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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  <html lang="en"> <head>  <title>CompactionTask (apache-cassandra API)</title> <meta name="date" content="2014-09-07"> <link rel="stylesheet" type="text/css" href="../../../../../stylesheet.css" title="Style"> </head> <body> <script type="text/javascript"> </script> <noscript> <div>JavaScript is disabled on your browser.</div> </noscript>  <div class="topNav"><a name="navbar_top">  </a><a href="#skip-navbar_top" title="Skip navigation links"></a><a name="navbar_top_firstrow">  </a> <ul class="navList" title="Navigation"> <li><a href="../../../../../overview-summary.html">Overview</a></li> <li><a href="package-summary.html">Package</a></li> <li class="navBarCell1Rev">Class</li> <li><a href="class-use/CompactionTask.html">Use</a></li> <li><a href="package-tree.html">Tree</a></li> <li><a href="../../../../../deprecated-list.html">Deprecated</a></li> <li><a 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<li>Summary: </li> <li>Nested | </li> <li><a href="#field_summary">Field</a> | </li> <li><a href="#constructor_summary">Constr</a> | </li> <li><a href="#method_summary">Method</a></li> </ul> <ul class="subNavList"> <li>Detail: </li> <li><a href="#field_detail">Field</a> | </li> <li><a href="#constructor_detail">Constr</a> | </li> <li><a href="#method_detail">Method</a></li> </ul> </div> <a name="skip-navbar_top">  </a></div>   <div class="header"> <div class="subTitle">org.apache.cassandra.db.compaction</div> <h2 title="Class CompactionTask" class="title">Class CompactionTask</h2> </div> <div class="contentContainer"> <ul class="inheritance"> <li>java.lang.Object</li> <li> <ul class="inheritance"> <li><a href="../../../../../org/apache/cassandra/utils/WrappedRunnable.html" title="class in org.apache.cassandra.utils">org.apache.cassandra.utils.WrappedRunnable</a></li> <li> <ul class="inheritance"> <li><a href="../../../../../org/apache/cassandra/io/util/DiskAwareRunnable.html" title="class in org.apache.cassandra.io.util">org.apache.cassandra.io.util.DiskAwareRunnable</a></li> <li> <ul class="inheritance"> <li><a href="../../../../../org/apache/cassandra/db/compaction/AbstractCompactionTask.html" title="class in org.apache.cassandra.db.compaction">org.apache.cassandra.db.compaction.AbstractCompactionTask</a></li> <li> <ul class="inheritance"> <li>org.apache.cassandra.db.compaction.CompactionTask</li> </ul> </li> </ul> </li> </ul> </li> </ul> </li> </ul> <div class="description"> <ul class="blockList"> <li class="blockList"> <dl> <dt>All Implemented Interfaces:</dt> <dd>java.lang.Runnable</dd> </dl> <dl> <dt>Direct Known Subclasses:</dt> <dd><a href="../../../../../org/apache/cassandra/db/compaction/LeveledCompactionTask.html" title="class in org.apache.cassandra.db.compaction">LeveledCompactionTask</a>, <a href="../../../../../org/apache/cassandra/db/compaction/SSTableSplitter.SplittingCompactionTask.html" title="class in org.apache.cassandra.db.compaction">SSTableSplitter.SplittingCompactionTask</a></dd> </dl> <hr> <br> <pre>public class <span class="strong">CompactionTask</span> extends <a href="../../../../../org/apache/cassandra/db/compaction/AbstractCompactionTask.html" title="class in org.apache.cassandra.db.compaction">AbstractCompactionTask</a></pre> </li> </ul> </div> <div class="summary"> <ul class="blockList"> <li class="blockList">  <ul class="blockList"> <li class="blockList"><a name="field_summary">  </a> <h3>Field Summary</h3> <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation"> <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>protected int</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/db/compaction/CompactionTask.html#gcBefore">gcBefore</a></strong></code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>protected static org.slf4j.Logger</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/db/compaction/CompactionTask.html#logger">logger</a></strong></code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>protected static long</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/db/compaction/CompactionTask.html#totalBytesCompacted">totalBytesCompacted</a></strong></code> </td> </tr> </table> <ul class="blockList"> <li class="blockList"><a name="fields_inherited_from_class_org.apache.cassandra.db.compaction.AbstractCompactionTask">  </a> <h3>Fields inherited from class org.apache.cassandra.db.compaction.<a href="../../../../../org/apache/cassandra/db/compaction/AbstractCompactionTask.html" title="class in org.apache.cassandra.db.compaction">AbstractCompactionTask</a></h3> <code><a href="../../../../../org/apache/cassandra/db/compaction/AbstractCompactionTask.html#cfs">cfs</a>, <a href="../../../../../org/apache/cassandra/db/compaction/AbstractCompactionTask.html#compactionType">compactionType</a>, <a href="../../../../../org/apache/cassandra/db/compaction/AbstractCompactionTask.html#isUserDefined">isUserDefined</a>, <a href="../../../../../org/apache/cassandra/db/compaction/AbstractCompactionTask.html#sstables">sstables</a></code></li> </ul> </li> </ul>  <ul class="blockList"> <li class="blockList"><a name="constructor_summary">  </a> <h3>Constructor Summary</h3> <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation"> <caption><span>Constructors</span><span class="tabEnd"> </span></caption> <tr> <th class="colOne" scope="col">Constructor and Description</th> </tr> <tr class="altColor"> <td class="colOne"><code><strong><a href="../../../../../org/apache/cassandra/db/compaction/CompactionTask.html#CompactionTask(org.apache.cassandra.db.ColumnFamilyStore,%20java.lang.Iterable,%20int,%20boolean)">CompactionTask</a></strong>(<a href="../../../../../org/apache/cassandra/db/ColumnFamilyStore.html" title="class in org.apache.cassandra.db">ColumnFamilyStore</a> cfs, java.lang.Iterable<<a href="../../../../../org/apache/cassandra/io/sstable/SSTableReader.html" title="class in org.apache.cassandra.io.sstable">SSTableReader</a>> sstables, int gcBefore, boolean offline)</code> </td> </tr> </table> </li> </ul>  <ul class="blockList"> <li class="blockList"><a name="method_summary">  </a> <h3>Method Summary</h3> <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> <caption><span>Methods</span><span class="tabEnd"> </span></caption> <tr> <th class="colFirst" scope="col">Modifier and Type</th> <th class="colLast" scope="col">Method and Description</th> </tr> <tr class="altColor"> <td class="colFirst"><code>static long</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/db/compaction/CompactionTask.html#addToTotalBytesCompacted(long)">addToTotalBytesCompacted</a></strong>(long bytesCompacted)</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>protected int</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/db/compaction/CompactionTask.html#executeInternal(org.apache.cassandra.db.compaction.CompactionManager.CompactionExecutorStatsCollector)">executeInternal</a></strong>(<a href="../../../../../org/apache/cassandra/db/compaction/CompactionManager.CompactionExecutorStatsCollector.html" title="interface in org.apache.cassandra.db.compaction">CompactionManager.CompactionExecutorStatsCollector</a> collector)</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>protected <a href="../../../../../org/apache/cassandra/db/compaction/CompactionController.html" title="class in org.apache.cassandra.db.compaction">CompactionController</a></code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/db/compaction/CompactionTask.html#getCompactionController(java.util.Set)">getCompactionController</a></strong>(java.util.Set<<a href="../../../../../org/apache/cassandra/io/sstable/SSTableReader.html" title="class in org.apache.cassandra.io.sstable">SSTableReader</a>> toCompact)</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>long</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/db/compaction/CompactionTask.html#getExpectedWriteSize()">getExpectedWriteSize</a></strong>()</code> <div class="block">Get expected write size to determine which disk to use for this task.</div> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>protected int</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/db/compaction/CompactionTask.html#getLevel()">getLevel</a></strong>()</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>static long</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/db/compaction/CompactionTask.html#getMaxDataAge(java.util.Collection)">getMaxDataAge</a></strong>(java.util.Collection<<a href="../../../../../org/apache/cassandra/io/sstable/SSTableReader.html" title="class in org.apache.cassandra.io.sstable">SSTableReader</a>> sstables)</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>protected boolean</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/db/compaction/CompactionTask.html#newSSTableSegmentThresholdReached(org.apache.cassandra.io.sstable.SSTableWriter)">newSSTableSegmentThresholdReached</a></strong>(<a href="../../../../../org/apache/cassandra/io/sstable/SSTableWriter.html" title="class in org.apache.cassandra.io.sstable">SSTableWriter</a> writer)</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>protected boolean</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/db/compaction/CompactionTask.html#partialCompactionsAcceptable()">partialCompactionsAcceptable</a></strong>()</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>boolean</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/db/compaction/CompactionTask.html#reduceScopeForLimitedSpace()">reduceScopeForLimitedSpace</a></strong>()</code> <div class="block">Called if no disk is available with free space for the full write size.</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>protected void</code></td> <td class="colLast"><code><strong><a href="../../../../../org/apache/cassandra/db/compaction/CompactionTask.html#runWith(java.io.File)">runWith</a></strong>(java.io.File sstableDirectory)</code> <div class="block">For internal use and testing only.</div> </td> </tr> </table> <ul class="blockList"> <li class="blockList"><a name="methods_inherited_from_class_org.apache.cassandra.db.compaction.AbstractCompactionTask">  </a> <h3>Methods inherited from class org.apache.cassandra.db.compaction.<a href="../../../../../org/apache/cassandra/db/compaction/AbstractCompactionTask.html" title="class in org.apache.cassandra.db.compaction">AbstractCompactionTask</a></h3> <code><a href="../../../../../org/apache/cassandra/db/compaction/AbstractCompactionTask.html#execute(org.apache.cassandra.db.compaction.CompactionManager.CompactionExecutorStatsCollector)">execute</a>, <a href="../../../../../org/apache/cassandra/db/compaction/AbstractCompactionTask.html#getDirectories()">getDirectories</a>, <a 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logger</pre> </li> </ul> <a name="gcBefore">  </a> <ul class="blockList"> <li class="blockList"> <h4>gcBefore</h4> <pre>protected final int gcBefore</pre> </li> </ul> <a name="totalBytesCompacted">  </a> <ul class="blockListLast"> <li class="blockList"> <h4>totalBytesCompacted</h4> <pre>protected static long totalBytesCompacted</pre> </li> </ul> </li> </ul>  <ul class="blockList"> <li class="blockList"><a name="constructor_detail">  </a> <h3>Constructor Detail</h3> <a name="CompactionTask(org.apache.cassandra.db.ColumnFamilyStore, java.lang.Iterable, int, boolean)">  </a> <ul class="blockListLast"> <li class="blockList"> <h4>CompactionTask</h4> <pre>public CompactionTask(<a href="../../../../../org/apache/cassandra/db/ColumnFamilyStore.html" title="class in org.apache.cassandra.db">ColumnFamilyStore</a> cfs, java.lang.Iterable<<a href="../../../../../org/apache/cassandra/io/sstable/SSTableReader.html" title="class in org.apache.cassandra.io.sstable">SSTableReader</a>> sstables, int gcBefore, boolean offline)</pre> </li> </ul> </li> </ul>  <ul class="blockList"> <li class="blockList"><a name="method_detail">  </a> <h3>Method Detail</h3> <a name="addToTotalBytesCompacted(long)">  </a> <ul class="blockList"> <li class="blockList"> <h4>addToTotalBytesCompacted</h4> <pre>public static long addToTotalBytesCompacted(long bytesCompacted)</pre> </li> </ul> <a name="executeInternal(org.apache.cassandra.db.compaction.CompactionManager.CompactionExecutorStatsCollector)">  </a> <ul class="blockList"> <li class="blockList"> <h4>executeInternal</h4> <pre>protected int executeInternal(<a href="../../../../../org/apache/cassandra/db/compaction/CompactionManager.CompactionExecutorStatsCollector.html" title="interface in org.apache.cassandra.db.compaction">CompactionManager.CompactionExecutorStatsCollector</a> collector)</pre> <dl> <dt><strong>Specified by:</strong></dt> <dd><code><a href="../../../../../org/apache/cassandra/db/compaction/AbstractCompactionTask.html#executeInternal(org.apache.cassandra.db.compaction.CompactionManager.CompactionExecutorStatsCollector)">executeInternal</a></code> in class <code><a href="../../../../../org/apache/cassandra/db/compaction/AbstractCompactionTask.html" title="class in org.apache.cassandra.db.compaction">AbstractCompactionTask</a></code></dd> </dl> </li> </ul> <a name="getExpectedWriteSize()">  </a> <ul class="blockList"> <li class="blockList"> <h4>getExpectedWriteSize</h4> <pre>public long getExpectedWriteSize()</pre> <div class="block"><strong>Description copied from class: <code><a href="../../../../../org/apache/cassandra/io/util/DiskAwareRunnable.html#getExpectedWriteSize()">DiskAwareRunnable</a></code></strong></div> <div class="block">Get expected write size to determine which disk to use for this task.</div> <dl> <dt><strong>Specified by:</strong></dt> <dd><code><a href="../../../../../org/apache/cassandra/io/util/DiskAwareRunnable.html#getExpectedWriteSize()">getExpectedWriteSize</a></code> in class <code><a href="../../../../../org/apache/cassandra/io/util/DiskAwareRunnable.html" title="class in org.apache.cassandra.io.util">DiskAwareRunnable</a></code></dd> <dt><span class="strong">Returns:</span></dt><dd>expected size in bytes this task will write to disk.</dd></dl> </li> </ul> <a name="reduceScopeForLimitedSpace()">  </a> <ul class="blockList"> <li class="blockList"> <h4>reduceScopeForLimitedSpace</h4> <pre>public boolean reduceScopeForLimitedSpace()</pre> <div class="block"><strong>Description copied from class: <code><a href="../../../../../org/apache/cassandra/io/util/DiskAwareRunnable.html#reduceScopeForLimitedSpace()">DiskAwareRunnable</a></code></strong></div> <div class="block">Called if no disk is available with free space for the full write size.</div> <dl> <dt><strong>Overrides:</strong></dt> <dd><code><a href="../../../../../org/apache/cassandra/io/util/DiskAwareRunnable.html#reduceScopeForLimitedSpace()">reduceScopeForLimitedSpace</a></code> in class <code><a href="../../../../../org/apache/cassandra/io/util/DiskAwareRunnable.html" title="class in org.apache.cassandra.io.util">DiskAwareRunnable</a></code></dd> <dt><span class="strong">Returns:</span></dt><dd>true if the scope of the task was successfully reduced.</dd></dl> </li> </ul> <a name="runWith(java.io.File)">  </a> <ul class="blockList"> <li class="blockList"> <h4>runWith</h4> <pre>protected void runWith(java.io.File sstableDirectory) throws java.lang.Exception</pre> <div class="block">For internal use and testing only. 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Caller is in charge of marking/unmarking the sstables as compacting.</div> <dl> <dt><strong>Specified by:</strong></dt> <dd><code><a href="../../../../../org/apache/cassandra/io/util/DiskAwareRunnable.html#runWith(java.io.File)">runWith</a></code> in class <code><a href="../../../../../org/apache/cassandra/io/util/DiskAwareRunnable.html" title="class in org.apache.cassandra.io.util">DiskAwareRunnable</a></code></dd> <dt><span class="strong">Parameters:</span></dt><dd><code>sstableDirectory</code> - sstable directory to work on</dd> <dt><span class="strong">Throws:</span></dt> <dd><code>java.lang.Exception</code></dd></dl> </li> </ul> <a name="getLevel()">  </a> <ul class="blockList"> <li class="blockList"> <h4>getLevel</h4> <pre>protected int getLevel()</pre> </li> </ul> <a name="getCompactionController(java.util.Set)">  </a> <ul class="blockList"> <li class="blockList"> <h4>getCompactionController</h4> <pre>protected <a href="../../../../../org/apache/cassandra/db/compaction/CompactionController.html" title="class in org.apache.cassandra.db.compaction">CompactionController</a> getCompactionController(java.util.Set<<a href="../../../../../org/apache/cassandra/io/sstable/SSTableReader.html" title="class in org.apache.cassandra.io.sstable">SSTableReader</a>> toCompact)</pre> </li> </ul> <a name="partialCompactionsAcceptable()">  </a> <ul class="blockList"> <li class="blockList"> <h4>partialCompactionsAcceptable</h4> <pre>protected boolean partialCompactionsAcceptable()</pre> </li> </ul> <a name="newSSTableSegmentThresholdReached(org.apache.cassandra.io.sstable.SSTableWriter)">  </a> <ul class="blockList"> <li class="blockList"> <h4>newSSTableSegmentThresholdReached</h4> <pre>protected boolean newSSTableSegmentThresholdReached(<a href="../../../../../org/apache/cassandra/io/sstable/SSTableWriter.html" title="class in org.apache.cassandra.io.sstable">SSTableWriter</a> writer)</pre> </li> </ul> <a name="getMaxDataAge(java.util.Collection)">  </a> <ul class="blockListLast"> <li class="blockList"> <h4>getMaxDataAge</h4> <pre>public static long getMaxDataAge(java.util.Collection<<a href="../../../../../org/apache/cassandra/io/sstable/SSTableReader.html" title="class in org.apache.cassandra.io.sstable">SSTableReader</a>> sstables)</pre> </li> </ul> </li> </ul> </li> </ul> </div> </div>   <div class="bottomNav"><a name="navbar_bottom">  </a><a href="#skip-navbar_bottom" title="Skip navigation links"></a><a name="navbar_bottom_firstrow">  </a> <ul class="navList" title="Navigation"> <li><a href="../../../../../overview-summary.html">Overview</a></li> <li><a href="package-summary.html">Package</a></li> <li class="navBarCell1Rev">Class</li> <li><a href="class-use/CompactionTask.html">Use</a></li> <li><a href="package-tree.html">Tree</a></li> <li><a href="../../../../../deprecated-list.html">Deprecated</a></li> <li><a href="../../../../../index-all.html">Index</a></li> <li><a href="../../../../../help-doc.html">Help</a></li> </ul> </div> <div class="subNav"> <ul class="navList"> <li><a href="../../../../../org/apache/cassandra/db/compaction/CompactionManagerMBean.html" title="interface in org.apache.cassandra.db.compaction"><span class="strong">Prev Class</span></a></li> <li><a href="../../../../../org/apache/cassandra/db/compaction/ICompactionScanner.html" title="interface in org.apache.cassandra.db.compaction"><span class="strong">Next Class</span></a></li> </ul> <ul class="navList"> <li><a href="../../../../../index.html?org/apache/cassandra/db/compaction/CompactionTask.html" target="_top">Frames</a></li> <li><a href="CompactionTask.html" target="_top">No Frames</a></li> </ul> <ul class="navList" id="allclasses_navbar_bottom"> <li><a href="../../../../../allclasses-noframe.html">All Classes</a></li> </ul> <div> <script type="text/javascript"> </script> </div> <div> <ul class="subNavList"> <li>Summary: </li> <li>Nested | </li> <li><a href="#field_summary">Field</a> | </li> <li><a href="#constructor_summary">Constr</a> | </li> <li><a href="#method_summary">Method</a></li> </ul> <ul class="subNavList"> <li>Detail: </li> <li><a href="#field_detail">Field</a> | </li> <li><a href="#constructor_detail">Constr</a> | </li> <li><a href="#method_detail">Method</a></li> </ul> </div> <a name="skip-navbar_bottom">  </a></div>  <p class="legalCopy"><small>Copyright © 2014 The Apache Software Foundation</small></p> </body> </html>