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<div class="sub-title"><span class="package-label-in-type">Package</span>&nbsp;<a href="package-summary.html">org.apache.hadoop.hbase.regionserver</a></div>
<h1 title="Class MemStoreCompactor" class="title">Class MemStoreCompactor</h1>
</div>
<div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">java.lang.Object</a>
<div class="inheritance">org.apache.hadoop.hbase.regionserver.MemStoreCompactor</div>
</div>
<section class="class-description" id="class-description">
<hr>
<div class="type-signature"><span class="annotations">@Private
</span><span class="modifiers">public class </span><span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/MemStoreCompactor.html#line-42">MemStoreCompactor</a></span>
<span class="extends-implements">extends <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></span></div>
<div class="block">The ongoing MemStore Compaction manager, dispatches a solo running compaction and interrupts the
compaction if requested. The compaction is interrupted and stopped by CompactingMemStore, for
example when another compaction needs to be started. Prior to compaction the MemStoreCompactor
evaluates the compacting ratio and aborts the compaction if it is not worthy. The MemStoreScanner
is used to traverse the compaction pipeline. The MemStoreScanner is included in internal store
scanner, where all compaction logic is implemented. Threads safety: It is assumed that the
compaction pipeline is immutable, therefore no special synchronization is required.</div>
</section>
<section class="summary">
<ul class="summary-list">
<!-- =========== FIELD SUMMARY =========== -->
<li>
<section class="field-summary" id="field-summary">
<h2>Field Summary</h2>
<div class="caption"><span>Fields</span></div>
<div class="summary-table three-column-summary">
<div class="table-header col-first">Modifier and Type</div>
<div class="table-header col-second">Field</div>
<div class="table-header col-last">Description</div>
<div class="col-first even-row-color"><code>private <a href="CompactingMemStore.html" title="class in org.apache.hadoop.hbase.regionserver">CompactingMemStore</a></code></div>
<div class="col-second even-row-color"><code><a href="#compactingMemStore" class="member-name-link">compactingMemStore</a></code></div>
<div class="col-last even-row-color">&nbsp;</div>
<div class="col-first odd-row-color"><code>private final int</code></div>
<div class="col-second odd-row-color"><code><a href="#compactionKVMax" class="member-name-link">compactionKVMax</a></code></div>
<div class="col-last odd-row-color">&nbsp;</div>
<div class="col-first even-row-color"><code>static final long</code></div>
<div class="col-second even-row-color"><code><a href="#DEEP_OVERHEAD" class="member-name-link">DEEP_OVERHEAD</a></code></div>
<div class="col-last even-row-color">&nbsp;</div>
<div class="col-first odd-row-color"><code>private final <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/concurrent/atomic/AtomicBoolean.html" title="class or interface in java.util.concurrent.atomic" class="external-link">AtomicBoolean</a></code></div>
<div class="col-second odd-row-color"><code><a href="#isInterrupted" class="member-name-link">isInterrupted</a></code></div>
<div class="col-last odd-row-color">&nbsp;</div>
<div class="col-first even-row-color"><code>private static final org.slf4j.Logger</code></div>
<div class="col-second even-row-color"><code><a href="#LOG" class="member-name-link">LOG</a></code></div>
<div class="col-last even-row-color">&nbsp;</div>
<div class="col-first odd-row-color"><code>private <a href="MemStoreCompactionStrategy.html" title="class in org.apache.hadoop.hbase.regionserver">MemStoreCompactionStrategy</a></code></div>
<div class="col-second odd-row-color"><code><a href="#strategy" class="member-name-link">strategy</a></code></div>
<div class="col-last odd-row-color">&nbsp;</div>
<div class="col-first even-row-color"><code>private <a href="VersionedSegmentsList.html" title="class in org.apache.hadoop.hbase.regionserver">VersionedSegmentsList</a></code></div>
<div class="col-second even-row-color"><code><a href="#versionedList" class="member-name-link">versionedList</a></code></div>
<div class="col-last even-row-color">&nbsp;</div>
</div>
</section>
</li>
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<section class="constructor-summary" id="constructor-summary">
<h2>Constructor Summary</h2>
<div class="caption"><span>Constructors</span></div>
<div class="summary-table two-column-summary">
<div class="table-header col-first">Constructor</div>
<div class="table-header col-last">Description</div>
<div class="col-constructor-name even-row-color"><code><a href="#%3Cinit%3E(org.apache.hadoop.hbase.regionserver.CompactingMemStore,org.apache.hadoop.hbase.MemoryCompactionPolicy)" class="member-name-link">MemStoreCompactor</a><wbr>(<a href="CompactingMemStore.html" title="class in org.apache.hadoop.hbase.regionserver">CompactingMemStore</a>&nbsp;compactingMemStore,
<a href="../MemoryCompactionPolicy.html" title="enum class in org.apache.hadoop.hbase">MemoryCompactionPolicy</a>&nbsp;compactionPolicy)</code></div>
<div class="col-last even-row-color">&nbsp;</div>
</div>
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<!-- ========== METHOD SUMMARY =========== -->
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<h2>Method Summary</h2>
<div id="method-summary-table">
<div class="table-tabs" role="tablist" aria-orientation="horizontal"><button id="method-summary-table-tab0" role="tab" aria-selected="true" aria-controls="method-summary-table.tabpanel" tabindex="0" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table', 3)" class="active-table-tab">All Methods</button><button id="method-summary-table-tab2" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab2', 3)" class="table-tab">Instance Methods</button><button id="method-summary-table-tab4" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab4', 3)" class="table-tab">Concrete Methods</button></div>
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<div class="table-header col-first">Modifier and Type</div>
<div class="table-header col-second">Method</div>
<div class="table-header col-last">Description</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>private <a href="ImmutableSegment.html" title="class in org.apache.hadoop.hbase.regionserver">ImmutableSegment</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#createSubstitution(org.apache.hadoop.hbase.regionserver.MemStoreCompactionStrategy.Action)" class="member-name-link">createSubstitution</a><wbr>(<a href="MemStoreCompactionStrategy.Action.html" title="enum class in org.apache.hadoop.hbase.regionserver">MemStoreCompactionStrategy.Action</a>&nbsp;action)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">---------------------------------------------------------------------- Creation of the
ImmutableSegment either by merge or copy-compact of the segments of the pipeline, based on the
Compactor Iterator.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>private void</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#doCompaction()" class="member-name-link">doCompaction</a>()</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">---------------------------------------------------------------------- The worker thread
performs the compaction asynchronously.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>(package private) void</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#initiateCompactionStrategy(org.apache.hadoop.hbase.MemoryCompactionPolicy,org.apache.hadoop.conf.Configuration,java.lang.String)" class="member-name-link">initiateCompactionStrategy</a><wbr>(<a href="../MemoryCompactionPolicy.html" title="enum class in org.apache.hadoop.hbase">MemoryCompactionPolicy</a>&nbsp;compType,
org.apache.hadoop.conf.Configuration&nbsp;configuration,
<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;cfName)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">&nbsp;</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>private void</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#releaseResources()" class="member-name-link">releaseResources</a>()</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">---------------------------------------------------------------------- Reset the interruption
indicator and clear the pointers in order to allow good garbage collection</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#resetStats()" class="member-name-link">resetStats</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">&nbsp;</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>boolean</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#start()" class="member-name-link">start</a>()</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">---------------------------------------------------------------------- The request to dispatch
the compaction asynchronous task.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>void</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#stop()" class="member-name-link">stop</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">---------------------------------------------------------------------- The request to cancel
the compaction asynchronous task The compaction may still happen if the request was sent too
late Non-blocking request</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a></code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#toString()" class="member-name-link">toString</a>()</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">&nbsp;</div>
</div>
</div>
</div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-java.lang.Object">Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></h3>
<code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#clone()" title="class or interface in java.lang" class="external-link">clone</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang" class="external-link">equals</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#finalize()" title="class or interface in java.lang" class="external-link">finalize</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#getClass()" title="class or interface in java.lang" class="external-link">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#hashCode()" title="class or interface in java.lang" class="external-link">hashCode</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#notify()" title="class or interface in java.lang" class="external-link">notify</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#notifyAll()" title="class or interface in java.lang" class="external-link">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait()" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait(long)" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait(long,int)" title="class or interface in java.lang" class="external-link">wait</a></code></div>
</section>
</li>
</ul>
</section>
<section class="details">
<ul class="details-list">
<!-- ============ FIELD DETAIL =========== -->
<li>
<section class="field-details" id="field-detail">
<h2>Field Details</h2>
<ul class="member-list">
<li>
<section class="detail" id="DEEP_OVERHEAD">
<h3>DEEP_OVERHEAD</h3>
<div class="member-signature"><span class="modifiers">public static final</span>&nbsp;<span class="return-type">long</span>&nbsp;<span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/MemStoreCompactor.html#line-45">DEEP_OVERHEAD</a></span></div>
</section>
</li>
<li>
<section class="detail" id="LOG">
<h3>LOG</h3>
<div class="member-signature"><span class="modifiers">private static final</span>&nbsp;<span class="return-type">org.slf4j.Logger</span>&nbsp;<span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/MemStoreCompactor.html#line-54">LOG</a></span></div>
</section>
</li>
<li>
<section class="detail" id="compactingMemStore">
<h3>compactingMemStore</h3>
<div class="member-signature"><span class="modifiers">private</span>&nbsp;<span class="return-type"><a href="CompactingMemStore.html" title="class in org.apache.hadoop.hbase.regionserver">CompactingMemStore</a></span>&nbsp;<span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/MemStoreCompactor.html#line-55">compactingMemStore</a></span></div>
</section>
</li>
<li>
<section class="detail" id="versionedList">
<h3>versionedList</h3>
<div class="member-signature"><span class="modifiers">private</span>&nbsp;<span class="return-type"><a href="VersionedSegmentsList.html" title="class in org.apache.hadoop.hbase.regionserver">VersionedSegmentsList</a></span>&nbsp;<span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/MemStoreCompactor.html#line-58">versionedList</a></span></div>
</section>
</li>
<li>
<section class="detail" id="isInterrupted">
<h3>isInterrupted</h3>
<div class="member-signature"><span class="modifiers">private final</span>&nbsp;<span class="return-type"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/concurrent/atomic/AtomicBoolean.html" title="class or interface in java.util.concurrent.atomic" class="external-link">AtomicBoolean</a></span>&nbsp;<span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/MemStoreCompactor.html#line-61">isInterrupted</a></span></div>
</section>
</li>
<li>
<section class="detail" id="compactionKVMax">
<h3>compactionKVMax</h3>
<div class="member-signature"><span class="modifiers">private final</span>&nbsp;<span class="return-type">int</span>&nbsp;<span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/MemStoreCompactor.html#line-64">compactionKVMax</a></span></div>
</section>
</li>
<li>
<section class="detail" id="strategy">
<h3>strategy</h3>
<div class="member-signature"><span class="modifiers">private</span>&nbsp;<span class="return-type"><a href="MemStoreCompactionStrategy.html" title="class in org.apache.hadoop.hbase.regionserver">MemStoreCompactionStrategy</a></span>&nbsp;<span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/MemStoreCompactor.html#line-66">strategy</a></span></div>
</section>
</li>
</ul>
</section>
</li>
<!-- ========= CONSTRUCTOR DETAIL ======== -->
<li>
<section class="constructor-details" id="constructor-detail">
<h2>Constructor Details</h2>
<ul class="member-list">
<li>
<section class="detail" id="&lt;init&gt;(org.apache.hadoop.hbase.regionserver.CompactingMemStore,org.apache.hadoop.hbase.MemoryCompactionPolicy)">
<h3>MemStoreCompactor</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/MemStoreCompactor.html#line-68">MemStoreCompactor</a></span><wbr><span class="parameters">(<a href="CompactingMemStore.html" title="class in org.apache.hadoop.hbase.regionserver">CompactingMemStore</a>&nbsp;compactingMemStore,
<a href="../MemoryCompactionPolicy.html" title="enum class in org.apache.hadoop.hbase">MemoryCompactionPolicy</a>&nbsp;compactionPolicy)</span>
throws <span class="exceptions"><a href="../exceptions/IllegalArgumentIOException.html" title="class in org.apache.hadoop.hbase.exceptions">IllegalArgumentIOException</a></span></div>
<dl class="notes">
<dt>Throws:</dt>
<dd><code><a href="../exceptions/IllegalArgumentIOException.html" title="class in org.apache.hadoop.hbase.exceptions">IllegalArgumentIOException</a></code></dd>
</dl>
</section>
</li>
</ul>
</section>
</li>
<!-- ============ METHOD DETAIL ========== -->
<li>
<section class="method-details" id="method-detail">
<h2>Method Details</h2>
<ul class="member-list">
<li>
<section class="detail" id="toString()">
<h3>toString</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a></span>&nbsp;<span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/MemStoreCompactor.html#line-77">toString</a></span>()</div>
<dl class="notes">
<dt>Overrides:</dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#toString()" title="class or interface in java.lang" class="external-link">toString</a></code>&nbsp;in class&nbsp;<code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></code></dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="start()">
<h3>start</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">boolean</span>&nbsp;<span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/MemStoreCompactor.html#line-87">start</a></span>()
throws <span class="exceptions"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link">IOException</a></span></div>
<div class="block">---------------------------------------------------------------------- The request to dispatch
the compaction asynchronous task. The method returns true if compaction was successfully
dispatched, or false if there is already an ongoing compaction or no segments to compact.</div>
<dl class="notes">
<dt>Throws:</dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link">IOException</a></code></dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="stop()">
<h3>stop</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/MemStoreCompactor.html#line-118">stop</a></span>()</div>
<div class="block">---------------------------------------------------------------------- The request to cancel
the compaction asynchronous task The compaction may still happen if the request was sent too
late Non-blocking request</div>
</section>
</li>
<li>
<section class="detail" id="resetStats()">
<h3>resetStats</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/MemStoreCompactor.html#line-122">resetStats</a></span>()</div>
</section>
</li>
<li>
<section class="detail" id="releaseResources()">
<h3>releaseResources</h3>
<div class="member-signature"><span class="modifiers">private</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/MemStoreCompactor.html#line-130">releaseResources</a></span>()</div>
<div class="block">---------------------------------------------------------------------- Reset the interruption
indicator and clear the pointers in order to allow good garbage collection</div>
</section>
</li>
<li>
<section class="detail" id="doCompaction()">
<h3>doCompaction</h3>
<div class="member-signature"><span class="modifiers">private</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/MemStoreCompactor.html#line-140">doCompaction</a></span>()</div>
<div class="block">---------------------------------------------------------------------- The worker thread
performs the compaction asynchronously. The solo (per compactor) thread only reads the
compaction pipeline. There is at most one thread per memstore instance.</div>
</section>
</li>
<li>
<section class="detail" id="createSubstitution(org.apache.hadoop.hbase.regionserver.MemStoreCompactionStrategy.Action)">
<h3>createSubstitution</h3>
<div class="member-signature"><span class="modifiers">private</span>&nbsp;<span class="return-type"><a href="ImmutableSegment.html" title="class in org.apache.hadoop.hbase.regionserver">ImmutableSegment</a></span>&nbsp;<span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/MemStoreCompactor.html#line-202">createSubstitution</a></span><wbr><span class="parameters">(<a href="MemStoreCompactionStrategy.Action.html" title="enum class in org.apache.hadoop.hbase.regionserver">MemStoreCompactionStrategy.Action</a>&nbsp;action)</span>
throws <span class="exceptions"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link">IOException</a></span></div>
<div class="block">---------------------------------------------------------------------- Creation of the
ImmutableSegment either by merge or copy-compact of the segments of the pipeline, based on the
Compactor Iterator. The new ImmutableSegment is returned.</div>
<dl class="notes">
<dt>Throws:</dt>
<dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/io/IOException.html" title="class or interface in java.io" class="external-link">IOException</a></code></dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="initiateCompactionStrategy(org.apache.hadoop.hbase.MemoryCompactionPolicy,org.apache.hadoop.conf.Configuration,java.lang.String)">
<h3>initiateCompactionStrategy</h3>
<div class="member-signature"><span class="return-type">void</span>&nbsp;<span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/MemStoreCompactor.html#line-240">initiateCompactionStrategy</a></span><wbr><span class="parameters">(<a href="../MemoryCompactionPolicy.html" title="enum class in org.apache.hadoop.hbase">MemoryCompactionPolicy</a>&nbsp;compType,
org.apache.hadoop.conf.Configuration&nbsp;configuration,
<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>&nbsp;cfName)</span>
throws <span class="exceptions"><a href="../exceptions/IllegalArgumentIOException.html" title="class in org.apache.hadoop.hbase.exceptions">IllegalArgumentIOException</a></span></div>
<dl class="notes">
<dt>Throws:</dt>
<dd><code><a href="../exceptions/IllegalArgumentIOException.html" title="class in org.apache.hadoop.hbase.exceptions">IllegalArgumentIOException</a></code></dd>
</dl>
</section>
</li>
</ul>
</section>
</li>
</ul>
</section>
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