.html#addLocationsOrderInterceptor-org.apache.hadoop.conf.Configuration-org.apache.hadoop.hbase.fs.HFileSystem.ReorderBlocks-">addLocationsOrderInterceptor</a></span>(org.apache.hadoop.conf.Configuration conf, |
| <a href="../../../../../org/apache/hadoop/hbase/fs/HFileSystem.ReorderBlocks.html" title="interface in org.apache.hadoop.hbase.fs">HFileSystem.ReorderBlocks</a> lrb)</code> |
| <div class="block">Add an interceptor on the calls to the namenode#getBlockLocations from the DFSClient |
| linked to this FileSystem.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/fs/HFileSystem.html#close--">close</a></span>()</code> |
| <div class="block">Close this filesystem object</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>org.apache.hadoop.fs.FSDataOutputStream</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/fs/HFileSystem.html#createNonRecursive-org.apache.hadoop.fs.Path-boolean-int-short-long-org.apache.hadoop.util.Progressable-">createNonRecursive</a></span>(org.apache.hadoop.fs.Path f, |
| boolean overwrite, |
| int bufferSize, |
| short replication, |
| long blockSize, |
| org.apache.hadoop.util.Progressable progress)</code> |
| <div class="block">The org.apache.hadoop.fs.FilterFileSystem does not yet support |
| createNonRecursive.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>private static org.apache.hadoop.hdfs.protocol.ClientProtocol</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/fs/HFileSystem.html#createReorderingProxy-org.apache.hadoop.hdfs.protocol.ClientProtocol-org.apache.hadoop.hbase.fs.HFileSystem.ReorderBlocks-org.apache.hadoop.conf.Configuration-">createReorderingProxy</a></span>(org.apache.hadoop.hdfs.protocol.ClientProtocol cp, |
| <a href="../../../../../org/apache/hadoop/hbase/fs/HFileSystem.ReorderBlocks.html" title="interface in org.apache.hadoop.hbase.fs">HFileSystem.ReorderBlocks</a> lrb, |
| org.apache.hadoop.conf.Configuration conf)</code> </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>static org.apache.hadoop.fs.FileSystem</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/fs/HFileSystem.html#get-org.apache.hadoop.conf.Configuration-">get</a></span>(org.apache.hadoop.conf.Configuration conf)</code> |
| <div class="block">Create a new HFileSystem object, similar to FileSystem.get().</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>org.apache.hadoop.fs.FileSystem</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/fs/HFileSystem.html#getBackingFs--">getBackingFs</a></span>()</code> |
| <div class="block">Returns the underlying filesystem</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>static org.apache.hadoop.fs.FileSystem</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/fs/HFileSystem.html#getLocalFs-org.apache.hadoop.conf.Configuration-">getLocalFs</a></span>(org.apache.hadoop.conf.Configuration conf)</code> |
| <div class="block">Wrap a LocalFileSystem within a HFileSystem.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>org.apache.hadoop.fs.FileSystem</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/fs/HFileSystem.html#getNoChecksumFs--">getNoChecksumFs</a></span>()</code> |
| <div class="block">Returns the filesystem that is specially setup for |
| doing reads from storage.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/fs/HFileSystem.html#getStoragePolicyForOldHDFSVersion-org.apache.hadoop.fs.Path-">getStoragePolicyForOldHDFSVersion</a></span>(org.apache.hadoop.fs.Path path)</code> |
| <div class="block">Before Hadoop 2.8.0, there's no getStoragePolicy method for FileSystem interface, and we need |
| to keep compatible with it.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/fs/HFileSystem.html#getStoragePolicyName-org.apache.hadoop.fs.Path-">getStoragePolicyName</a></span>(org.apache.hadoop.fs.Path path)</code> |
| <div class="block">Get the storage policy of the source path (directory/file).</div> |
| </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>private org.apache.hadoop.fs.FileSystem</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/fs/HFileSystem.html#maybeWrapFileSystem-org.apache.hadoop.fs.FileSystem-org.apache.hadoop.conf.Configuration-">maybeWrapFileSystem</a></span>(org.apache.hadoop.fs.FileSystem base, |
| org.apache.hadoop.conf.Configuration conf)</code> |
| <div class="block">Returns an instance of Filesystem wrapped into the class specified in |
| hbase.fs.wrapper property, if one is set in the configuration, returns |
| unmodified FS instance passed in as an argument otherwise.</div> |
| </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code>private static org.apache.hadoop.fs.FileSystem</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/fs/HFileSystem.html#newInstanceFileSystem-org.apache.hadoop.conf.Configuration-">newInstanceFileSystem</a></span>(org.apache.hadoop.conf.Configuration conf)</code> |
| <div class="block">Returns a brand new instance of the FileSystem.</div> |
| </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/fs/HFileSystem.html#setStoragePolicy-org.apache.hadoop.fs.Path-java.lang.String-">setStoragePolicy</a></span>(org.apache.hadoop.fs.Path path, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> policyName)</code> |
| <div class="block">Set the source path (directory/file) to the specified storage policy.</div> |
| </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/fs/HFileSystem.html#useHBaseChecksum--">useHBaseChecksum</a></span>()</code> |
| <div class="block">Are we verifying checksums in HBase?</div> |
| </td> |
| </tr> |
| </table> |
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| </a> |
| <h3>Methods inherited from class org.apache.hadoop.fs.FilterFileSystem</h3> |
| <code>access, append, appendFile, canonicalizeUri, checkPath, completeLocalOutput, concat, copyFromLocalFile, copyFromLocalFile, copyFromLocalFile, copyToLocalFile, create, create, createFile, createNonRecursive, createPathHandle, createSnapshot, createSymlink, delete, deleteSnapshot, getAclStatus, getAllStoragePolicies, getCanonicalUri, getChildFileSystems, getConf, getDefaultBlockSize, getDefaultBlockSize, getDefaultReplication, getDefaultReplication, getFileBlockLocations, getFileChecksum, getFileChecksum, getFileLinkStatus, getFileStatus, getHomeDirectory, getInitialWorkingDirectory, getLinkTarget, getRawFileSystem, getServerDefaults, getServerDefaults, getStatus, getStoragePolicy, getTrashRoot, getTrashRoots, getUri, getUsed, getUsed, getWorkingDirectory, getXAttr, getXAttrs, getXAttrs, initialize, listCorruptFileBlocks, listLocatedStatus, listLocatedStatus, listStatus, listStatusIterator, listXAttrs, makeQualified, mkdirs, modifyAclEntries, open, open, primitiveCreate, primitiveMkdir, removeAcl, removeAclEntries, removeDefaultAcl, removeXAttr, rename, rename, renameSnapshot, resolveLink, resolvePath, setAcl, setOwner, setPermission, setReplication, setTimes, setVerifyChecksum, setWorkingDirectory, setWriteChecksum, setXAttr, setXAttr, startLocalOutput, supportsSymlinks, truncate, unsetStoragePolicy</code></li> |
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| </a> |
| <h3>Methods inherited from class org.apache.hadoop.fs.FileSystem</h3> |
| <code>append, append, areSymlinksEnabled, cancelDeleteOnExit, clearStatistics, closeAll, closeAllForUGI, copyFromLocalFile, copyToLocalFile, copyToLocalFile, create, create, create, create, create, create, create, create, create, create, create, createNewFile, createNonRecursive, createSnapshot, delete, deleteOnExit, enableSymlinks, exists, fixRelativePart, get, get, getAdditionalTokenIssuers, getAllStatistics, getBlockSize, getCanonicalServiceName, getContentSummary, getDefaultPort, getDefaultUri, getDelegationToken, getFileBlockLocations, getFileSystemClass, getFSofPath, getGlobalStorageStatistics, getLength, getLocal, getName, getNamed, getPathHandle, getQuotaUsage, getReplication, getScheme, getStatistics, getStatistics, getStatus, getStorageStatistics, globStatus, globStatus, isDirectory, isFile, listFiles, listStatus, listStatus, listStatus, listStatusBatch, mkdirs, mkdirs, moveFromLocalFile, moveFromLocalFile, moveToLocalFile, newInstance, newInstance, newInstance, newInstanceLocal, open, open, primitiveMkdir, printStatistics, processDeleteOnExit, setDefaultUri, setDefaultUri</code></li> |
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| <code>addDelegationTokens, collectDelegationTokens</code></li> |
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| <pre>public <a href="../../../../../src-html/org/apache/hadoop/hbase/fs/HFileSystem.html#line.79">HFileSystem</a>(org.apache.hadoop.conf.Configuration conf, |
| boolean useHBaseChecksum) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Create a FileSystem object for HBase regionservers.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>conf</code> - The configuration to be used for the filesystem</dd> |
| <dd><code>useHBaseChecksum</code> - if true, then use |
| checksum verfication in hbase, otherwise |
| delegate checksum verification to the FileSystem.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
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| <pre>public <a href="../../../../../src-html/org/apache/hadoop/hbase/fs/HFileSystem.html#line.128">HFileSystem</a>(org.apache.hadoop.fs.FileSystem fs)</pre> |
| <div class="block">Wrap a FileSystem object within a HFileSystem. The noChecksumFs and |
| writefs are both set to be the same specified fs. |
| Do not verify hbase-checksums while reading data from filesystem.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>fs</code> - Set the noChecksumFs and writeFs to this specified filesystem.</dd> |
| </dl> |
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| <pre>public org.apache.hadoop.fs.FileSystem <a href="../../../../../src-html/org/apache/hadoop/hbase/fs/HFileSystem.html#line.141">getNoChecksumFs</a>()</pre> |
| <div class="block">Returns the filesystem that is specially setup for |
| doing reads from storage. This object avoids doing |
| checksum verifications for reads.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The FileSystem object that can be used to read data |
| from files.</dd> |
| </dl> |
| </li> |
| </ul> |
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| <pre>public org.apache.hadoop.fs.FileSystem <a href="../../../../../src-html/org/apache/hadoop/hbase/fs/HFileSystem.html#line.149">getBackingFs</a>() |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Returns the underlying filesystem</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The underlying FileSystem for this FilterFileSystem object.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
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| <h4>setStoragePolicy</h4> |
| <pre>public void <a href="../../../../../src-html/org/apache/hadoop/hbase/fs/HFileSystem.html#line.160">setStoragePolicy</a>(org.apache.hadoop.fs.Path path, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> policyName)</pre> |
| <div class="block">Set the source path (directory/file) to the specified storage policy.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code>setStoragePolicy</code> in class <code>org.apache.hadoop.fs.FilterFileSystem</code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>path</code> - The source path (directory/file).</dd> |
| <dd><code>policyName</code> - The name of the storage policy: 'HOT', 'COLD', etc. |
| See see hadoop 2.6+ org.apache.hadoop.hdfs.protocol.HdfsConstants for possible list e.g |
| 'COLD', 'WARM', 'HOT', 'ONE_SSD', 'ALL_SSD', 'LAZY_PERSIST'.</dd> |
| </dl> |
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| <h4>getStoragePolicyName</h4> |
| <pre>@Nullable |
| public <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/fs/HFileSystem.html#line.171">getStoragePolicyName</a>(org.apache.hadoop.fs.Path path)</pre> |
| <div class="block">Get the storage policy of the source path (directory/file).</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>path</code> - The source path (directory/file).</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Storage policy name, or <code>null</code> if not using <code>DistributedFileSystem</code> or |
| exception thrown when trying to get policy</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getStoragePolicyForOldHDFSVersion-org.apache.hadoop.fs.Path-"> |
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| <h4>getStoragePolicyForOldHDFSVersion</h4> |
| <pre>private <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/fs/HFileSystem.html#line.191">getStoragePolicyForOldHDFSVersion</a>(org.apache.hadoop.fs.Path path)</pre> |
| <div class="block">Before Hadoop 2.8.0, there's no getStoragePolicy method for FileSystem interface, and we need |
| to keep compatible with it. See HADOOP-12161 for more details.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>path</code> - Path to get storage policy against</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the storage policy name</dd> |
| </dl> |
| </li> |
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| <pre>public boolean <a href="../../../../../src-html/org/apache/hadoop/hbase/fs/HFileSystem.html#line.227">useHBaseChecksum</a>()</pre> |
| <div class="block">Are we verifying checksums in HBase?</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>True, if hbase is configured to verify checksums, |
| otherwise false.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="close--"> |
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| <h4>close</h4> |
| <pre>public void <a href="../../../../../src-html/org/apache/hadoop/hbase/fs/HFileSystem.html#line.235">close</a>() |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Close this filesystem object</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/Closeable.html?is-external=true#close--" title="class or interface in java.io">close</a></code> in interface <code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/Closeable.html?is-external=true" title="class or interface in java.io">Closeable</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true#close--" title="class or interface in java.lang">close</a></code> in interface <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang">AutoCloseable</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code>close</code> in class <code>org.apache.hadoop.fs.FilterFileSystem</code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
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| </a> |
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| <h4>newInstanceFileSystem</h4> |
| <pre>private static org.apache.hadoop.fs.FileSystem <a href="../../../../../src-html/org/apache/hadoop/hbase/fs/HFileSystem.html#line.250">newInstanceFileSystem</a>(org.apache.hadoop.conf.Configuration conf) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Returns a brand new instance of the FileSystem. It does not use |
| the FileSystem.Cache. In newer versions of HDFS, we can directly |
| invoke FileSystem.newInstance(Configuration).</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>conf</code> - Configuration</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>A new instance of the filesystem</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="maybeWrapFileSystem-org.apache.hadoop.fs.FileSystem-org.apache.hadoop.conf.Configuration-"> |
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| <pre>private org.apache.hadoop.fs.FileSystem <a href="../../../../../src-html/org/apache/hadoop/hbase/fs/HFileSystem.html#line.281">maybeWrapFileSystem</a>(org.apache.hadoop.fs.FileSystem base, |
| org.apache.hadoop.conf.Configuration conf)</pre> |
| <div class="block">Returns an instance of Filesystem wrapped into the class specified in |
| hbase.fs.wrapper property, if one is set in the configuration, returns |
| unmodified FS instance passed in as an argument otherwise.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>base</code> - Filesystem instance to wrap</dd> |
| <dd><code>conf</code> - Configuration</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>wrapped instance of FS, or the same instance if no wrapping configured.</dd> |
| </dl> |
| </li> |
| </ul> |
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| <pre>public static boolean <a href="../../../../../src-html/org/apache/hadoop/hbase/fs/HFileSystem.html#line.294">addLocationsOrderInterceptor</a>(org.apache.hadoop.conf.Configuration conf) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="addLocationsOrderInterceptor-org.apache.hadoop.conf.Configuration-org.apache.hadoop.hbase.fs.HFileSystem.ReorderBlocks-"> |
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| <h4>addLocationsOrderInterceptor</h4> |
| <pre>static boolean <a href="../../../../../src-html/org/apache/hadoop/hbase/fs/HFileSystem.html#line.306">addLocationsOrderInterceptor</a>(org.apache.hadoop.conf.Configuration conf, |
| <a href="../../../../../org/apache/hadoop/hbase/fs/HFileSystem.ReorderBlocks.html" title="interface in org.apache.hadoop.hbase.fs">HFileSystem.ReorderBlocks</a> lrb)</pre> |
| <div class="block">Add an interceptor on the calls to the namenode#getBlockLocations from the DFSClient |
| linked to this FileSystem. See HBASE-6435 for the background. |
| <p/> |
| There should be no reason, except testing, to create a specific ReorderBlocks.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if the interceptor was added, false otherwise.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="createReorderingProxy-org.apache.hadoop.hdfs.protocol.ClientProtocol-org.apache.hadoop.hbase.fs.HFileSystem.ReorderBlocks-org.apache.hadoop.conf.Configuration-"> |
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| <h4>createReorderingProxy</h4> |
| <pre>private static org.apache.hadoop.hdfs.protocol.ClientProtocol <a href="../../../../../src-html/org/apache/hadoop/hbase/fs/HFileSystem.html#line.365">createReorderingProxy</a>(org.apache.hadoop.hdfs.protocol.ClientProtocol cp, |
| <a href="../../../../../org/apache/hadoop/hbase/fs/HFileSystem.ReorderBlocks.html" title="interface in org.apache.hadoop.hbase.fs">HFileSystem.ReorderBlocks</a> lrb, |
| org.apache.hadoop.conf.Configuration conf)</pre> |
| </li> |
| </ul> |
| <a name="get-org.apache.hadoop.conf.Configuration-"> |
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| <h4>get</h4> |
| <pre>public static org.apache.hadoop.fs.FileSystem <a href="../../../../../src-html/org/apache/hadoop/hbase/fs/HFileSystem.html#line.468">get</a>(org.apache.hadoop.conf.Configuration conf) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Create a new HFileSystem object, similar to FileSystem.get(). |
| This returns a filesystem object that avoids checksum |
| verification in the filesystem for hfileblock-reads. |
| For these blocks, checksum verification is done by HBase.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>getLocalFs</h4> |
| <pre>public static org.apache.hadoop.fs.FileSystem <a href="../../../../../src-html/org/apache/hadoop/hbase/fs/HFileSystem.html#line.475">getLocalFs</a>(org.apache.hadoop.conf.Configuration conf) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Wrap a LocalFileSystem within a HFileSystem.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="createNonRecursive-org.apache.hadoop.fs.Path-boolean-int-short-long-org.apache.hadoop.util.Progressable-"> |
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| <h4>createNonRecursive</h4> |
| <pre>public org.apache.hadoop.fs.FSDataOutputStream <a href="../../../../../src-html/org/apache/hadoop/hbase/fs/HFileSystem.html#line.486">createNonRecursive</a>(org.apache.hadoop.fs.Path f, |
| boolean overwrite, |
| int bufferSize, |
| short replication, |
| long blockSize, |
| org.apache.hadoop.util.Progressable progress) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">The org.apache.hadoop.fs.FilterFileSystem does not yet support |
| createNonRecursive. This is a hadoop bug and when it is fixed in Hadoop, |
| this definition will go away.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code>createNonRecursive</code> in class <code>org.apache.hadoop.fs.FileSystem</code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| </div> |
| <!-- ========= END OF CLASS DATA ========= --> |
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