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<div class="subTitle">org.apache.storm.hdfs.blobstore</div>
<h2 title="Class HdfsBlobStoreImpl" class="title">Class HdfsBlobStoreImpl</h2>
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<pre>public class <span class="typeNameLabel">HdfsBlobStoreImpl</span>
extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre>
<div class="block"><p>HDFS blob store impl.</p></div>
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<td class="colFirst"><code>class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/hdfs/blobstore/HdfsBlobStoreImpl.KeyInHashDirIterator.html" title="class in org.apache.storm.hdfs.blobstore">HdfsBlobStoreImpl.KeyInHashDirIterator</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>static org.apache.hadoop.fs.permission.FsPermission</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/hdfs/blobstore/HdfsBlobStoreImpl.html#BLOBSTORE_DIR_PERMISSION">BLOBSTORE_DIR_PERMISSION</a></span></code>&nbsp;</td>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/hdfs/blobstore/HdfsBlobStoreImpl.html#HdfsBlobStoreImpl-org.apache.hadoop.fs.Path-java.util.Map-">HdfsBlobStoreImpl</a></span>(org.apache.hadoop.fs.Path&nbsp;path,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;conf)</code>&nbsp;</td>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/hdfs/blobstore/HdfsBlobStoreImpl.html#HdfsBlobStoreImpl-org.apache.hadoop.fs.Path-java.util.Map-org.apache.hadoop.conf.Configuration-">HdfsBlobStoreImpl</a></span>(org.apache.hadoop.fs.Path&nbsp;path,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;conf,
org.apache.hadoop.conf.Configuration&nbsp;hconf)</code>&nbsp;</td>
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<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/hdfs/blobstore/HdfsBlobStoreImpl.html#delete-org.apache.hadoop.fs.Path-">delete</a></span>(org.apache.hadoop.fs.Path&nbsp;path)</code>&nbsp;</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/hdfs/blobstore/HdfsBlobStoreImpl.html#deleteKey-java.lang.String-">deleteKey</a></span>(<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>&nbsp;key)</code>
<div class="block">Delete a key from the blob store.</div>
</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/hdfs/blobstore/HdfsBlobStoreImpl.html#exists-java.lang.String-">exists</a></span>(<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>&nbsp;key)</code>
<div class="block">Check if the key exists in the blob store.</div>
</td>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/hdfs/blobstore/HdfsBlobStoreImpl.html#fullCleanup-long-">fullCleanup</a></span>(long&nbsp;age)</code>&nbsp;</td>
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<td class="colFirst"><code>protected int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/hdfs/blobstore/HdfsBlobStoreImpl.html#getBlobReplication-java.lang.String-">getBlobReplication</a></span>(<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>&nbsp;key)</code>&nbsp;</td>
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<td class="colFirst"><code>protected org.apache.hadoop.fs.Path</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/hdfs/blobstore/HdfsBlobStoreImpl.html#getKeyDir-java.lang.String-">getKeyDir</a></span>(<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>&nbsp;key)</code>&nbsp;</td>
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<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/hdfs/blobstore/HdfsBlobStoreImpl.html#getLastBlobUpdateTime--">getLastBlobUpdateTime</a></span>()</code>
<div class="block">Get the last update time of any blob.</div>
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<tr id="i7" class="rowColor">
<td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a>&lt;<a href="../../../../../org/apache/storm/blobstore/BlobStoreFile.html" title="class in org.apache.storm.blobstore">BlobStoreFile</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/hdfs/blobstore/HdfsBlobStoreImpl.html#listBlobStoreFiles-org.apache.hadoop.fs.Path-">listBlobStoreFiles</a></span>(org.apache.hadoop.fs.Path&nbsp;path)</code>&nbsp;</td>
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<tr id="i8" class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a>&lt;<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>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/hdfs/blobstore/HdfsBlobStoreImpl.html#listKeys--">listKeys</a></span>()</code>
<div class="block">List relevant keys.</div>
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<tr id="i9" class="rowColor">
<td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a>&lt;<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>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/hdfs/blobstore/HdfsBlobStoreImpl.html#listKeys-org.apache.hadoop.fs.Path-">listKeys</a></span>(org.apache.hadoop.fs.Path&nbsp;path)</code>&nbsp;</td>
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<td class="colFirst"><code><a href="../../../../../org/apache/storm/blobstore/BlobStoreFile.html" title="class in org.apache.storm.blobstore">BlobStoreFile</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/hdfs/blobstore/HdfsBlobStoreImpl.html#read-java.lang.String-">read</a></span>(<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>&nbsp;key)</code>
<div class="block">Get an input stream for reading a part.</div>
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<tr id="i11" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/hdfs/blobstore/HdfsBlobStoreImpl.html#shutdown--">shutdown</a></span>()</code>&nbsp;</td>
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<td class="colFirst"><code>protected int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/hdfs/blobstore/HdfsBlobStoreImpl.html#updateBlobReplication-java.lang.String-int-">updateBlobReplication</a></span>(<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>&nbsp;key,
int&nbsp;replication)</code>&nbsp;</td>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/hdfs/blobstore/HdfsBlobStoreImpl.html#updateLastBlobUpdateTime--">updateLastBlobUpdateTime</a></span>()</code>
<div class="block">Updates the last updated time of existing blobstores to the current time.</div>
</td>
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<tr id="i14" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/hdfs/blobstore/HdfsBlobStoreImpl.html#validateBlobUpdateTime--">validateBlobUpdateTime</a></span>()</code>
<div class="block">Validates that the last updated blob time of the blobstore is up to date with the current existing blobs.</div>
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<td class="colFirst"><code><a href="../../../../../org/apache/storm/blobstore/BlobStoreFile.html" title="class in org.apache.storm.blobstore">BlobStoreFile</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/storm/hdfs/blobstore/HdfsBlobStoreImpl.html#write-java.lang.String-boolean-">write</a></span>(<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>&nbsp;key,
boolean&nbsp;create)</code>
<div class="block">Get an object tied to writing the data.</div>
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<h4>BLOBSTORE_DIR_PERMISSION</h4>
<pre>public static final&nbsp;org.apache.hadoop.fs.permission.FsPermission BLOBSTORE_DIR_PERMISSION</pre>
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<h4>HdfsBlobStoreImpl</h4>
<pre>public&nbsp;HdfsBlobStoreImpl(org.apache.hadoop.fs.Path&nbsp;path,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;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>
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<pre>public&nbsp;HdfsBlobStoreImpl(org.apache.hadoop.fs.Path&nbsp;path,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<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="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;conf,
org.apache.hadoop.conf.Configuration&nbsp;hconf)
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>
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<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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<h4>listKeys</h4>
<pre>public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a>&lt;<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>&gt;&nbsp;listKeys()
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"><p>List relevant keys.</p></div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>all keys that are available for reading</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> - on any error</dd>
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<pre>protected&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a>&lt;<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>&gt;&nbsp;listKeys(org.apache.hadoop.fs.Path&nbsp;path)
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>
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<pre>public&nbsp;<a href="../../../../../org/apache/storm/blobstore/BlobStoreFile.html" title="class in org.apache.storm.blobstore">BlobStoreFile</a>&nbsp;read(<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>&nbsp;key)
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"><p>Get an input stream for reading a part.</p></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>key</code> - the key of the part to read</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the where to read the data from</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> - on any error</dd>
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<pre>public&nbsp;<a href="../../../../../org/apache/storm/blobstore/BlobStoreFile.html" title="class in org.apache.storm.blobstore">BlobStoreFile</a>&nbsp;write(<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>&nbsp;key,
boolean&nbsp;create)
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"><p>Get an object tied to writing the data.</p></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>key</code> - the key of the part to write to.</dd>
<dd><code>create</code> - whether the file needs to be new or not.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>an object that can be used to both write to, but also commit/cancel the operation.</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> - on any error</dd>
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<pre>public&nbsp;boolean&nbsp;exists(<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>&nbsp;key)</pre>
<div class="block"><p>Check if the key exists in the blob store.</p></div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>key</code> - the key to check for</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if it exists else false.</dd>
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<pre>public&nbsp;void&nbsp;deleteKey(<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>&nbsp;key)
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"><p>Delete a key from the blob store.</p></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>key</code> - the key to delete</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> - on any error</dd>
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<pre>protected&nbsp;org.apache.hadoop.fs.Path&nbsp;getKeyDir(<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>&nbsp;key)</pre>
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<pre>public&nbsp;void&nbsp;fullCleanup(long&nbsp;age)
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>
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<pre>protected&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a>&lt;<a href="../../../../../org/apache/storm/blobstore/BlobStoreFile.html" title="class in org.apache.storm.blobstore">BlobStoreFile</a>&gt;&nbsp;listBlobStoreFiles(org.apache.hadoop.fs.Path&nbsp;path)
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>
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<pre>protected&nbsp;int&nbsp;getBlobReplication(<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>&nbsp;key)
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>
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<pre>protected&nbsp;int&nbsp;updateBlobReplication(<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>&nbsp;key,
int&nbsp;replication)
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>
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<pre>protected&nbsp;void&nbsp;delete(org.apache.hadoop.fs.Path&nbsp;path)
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>
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<pre>public&nbsp;void&nbsp;shutdown()</pre>
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<pre>public&nbsp;long&nbsp;getLastBlobUpdateTime()
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"><p>Get the last update time of any blob.</p></div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the last updated time of blobs within the blobstore.</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> - on any error</dd>
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<pre>public&nbsp;void&nbsp;updateLastBlobUpdateTime()
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"><p>Updates the last updated time of existing blobstores to the current time.</p></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> - on any error</dd>
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<pre>public&nbsp;void&nbsp;validateBlobUpdateTime()
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"><p>Validates that the last updated blob time of the blobstore is up to date with the current existing blobs.</p></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> - on any error</dd>
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