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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 DelimitedKeyPrefixRegionSplitPolicy" class="title">Class DelimitedKeyPrefixRegionSplitPolicy</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.conf.Configured
<div class="inheritance"><a href="RegionSplitPolicy.html" title="class in org.apache.hadoop.hbase.regionserver">org.apache.hadoop.hbase.regionserver.RegionSplitPolicy</a>
<div class="inheritance"><a href="ConstantSizeRegionSplitPolicy.html" title="class in org.apache.hadoop.hbase.regionserver">org.apache.hadoop.hbase.regionserver.ConstantSizeRegionSplitPolicy</a>
<div class="inheritance"><a href="IncreasingToUpperBoundRegionSplitPolicy.html" title="class in org.apache.hadoop.hbase.regionserver">org.apache.hadoop.hbase.regionserver.IncreasingToUpperBoundRegionSplitPolicy</a>
<div class="inheritance">org.apache.hadoop.hbase.regionserver.DelimitedKeyPrefixRegionSplitPolicy</div>
</div>
</div>
</div>
</div>
</div>
<section class="class-description" id="class-description">
<dl class="notes">
<dt>All Implemented Interfaces:</dt>
<dd><code>org.apache.hadoop.conf.Configurable</code></dd>
</dl>
<hr>
<div class="type-signature"><span class="annotations"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Deprecated.html" title="class or interface in java.lang" class="external-link">@Deprecated</a>
@Private
</span><span class="modifiers">public class </span><span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/DelimitedKeyPrefixRegionSplitPolicy.html#line-38">DelimitedKeyPrefixRegionSplitPolicy</a></span>
<span class="extends-implements">extends <a href="IncreasingToUpperBoundRegionSplitPolicy.html" title="class in org.apache.hadoop.hbase.regionserver">IncreasingToUpperBoundRegionSplitPolicy</a></span></div>
<div class="deprecation-block"><span class="deprecated-label">Deprecated.</span>
<div class="deprecation-comment">since 3.0.0 and will be removed in 4.0.0. Use <a href="RegionSplitRestriction.html" title="class in org.apache.hadoop.hbase.regionserver"><code>RegionSplitRestriction</code></a>,
instead.</div>
</div>
<div class="block">A custom RegionSplitPolicy implementing a SplitPolicy that groups rows by a prefix of the row-key
with a delimiter. Only the first delimiter for the row key will define the prefix of the row key
that is used for grouping. This ensures that a region is not split "inside" a prefix of a row
key. I.e. rows can be co-located in a region by their prefix. As an example, if you have row keys
delimited with <code>_</code>, like <code>userid_eventtype_eventid</code>, and use prefix
delimiter _, this split policy ensures that all rows starting with the same userid, belongs to
the same region.</div>
<dl class="notes">
<dt>See Also:</dt>
<dd>
<ul class="see-list">
<li><a href="KeyPrefixRegionSplitPolicy.html" title="class in org.apache.hadoop.hbase.regionserver"><code>KeyPrefixRegionSplitPolicy</code></a></li>
</ul>
</dd>
</dl>
</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 byte[]</code></div>
<div class="col-second even-row-color"><code><a href="#delimiter" class="member-name-link">delimiter</a></code></div>
<div class="col-last even-row-color">
<div class="block"><span class="deprecated-label">Deprecated.</span></div>
&nbsp;</div>
<div class="col-first odd-row-color"><code>static final <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"><code><a href="#DELIMITER_KEY" class="member-name-link">DELIMITER_KEY</a></code></div>
<div class="col-last odd-row-color">
<div class="block"><span class="deprecated-label">Deprecated.</span></div>
&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">
<div class="block"><span class="deprecated-label">Deprecated.</span></div>
&nbsp;</div>
</div>
<div class="inherited-list">
<h3 id="fields-inherited-from-class-org.apache.hadoop.hbase.regionserver.IncreasingToUpperBoundRegionSplitPolicy">Fields inherited from class&nbsp;org.apache.hadoop.hbase.regionserver.<a href="IncreasingToUpperBoundRegionSplitPolicy.html" title="class in org.apache.hadoop.hbase.regionserver">IncreasingToUpperBoundRegionSplitPolicy</a></h3>
<code><a href="IncreasingToUpperBoundRegionSplitPolicy.html#initialSize">initialSize</a></code></div>
<div class="inherited-list">
<h3 id="fields-inherited-from-class-org.apache.hadoop.hbase.regionserver.ConstantSizeRegionSplitPolicy">Fields inherited from class&nbsp;org.apache.hadoop.hbase.regionserver.<a href="ConstantSizeRegionSplitPolicy.html" title="class in org.apache.hadoop.hbase.regionserver">ConstantSizeRegionSplitPolicy</a></h3>
<code><a href="ConstantSizeRegionSplitPolicy.html#overallHRegionFiles">overallHRegionFiles</a></code></div>
<div class="inherited-list">
<h3 id="fields-inherited-from-class-org.apache.hadoop.hbase.regionserver.RegionSplitPolicy">Fields inherited from class&nbsp;org.apache.hadoop.hbase.regionserver.<a href="RegionSplitPolicy.html" title="class in org.apache.hadoop.hbase.regionserver">RegionSplitPolicy</a></h3>
<code><a href="RegionSplitPolicy.html#region">region</a></code></div>
</section>
</li>
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
<li>
<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()" class="member-name-link">DelimitedKeyPrefixRegionSplitPolicy</a>()</code></div>
<div class="col-last even-row-color">
<div class="block"><span class="deprecated-label">Deprecated.</span></div>
&nbsp;</div>
</div>
</section>
</li>
<!-- ========== METHOD SUMMARY =========== -->
<li>
<section class="method-summary" id="method-summary">
<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><button id="method-summary-table-tab6" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab6', 3)" class="table-tab">Deprecated Methods</button></div>
<div id="method-summary-table.tabpanel" role="tabpanel">
<div class="summary-table three-column-summary" aria-labelledby="method-summary-table-tab0">
<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 method-summary-table-tab6"><code>protected void</code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4 method-summary-table-tab6"><code><a href="#configureForRegion(org.apache.hadoop.hbase.regionserver.HRegion)" class="member-name-link">configureForRegion</a><wbr>(<a href="HRegion.html" title="class in org.apache.hadoop.hbase.regionserver">HRegion</a>&nbsp;region)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4 method-summary-table-tab6">
<div class="block"><span class="deprecated-label">Deprecated.</span></div>
<div class="block">Upon construction, this method will be called with the region to be governed.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4 method-summary-table-tab6"><code>protected byte[]</code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4 method-summary-table-tab6"><code><a href="#getSplitPoint()" class="member-name-link">getSplitPoint</a>()</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4 method-summary-table-tab6">
<div class="block"><span class="deprecated-label">Deprecated.</span></div>
&nbsp;</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4 method-summary-table-tab6"><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 even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4 method-summary-table-tab6"><code><a href="#toString()" class="member-name-link">toString</a>()</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4 method-summary-table-tab6">
<div class="block"><span class="deprecated-label">Deprecated.</span></div>
&nbsp;</div>
</div>
</div>
</div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-org.apache.hadoop.hbase.regionserver.IncreasingToUpperBoundRegionSplitPolicy">Methods inherited from class&nbsp;org.apache.hadoop.hbase.regionserver.<a href="IncreasingToUpperBoundRegionSplitPolicy.html" title="class in org.apache.hadoop.hbase.regionserver">IncreasingToUpperBoundRegionSplitPolicy</a></h3>
<code><a href="IncreasingToUpperBoundRegionSplitPolicy.html#getSizeToCheck(int)">getSizeToCheck</a>, <a href="IncreasingToUpperBoundRegionSplitPolicy.html#shouldSplit()">shouldSplit</a></code></div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-org.apache.hadoop.hbase.regionserver.ConstantSizeRegionSplitPolicy">Methods inherited from class&nbsp;org.apache.hadoop.hbase.regionserver.<a href="ConstantSizeRegionSplitPolicy.html" title="class in org.apache.hadoop.hbase.regionserver">ConstantSizeRegionSplitPolicy</a></h3>
<code><a href="ConstantSizeRegionSplitPolicy.html#getDesiredMaxFileSize()">getDesiredMaxFileSize</a>, <a href="ConstantSizeRegionSplitPolicy.html#isExceedSize(long)">isExceedSize</a>, <a href="ConstantSizeRegionSplitPolicy.html#positiveJitterRate()">positiveJitterRate</a></code></div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-org.apache.hadoop.hbase.regionserver.RegionSplitPolicy">Methods inherited from class&nbsp;org.apache.hadoop.hbase.regionserver.<a href="RegionSplitPolicy.html" title="class in org.apache.hadoop.hbase.regionserver">RegionSplitPolicy</a></h3>
<code><a href="RegionSplitPolicy.html#canSplit()">canSplit</a>, <a href="RegionSplitPolicy.html#create(org.apache.hadoop.hbase.regionserver.HRegion,org.apache.hadoop.conf.Configuration)">create</a>, <a href="RegionSplitPolicy.html#getSplitPolicyClass(org.apache.hadoop.hbase.client.TableDescriptor,org.apache.hadoop.conf.Configuration)">getSplitPolicyClass</a>, <a href="RegionSplitPolicy.html#skipStoreFileRangeCheck(java.lang.String)">skipStoreFileRangeCheck</a></code></div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-org.apache.hadoop.conf.Configured">Methods inherited from class&nbsp;org.apache.hadoop.conf.Configured</h3>
<code>getConf, setConf</code></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="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/DelimitedKeyPrefixRegionSplitPolicy.html#line-42">LOG</a></span></div>
<div class="deprecation-block"><span class="deprecated-label">Deprecated.</span></div>
</section>
</li>
<li>
<section class="detail" id="DELIMITER_KEY">
<h3>DELIMITER_KEY</h3>
<div class="member-signature"><span class="modifiers">public static final</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/DelimitedKeyPrefixRegionSplitPolicy.html#line-44">DELIMITER_KEY</a></span></div>
<div class="deprecation-block"><span class="deprecated-label">Deprecated.</span></div>
<dl class="notes">
<dt>See Also:</dt>
<dd>
<ul class="see-list">
<li><a href="../../../../../constant-values.html#org.apache.hadoop.hbase.regionserver.DelimitedKeyPrefixRegionSplitPolicy.DELIMITER_KEY">Constant Field Values</a></li>
</ul>
</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="delimiter">
<h3>delimiter</h3>
<div class="member-signature"><span class="modifiers">private</span>&nbsp;<span class="return-type">byte[]</span>&nbsp;<span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/DelimitedKeyPrefixRegionSplitPolicy.html#line-46">delimiter</a></span></div>
<div class="deprecation-block"><span class="deprecated-label">Deprecated.</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;()">
<h3>DelimitedKeyPrefixRegionSplitPolicy</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/DelimitedKeyPrefixRegionSplitPolicy.html#line-40">DelimitedKeyPrefixRegionSplitPolicy</a></span>()</div>
<div class="deprecation-block"><span class="deprecated-label">Deprecated.</span></div>
</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/DelimitedKeyPrefixRegionSplitPolicy.html#line-48">toString</a></span>()</div>
<div class="deprecation-block"><span class="deprecated-label">Deprecated.</span></div>
<dl class="notes">
<dt>Overrides:</dt>
<dd><code><a href="IncreasingToUpperBoundRegionSplitPolicy.html#toString()">toString</a></code>&nbsp;in class&nbsp;<code><a href="IncreasingToUpperBoundRegionSplitPolicy.html" title="class in org.apache.hadoop.hbase.regionserver">IncreasingToUpperBoundRegionSplitPolicy</a></code></dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="configureForRegion(org.apache.hadoop.hbase.regionserver.HRegion)">
<h3>configureForRegion</h3>
<div class="member-signature"><span class="modifiers">protected</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/DelimitedKeyPrefixRegionSplitPolicy.html#line-54">configureForRegion</a></span><wbr><span class="parameters">(<a href="HRegion.html" title="class in org.apache.hadoop.hbase.regionserver">HRegion</a>&nbsp;region)</span></div>
<div class="deprecation-block"><span class="deprecated-label">Deprecated.</span></div>
<div class="block"><span class="descfrm-type-label">Description copied from class:&nbsp;<code><a href="RegionSplitPolicy.html#configureForRegion(org.apache.hadoop.hbase.regionserver.HRegion)">RegionSplitPolicy</a></code></span></div>
<div class="block">Upon construction, this method will be called with the region to be governed. It will be called
once and only once.</div>
<dl class="notes">
<dt>Overrides:</dt>
<dd><code><a href="IncreasingToUpperBoundRegionSplitPolicy.html#configureForRegion(org.apache.hadoop.hbase.regionserver.HRegion)">configureForRegion</a></code>&nbsp;in class&nbsp;<code><a href="IncreasingToUpperBoundRegionSplitPolicy.html" title="class in org.apache.hadoop.hbase.regionserver">IncreasingToUpperBoundRegionSplitPolicy</a></code></dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="getSplitPoint()">
<h3>getSplitPoint</h3>
<div class="member-signature"><span class="modifiers">protected</span>&nbsp;<span class="return-type">byte[]</span>&nbsp;<span class="element-name"><a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/DelimitedKeyPrefixRegionSplitPolicy.html#line-67">getSplitPoint</a></span>()</div>
<div class="deprecation-block"><span class="deprecated-label">Deprecated.</span></div>
<dl class="notes">
<dt>Overrides:</dt>
<dd><code><a href="RegionSplitPolicy.html#getSplitPoint()">getSplitPoint</a></code>&nbsp;in class&nbsp;<code><a href="RegionSplitPolicy.html" title="class in org.apache.hadoop.hbase.regionserver">RegionSplitPolicy</a></code></dd>
<dt>Returns:</dt>
<dd>the key at which the region should be split, or null if it cannot be split. This will
only be called if shouldSplit previously returned true.</dd>
</dl>
</section>
</li>
</ul>
</section>
</li>
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