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<div class="subTitle">org.apache.hadoop.fs</div>
<h2 title="Class FSDataOutputStream" class="title">Class FSDataOutputStream</h2>
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<li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li>
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<ul class="inheritance">
<li><a href="https://docs.oracle.com/javase/8/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">java.io.OutputStream</a></li>
<li>
<ul class="inheritance">
<li><a href="https://docs.oracle.com/javase/8/docs/api/java/io/FilterOutputStream.html?is-external=true" title="class or interface in java.io">java.io.FilterOutputStream</a></li>
<li>
<ul class="inheritance">
<li><a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutputStream.html?is-external=true" title="class or interface in java.io">java.io.DataOutputStream</a></li>
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<li>org.apache.hadoop.fs.FSDataOutputStream</li>
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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/io/DataOutput.html?is-external=true" title="class or interface in java.io">DataOutput</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/io/Flushable.html?is-external=true" title="class or interface in java.io">Flushable</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>, <a href="../../../../org/apache/hadoop/fs/Abortable.html" title="interface in org.apache.hadoop.fs">Abortable</a>, <a href="../../../../org/apache/hadoop/fs/CanSetDropBehind.html" title="interface in org.apache.hadoop.fs">CanSetDropBehind</a>, <a href="../../../../org/apache/hadoop/fs/statistics/IOStatisticsSource.html" title="interface in org.apache.hadoop.fs.statistics">IOStatisticsSource</a>, <a href="../../../../org/apache/hadoop/fs/StreamCapabilities.html" title="interface in org.apache.hadoop.fs">StreamCapabilities</a>, <a href="../../../../org/apache/hadoop/fs/Syncable.html" title="interface in org.apache.hadoop.fs">Syncable</a></dd>
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<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../../org/apache/hadoop/fs/crypto/CryptoFSDataOutputStream.html" title="class in org.apache.hadoop.fs.crypto">CryptoFSDataOutputStream</a></dd>
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<pre>@InterfaceAudience.Public
@InterfaceStability.Stable
public class <span class="typeNameLabel">FSDataOutputStream</span>
extends <a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutputStream.html?is-external=true" title="class or interface in java.io">DataOutputStream</a>
implements <a href="../../../../org/apache/hadoop/fs/Syncable.html" title="interface in org.apache.hadoop.fs">Syncable</a>, <a href="../../../../org/apache/hadoop/fs/CanSetDropBehind.html" title="interface in org.apache.hadoop.fs">CanSetDropBehind</a>, <a href="../../../../org/apache/hadoop/fs/StreamCapabilities.html" title="interface in org.apache.hadoop.fs">StreamCapabilities</a>, <a href="../../../../org/apache/hadoop/fs/statistics/IOStatisticsSource.html" title="interface in org.apache.hadoop.fs.statistics">IOStatisticsSource</a>, <a href="../../../../org/apache/hadoop/fs/Abortable.html" title="interface in org.apache.hadoop.fs">Abortable</a></pre>
<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>
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<h3>Nested classes/interfaces inherited from interface&nbsp;org.apache.hadoop.fs.<a href="../../../../org/apache/hadoop/fs/StreamCapabilities.html" title="interface in org.apache.hadoop.fs">StreamCapabilities</a></h3>
<code><a href="../../../../org/apache/hadoop/fs/StreamCapabilities.StreamCapability.html" title="enum in org.apache.hadoop.fs">StreamCapabilities.StreamCapability</a></code></li>
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<h3>Nested classes/interfaces inherited from interface&nbsp;org.apache.hadoop.fs.<a href="../../../../org/apache/hadoop/fs/Abortable.html" title="interface in org.apache.hadoop.fs">Abortable</a></h3>
<code><a href="../../../../org/apache/hadoop/fs/Abortable.AbortableResult.html" title="interface in org.apache.hadoop.fs">Abortable.AbortableResult</a></code></li>
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<h3>Fields inherited from class&nbsp;java.io.<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutputStream.html?is-external=true" title="class or interface in java.io">DataOutputStream</a></h3>
<code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutputStream.html?is-external=true#written" title="class or interface in java.io">written</a></code></li>
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<h3>Fields inherited from class&nbsp;java.io.<a href="https://docs.oracle.com/javase/8/docs/api/java/io/FilterOutputStream.html?is-external=true" title="class or interface in java.io">FilterOutputStream</a></h3>
<code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/FilterOutputStream.html?is-external=true#out" title="class or interface in java.io">out</a></code></li>
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<h3>Fields inherited from interface&nbsp;org.apache.hadoop.fs.<a href="../../../../org/apache/hadoop/fs/StreamCapabilities.html" title="interface in org.apache.hadoop.fs">StreamCapabilities</a></h3>
<code><a href="../../../../org/apache/hadoop/fs/StreamCapabilities.html#ABORTABLE_STREAM">ABORTABLE_STREAM</a>, <a href="../../../../org/apache/hadoop/fs/StreamCapabilities.html#DROPBEHIND">DROPBEHIND</a>, <a href="../../../../org/apache/hadoop/fs/StreamCapabilities.html#HFLUSH">HFLUSH</a>, <a href="../../../../org/apache/hadoop/fs/StreamCapabilities.html#HSYNC">HSYNC</a>, <a href="../../../../org/apache/hadoop/fs/StreamCapabilities.html#IOSTATISTICS">IOSTATISTICS</a>, <a href="../../../../org/apache/hadoop/fs/StreamCapabilities.html#PREADBYTEBUFFER">PREADBYTEBUFFER</a>, <a href="../../../../org/apache/hadoop/fs/StreamCapabilities.html#READAHEAD">READAHEAD</a>, <a href="../../../../org/apache/hadoop/fs/StreamCapabilities.html#READBYTEBUFFER">READBYTEBUFFER</a>, <a href="../../../../org/apache/hadoop/fs/StreamCapabilities.html#UNBUFFER">UNBUFFER</a></code></li>
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<th class="colOne" scope="col">Constructor and Description</th>
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<tr class="altColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/fs/FSDataOutputStream.html#FSDataOutputStream-java.io.OutputStream-org.apache.hadoop.fs.FileSystem.Statistics-">FSDataOutputStream</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</a>&nbsp;out,
<a href="../../../../org/apache/hadoop/fs/FileSystem.Statistics.html" title="class in org.apache.hadoop.fs">FileSystem.Statistics</a>&nbsp;stats)</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/fs/FSDataOutputStream.html#FSDataOutputStream-java.io.OutputStream-org.apache.hadoop.fs.FileSystem.Statistics-long-">FSDataOutputStream</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</a>&nbsp;out,
<a href="../../../../org/apache/hadoop/fs/FileSystem.Statistics.html" title="class in org.apache.hadoop.fs">FileSystem.Statistics</a>&nbsp;stats,
long&nbsp;startPosition)</code>&nbsp;</td>
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<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><a href="../../../../org/apache/hadoop/fs/Abortable.AbortableResult.html" title="interface in org.apache.hadoop.fs">Abortable.AbortableResult</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/fs/FSDataOutputStream.html#abort--">abort</a></span>()</code>
<div class="block">Invoke <code>abort()</code> on the wrapped stream if it
is Abortable, otherwise raise an
<code>UnsupportedOperationException</code>.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/fs/FSDataOutputStream.html#close--">close</a></span>()</code>
<div class="block">Close the underlying output stream.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="../../../../org/apache/hadoop/fs/statistics/IOStatistics.html" title="interface in org.apache.hadoop.fs.statistics">IOStatistics</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/fs/FSDataOutputStream.html#getIOStatistics--">getIOStatistics</a></span>()</code>
<div class="block">Get the IO Statistics of the nested stream, falling back to
empty statistics if the stream does not implement the interface
<a href="../../../../org/apache/hadoop/fs/statistics/IOStatisticsSource.html" title="interface in org.apache.hadoop.fs.statistics"><code>IOStatisticsSource</code></a>.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/fs/FSDataOutputStream.html#getPos--">getPos</a></span>()</code>
<div class="block">Get the current position in the output stream.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/fs/FSDataOutputStream.html#hasCapability-java.lang.String-">hasCapability</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;capability)</code>
<div class="block">Query the stream for a specific capability.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/fs/FSDataOutputStream.html#hflush--">hflush</a></span>()</code>
<div class="block">Flush out the data in client's user buffer.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/fs/FSDataOutputStream.html#hsync--">hsync</a></span>()</code>
<div class="block">Similar to posix fsync, flush out the data in client's user buffer
all the way to the disk device (but the disk may have it in its cache).</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/fs/FSDataOutputStream.html#setDropBehind-java.lang.Boolean-">setDropBehind</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a>&nbsp;dropBehind)</code>
<div class="block">Configure whether the stream should drop the cache.</div>
</td>
</tr>
<tr id="i8" 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/fs/FSDataOutputStream.html#toString--">toString</a></span>()</code>&nbsp;</td>
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<h3>Methods inherited from class&nbsp;java.io.<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutputStream.html?is-external=true" title="class or interface in java.io">DataOutputStream</a></h3>
<code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutputStream.html?is-external=true#flush--" title="class or interface in java.io">flush</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutputStream.html?is-external=true#size--" title="class or interface in java.io">size</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutputStream.html?is-external=true#write-byte:A-int-int-" title="class or interface in java.io">write</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutputStream.html?is-external=true#write-int-" title="class or interface in java.io">write</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutputStream.html?is-external=true#writeBoolean-boolean-" title="class or interface in java.io">writeBoolean</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutputStream.html?is-external=true#writeByte-int-" title="class or interface in java.io">writeByte</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutputStream.html?is-external=true#writeBytes-java.lang.String-" title="class or interface in java.io">writeBytes</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutputStream.html?is-external=true#writeChar-int-" title="class or interface in java.io">writeChar</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutputStream.html?is-external=true#writeChars-java.lang.String-" title="class or interface in java.io">writeChars</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutputStream.html?is-external=true#writeDouble-double-" title="class or interface in java.io">writeDouble</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutputStream.html?is-external=true#writeFloat-float-" title="class or interface in java.io">writeFloat</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutputStream.html?is-external=true#writeInt-int-" title="class or interface in java.io">writeInt</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutputStream.html?is-external=true#writeLong-long-" title="class or interface in java.io">writeLong</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutputStream.html?is-external=true#writeShort-int-" title="class or interface in java.io">writeShort</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutputStream.html?is-external=true#writeUTF-java.lang.String-" title="class or interface in java.io">writeUTF</a></code></li>
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<h3>Methods inherited from class&nbsp;java.io.<a href="https://docs.oracle.com/javase/8/docs/api/java/io/FilterOutputStream.html?is-external=true" title="class or interface in java.io">FilterOutputStream</a></h3>
<code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/FilterOutputStream.html?is-external=true#write-byte:A-" title="class or interface in java.io">write</a></code></li>
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<h3>Methods inherited from class&nbsp;java.lang.<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></h3>
<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li>
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<h3>Methods inherited from interface&nbsp;java.io.<a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutput.html?is-external=true" title="class or interface in java.io">DataOutput</a></h3>
<code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/DataOutput.html?is-external=true#write-byte:A-" title="class or interface in java.io">write</a></code></li>
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<h4>FSDataOutputStream</h4>
<pre>public&nbsp;FSDataOutputStream(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</a>&nbsp;out,
<a href="../../../../org/apache/hadoop/fs/FileSystem.Statistics.html" title="class in org.apache.hadoop.fs">FileSystem.Statistics</a>&nbsp;stats)</pre>
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<pre>public&nbsp;FSDataOutputStream(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</a>&nbsp;out,
<a href="../../../../org/apache/hadoop/fs/FileSystem.Statistics.html" title="class in org.apache.hadoop.fs">FileSystem.Statistics</a>&nbsp;stats,
long&nbsp;startPosition)</pre>
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<h4>getPos</h4>
<pre>public&nbsp;long&nbsp;getPos()</pre>
<div class="block">Get the current position in the output stream.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the current position in the output stream</dd>
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<h4>close</h4>
<pre>public&nbsp;void&nbsp;close()
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 the underlying output stream.</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>&nbsp;in interface&nbsp;<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>&nbsp;in interface&nbsp;<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><a href="https://docs.oracle.com/javase/8/docs/api/java/io/FilterOutputStream.html?is-external=true#close--" title="class or interface in java.io">close</a></code>&nbsp;in class&nbsp;<code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/FilterOutputStream.html?is-external=true" title="class or interface in java.io">FilterOutputStream</a></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>
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<h4>toString</h4>
<pre>public&nbsp;<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;toString()</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a></code>&nbsp;in class&nbsp;<code><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></code></dd>
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<h4>hasCapability</h4>
<pre>public&nbsp;boolean&nbsp;hasCapability(<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;capability)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../org/apache/hadoop/fs/StreamCapabilities.html#hasCapability-java.lang.String-">StreamCapabilities</a></code></span></div>
<div class="block">Query the stream for a specific capability.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/hadoop/fs/StreamCapabilities.html#hasCapability-java.lang.String-">hasCapability</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../org/apache/hadoop/fs/StreamCapabilities.html" title="interface in org.apache.hadoop.fs">StreamCapabilities</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>capability</code> - string to query the stream support for.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>True if the stream supports capability.</dd>
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<pre>public&nbsp;void&nbsp;hflush()
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<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../org/apache/hadoop/fs/Syncable.html#hflush--">Syncable</a></code></span></div>
<div class="block">Flush out the data in client's user buffer. After the return of
this call, new readers will see the data.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/hadoop/fs/Syncable.html#hflush--">hflush</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../org/apache/hadoop/fs/Syncable.html" title="interface in org.apache.hadoop.fs">Syncable</a></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> - if any error occurs</dd>
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<h4>hsync</h4>
<pre>public&nbsp;void&nbsp;hsync()
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<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../org/apache/hadoop/fs/Syncable.html#hsync--">Syncable</a></code></span></div>
<div class="block">Similar to posix fsync, flush out the data in client's user buffer
all the way to the disk device (but the disk may have it in its cache).</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/hadoop/fs/Syncable.html#hsync--">hsync</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../org/apache/hadoop/fs/Syncable.html" title="interface in org.apache.hadoop.fs">Syncable</a></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> - if error occurs</dd>
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<pre>public&nbsp;void&nbsp;setDropBehind(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a>&nbsp;dropBehind)
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"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../org/apache/hadoop/fs/CanSetDropBehind.html#setDropBehind-java.lang.Boolean-">CanSetDropBehind</a></code></span></div>
<div class="block">Configure whether the stream should drop the cache.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/hadoop/fs/CanSetDropBehind.html#setDropBehind-java.lang.Boolean-">setDropBehind</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../org/apache/hadoop/fs/CanSetDropBehind.html" title="interface in org.apache.hadoop.fs">CanSetDropBehind</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>dropBehind</code> - Whether to drop the cache. null means to use the
default value.</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> - If there was an error changing the dropBehind
setting.
UnsupportedOperationException If this stream doesn't support
setting the drop-behind.</dd>
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<pre>public&nbsp;<a href="../../../../org/apache/hadoop/fs/statistics/IOStatistics.html" title="interface in org.apache.hadoop.fs.statistics">IOStatistics</a>&nbsp;getIOStatistics()</pre>
<div class="block">Get the IO Statistics of the nested stream, falling back to
empty statistics if the stream does not implement the interface
<a href="../../../../org/apache/hadoop/fs/statistics/IOStatisticsSource.html" title="interface in org.apache.hadoop.fs.statistics"><code>IOStatisticsSource</code></a>.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/hadoop/fs/statistics/IOStatisticsSource.html#getIOStatistics--">getIOStatistics</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../org/apache/hadoop/fs/statistics/IOStatisticsSource.html" title="interface in org.apache.hadoop.fs.statistics">IOStatisticsSource</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>an IOStatistics instance.</dd>
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<h4>abort</h4>
<pre>public&nbsp;<a href="../../../../org/apache/hadoop/fs/Abortable.AbortableResult.html" title="interface in org.apache.hadoop.fs">Abortable.AbortableResult</a>&nbsp;abort()</pre>
<div class="block">Invoke <code>abort()</code> on the wrapped stream if it
is Abortable, otherwise raise an
<code>UnsupportedOperationException</code>.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../org/apache/hadoop/fs/Abortable.html#abort--">abort</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../org/apache/hadoop/fs/Abortable.html" title="interface in org.apache.hadoop.fs">Abortable</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the result.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/UnsupportedOperationException.html?is-external=true" title="class or interface in java.lang">UnsupportedOperationException</a></code> - if not available.</dd>
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