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<div class="subTitle">org.apache.hadoop.hbase.regionserver</div>
<h2 title="Class StoreEngine" class="title">Class StoreEngine&lt;SF extends <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreFlusher.html" title="class in org.apache.hadoop.hbase.regionserver">StoreFlusher</a>,CP extends <a href="../../../../../org/apache/hadoop/hbase/regionserver/compactions/CompactionPolicy.html" title="class in org.apache.hadoop.hbase.regionserver.compactions">CompactionPolicy</a>,C extends <a href="../../../../../org/apache/hadoop/hbase/regionserver/compactions/Compactor.html" title="class in org.apache.hadoop.hbase.regionserver.compactions">Compactor</a>,SFM extends <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreFileManager.html" title="interface in org.apache.hadoop.hbase.regionserver">StoreFileManager</a>&gt;</h2>
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<li>org.apache.hadoop.hbase.regionserver.StoreEngine&lt;SF,CP,C,SFM&gt;</li>
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<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../../../org/apache/hadoop/hbase/regionserver/DateTieredStoreEngine.html" title="class in org.apache.hadoop.hbase.regionserver">DateTieredStoreEngine</a>, <a href="../../../../../org/apache/hadoop/hbase/regionserver/DefaultStoreEngine.html" title="class in org.apache.hadoop.hbase.regionserver">DefaultStoreEngine</a>, <a href="../../../../../org/apache/hadoop/hbase/regionserver/StripeStoreEngine.html" title="class in org.apache.hadoop.hbase.regionserver">StripeStoreEngine</a></dd>
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<pre>@InterfaceAudience.Private
public abstract class <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/StoreEngine.html#line.39">StoreEngine</a>&lt;SF extends <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreFlusher.html" title="class in org.apache.hadoop.hbase.regionserver">StoreFlusher</a>,CP extends <a href="../../../../../org/apache/hadoop/hbase/regionserver/compactions/CompactionPolicy.html" title="class in org.apache.hadoop.hbase.regionserver.compactions">CompactionPolicy</a>,C extends <a href="../../../../../org/apache/hadoop/hbase/regionserver/compactions/Compactor.html" title="class in org.apache.hadoop.hbase.regionserver.compactions">Compactor</a>,SFM extends <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreFileManager.html" title="interface in org.apache.hadoop.hbase.regionserver">StoreFileManager</a>&gt;
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">StoreEngine is a factory that can create the objects necessary for HStore to operate.
Since not all compaction policies, compactors and store file managers are compatible,
they are tied together and replaced together via StoreEngine-s.</div>
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<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
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<td class="colFirst"><code>protected <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreEngine.html" title="type parameter in StoreEngine">CP</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreEngine.html#compactionPolicy">compactionPolicy</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>protected <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreEngine.html" title="type parameter in StoreEngine">C</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreEngine.html#compactor">compactor</a></span></code>&nbsp;</td>
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<tr class="altColor">
<td class="colFirst"><code>private static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a>&lt;? extends <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreEngine.html" title="class in org.apache.hadoop.hbase.regionserver">StoreEngine</a>&lt;?,?,?,?&gt;&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreEngine.html#DEFAULT_STORE_ENGINE_CLASS">DEFAULT_STORE_ENGINE_CLASS</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreEngine.html#STORE_ENGINE_CLASS_KEY">STORE_ENGINE_CLASS_KEY</a></span></code>
<div class="block">The name of the configuration parameter that specifies the class of
a store engine that is used to manage and compact HBase store files.</div>
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<td class="colFirst"><code>protected <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreEngine.html" title="type parameter in StoreEngine">SFM</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreEngine.html#storeFileManager">storeFileManager</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>protected <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreEngine.html" title="type parameter in StoreEngine">SF</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreEngine.html#storeFlusher">storeFlusher</a></span></code>&nbsp;</td>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreEngine.html#StoreEngine--">StoreEngine</a></span>()</code>&nbsp;</td>
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<td class="colFirst"><code>static <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreEngine.html" title="class in org.apache.hadoop.hbase.regionserver">StoreEngine</a>&lt;?,?,?,?&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreEngine.html#create-org.apache.hadoop.hbase.regionserver.HStore-org.apache.hadoop.conf.Configuration-org.apache.hadoop.hbase.CellComparator-">create</a></span>(<a href="../../../../../org/apache/hadoop/hbase/regionserver/HStore.html" title="class in org.apache.hadoop.hbase.regionserver">HStore</a>&nbsp;store,
org.apache.hadoop.conf.Configuration&nbsp;conf,
<a href="../../../../../org/apache/hadoop/hbase/CellComparator.html" title="interface in org.apache.hadoop.hbase">CellComparator</a>&nbsp;cellComparator)</code>
<div class="block">Create the StoreEngine configured for the given Store.</div>
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<td class="colFirst"><code>abstract <a href="../../../../../org/apache/hadoop/hbase/regionserver/compactions/CompactionContext.html" title="class in org.apache.hadoop.hbase.regionserver.compactions">CompactionContext</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreEngine.html#createCompaction--">createCompaction</a></span>()</code>
<div class="block">Creates an instance of a compaction context specific to this engine.</div>
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<td class="colFirst"><code>protected abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreEngine.html#createComponents-org.apache.hadoop.conf.Configuration-org.apache.hadoop.hbase.regionserver.HStore-org.apache.hadoop.hbase.CellComparator-">createComponents</a></span>(org.apache.hadoop.conf.Configuration&nbsp;conf,
<a href="../../../../../org/apache/hadoop/hbase/regionserver/HStore.html" title="class in org.apache.hadoop.hbase.regionserver">HStore</a>&nbsp;store,
<a href="../../../../../org/apache/hadoop/hbase/CellComparator.html" title="interface in org.apache.hadoop.hbase">CellComparator</a>&nbsp;cellComparator)</code>
<div class="block">Create the StoreEngine's components.</div>
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<td class="colFirst"><code>private void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreEngine.html#createComponentsOnce-org.apache.hadoop.conf.Configuration-org.apache.hadoop.hbase.regionserver.HStore-org.apache.hadoop.hbase.CellComparator-">createComponentsOnce</a></span>(org.apache.hadoop.conf.Configuration&nbsp;conf,
<a href="../../../../../org/apache/hadoop/hbase/regionserver/HStore.html" title="class in org.apache.hadoop.hbase.regionserver">HStore</a>&nbsp;store,
<a href="../../../../../org/apache/hadoop/hbase/CellComparator.html" title="interface in org.apache.hadoop.hbase">CellComparator</a>&nbsp;cellComparator)</code>&nbsp;</td>
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<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/hbase/regionserver/compactions/CompactionPolicy.html" title="class in org.apache.hadoop.hbase.regionserver.compactions">CompactionPolicy</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreEngine.html#getCompactionPolicy--">getCompactionPolicy</a></span>()</code>&nbsp;</td>
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<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/hbase/regionserver/compactions/Compactor.html" title="class in org.apache.hadoop.hbase.regionserver.compactions">Compactor</a></code></td>
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<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreFileManager.html" title="interface in org.apache.hadoop.hbase.regionserver">StoreFileManager</a></code></td>
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<td class="colFirst"><code>abstract boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreEngine.html#needsCompaction-java.util.List-">needsCompaction</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../org/apache/hadoop/hbase/regionserver/HStoreFile.html" title="class in org.apache.hadoop.hbase.regionserver">HStoreFile</a>&gt;&nbsp;filesCompacting)</code>&nbsp;</td>
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<pre>protected&nbsp;<a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreEngine.html" title="type parameter in StoreEngine">SF</a> extends <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreFlusher.html" title="class in org.apache.hadoop.hbase.regionserver">StoreFlusher</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/StoreEngine.html#line.41">storeFlusher</a></pre>
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<pre>protected&nbsp;<a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreEngine.html" title="type parameter in StoreEngine">CP</a> extends <a href="../../../../../org/apache/hadoop/hbase/regionserver/compactions/CompactionPolicy.html" title="class in org.apache.hadoop.hbase.regionserver.compactions">CompactionPolicy</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/StoreEngine.html#line.42">compactionPolicy</a></pre>
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<pre>protected&nbsp;<a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreEngine.html" title="type parameter in StoreEngine">C</a> extends <a href="../../../../../org/apache/hadoop/hbase/regionserver/compactions/Compactor.html" title="class in org.apache.hadoop.hbase.regionserver.compactions">Compactor</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/StoreEngine.html#line.43">compactor</a></pre>
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<pre>protected&nbsp;<a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreEngine.html" title="type parameter in StoreEngine">SFM</a> extends <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreFileManager.html" title="interface in org.apache.hadoop.hbase.regionserver">StoreFileManager</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/StoreEngine.html#line.44">storeFileManager</a></pre>
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<pre>public static final&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> <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/StoreEngine.html#line.50">STORE_ENGINE_CLASS_KEY</a></pre>
<div class="block">The name of the configuration parameter that specifies the class of
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<pre>private static final&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a>&lt;? extends <a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreEngine.html" title="class in org.apache.hadoop.hbase.regionserver">StoreEngine</a>&lt;?,?,?,?&gt;&gt; <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/StoreEngine.html#line.53">DEFAULT_STORE_ENGINE_CLASS</a></pre>
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<pre>public&nbsp;<a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/StoreEngine.html#line.39">StoreEngine</a>()</pre>
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<pre>public&nbsp;<a href="../../../../../org/apache/hadoop/hbase/regionserver/compactions/CompactionPolicy.html" title="class in org.apache.hadoop.hbase.regionserver.compactions">CompactionPolicy</a>&nbsp;<a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/StoreEngine.html#line.58">getCompactionPolicy</a>()</pre>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Compaction policy to use.</dd>
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<a name="getCompactor--">
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<h4>getCompactor</h4>
<pre>public&nbsp;<a href="../../../../../org/apache/hadoop/hbase/regionserver/compactions/Compactor.html" title="class in org.apache.hadoop.hbase.regionserver.compactions">Compactor</a>&nbsp;<a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/StoreEngine.html#line.65">getCompactor</a>()</pre>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Compactor to use.</dd>
</dl>
</li>
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<a name="getStoreFileManager--">
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<h4>getStoreFileManager</h4>
<pre>public&nbsp;<a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreFileManager.html" title="interface in org.apache.hadoop.hbase.regionserver">StoreFileManager</a>&nbsp;<a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/StoreEngine.html#line.72">getStoreFileManager</a>()</pre>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Store file manager to use.</dd>
</dl>
</li>
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<a name="getStoreFlusher--">
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<h4>getStoreFlusher</h4>
<pre>public&nbsp;<a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreFlusher.html" title="class in org.apache.hadoop.hbase.regionserver">StoreFlusher</a>&nbsp;<a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/StoreEngine.html#line.79">getStoreFlusher</a>()</pre>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Store flusher to use.</dd>
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<h4>needsCompaction</h4>
<pre>public abstract&nbsp;boolean&nbsp;<a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/StoreEngine.html#line.87">needsCompaction</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../org/apache/hadoop/hbase/regionserver/HStoreFile.html" title="class in org.apache.hadoop.hbase.regionserver">HStoreFile</a>&gt;&nbsp;filesCompacting)</pre>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>filesCompacting</code> - Files currently compacting</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>whether a compaction selection is possible</dd>
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<h4>createCompaction</h4>
<pre>public abstract&nbsp;<a href="../../../../../org/apache/hadoop/hbase/regionserver/compactions/CompactionContext.html" title="class in org.apache.hadoop.hbase.regionserver.compactions">CompactionContext</a>&nbsp;<a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/StoreEngine.html#line.94">createCompaction</a>()
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Creates an instance of a compaction context specific to this engine.
Doesn't actually select or start a compaction. See CompactionContext class comment.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>New CompactionContext object.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<h4>createComponents</h4>
<pre>protected abstract&nbsp;void&nbsp;<a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/StoreEngine.html#line.99">createComponents</a>(org.apache.hadoop.conf.Configuration&nbsp;conf,
<a href="../../../../../org/apache/hadoop/hbase/regionserver/HStore.html" title="class in org.apache.hadoop.hbase.regionserver">HStore</a>&nbsp;store,
<a href="../../../../../org/apache/hadoop/hbase/CellComparator.html" title="interface in org.apache.hadoop.hbase">CellComparator</a>&nbsp;cellComparator)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Create the StoreEngine's components.</div>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<pre>private&nbsp;void&nbsp;<a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/StoreEngine.html#line.102">createComponentsOnce</a>(org.apache.hadoop.conf.Configuration&nbsp;conf,
<a href="../../../../../org/apache/hadoop/hbase/regionserver/HStore.html" title="class in org.apache.hadoop.hbase.regionserver">HStore</a>&nbsp;store,
<a href="../../../../../org/apache/hadoop/hbase/CellComparator.html" title="interface in org.apache.hadoop.hbase">CellComparator</a>&nbsp;cellComparator)
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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<h4>create</h4>
<pre>public static&nbsp;<a href="../../../../../org/apache/hadoop/hbase/regionserver/StoreEngine.html" title="class in org.apache.hadoop.hbase.regionserver">StoreEngine</a>&lt;?,?,?,?&gt;&nbsp;<a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/StoreEngine.html#line.119">create</a>(<a href="../../../../../org/apache/hadoop/hbase/regionserver/HStore.html" title="class in org.apache.hadoop.hbase.regionserver">HStore</a>&nbsp;store,
org.apache.hadoop.conf.Configuration&nbsp;conf,
<a href="../../../../../org/apache/hadoop/hbase/CellComparator.html" title="interface in org.apache.hadoop.hbase">CellComparator</a>&nbsp;cellComparator)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Create the StoreEngine configured for the given Store.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>store</code> - The store. An unfortunate dependency needed due to it
being passed to coprocessors via the compactor.</dd>
<dd><code>conf</code> - Store configuration.</dd>
<dd><code>cellComparator</code> - CellComparator for storeFileManager.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>StoreEngine to use.</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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