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<div class="subTitle">org.apache.hadoop.hbase.regionserver</div>
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<li>org.apache.hadoop.hbase.regionserver.Segment</li>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="../../../../../org/apache/hadoop/hbase/regionserver/MemStoreSizing.html" title="interface in org.apache.hadoop.hbase.regionserver">MemStoreSizing</a></dd>
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<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../../../org/apache/hadoop/hbase/regionserver/ImmutableSegment.html" title="class in org.apache.hadoop.hbase.regionserver">ImmutableSegment</a>, <a href="../../../../../org/apache/hadoop/hbase/regionserver/MutableSegment.html" title="class in org.apache.hadoop.hbase.regionserver">MutableSegment</a></dd>
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<pre>@InterfaceAudience.Private
public abstract class <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/Segment.html#line.46">Segment</a>
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>
implements <a href="../../../../../org/apache/hadoop/hbase/regionserver/MemStoreSizing.html" title="interface in org.apache.hadoop.hbase.regionserver">MemStoreSizing</a></pre>
<div class="block">This is an abstraction of a segment maintained in a memstore, e.g., the active
cell set or its snapshot.
This abstraction facilitates the management of the compaction pipeline and the shifts of these
segments from active set to snapshot set in the default implementation.</div>
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<h3>Field Summary</h3>
<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation">
<caption><span>Fields</span><span class="tabEnd">&nbsp;</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>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/AtomicReference.html?is-external=true" title="class or interface in java.util.concurrent.atomic">AtomicReference</a>&lt;<a href="../../../../../org/apache/hadoop/hbase/regionserver/CellSet.html" title="class in org.apache.hadoop.hbase.regionserver">CellSet</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#cellSet">cellSet</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <a href="../../../../../org/apache/hadoop/hbase/CellComparator.html" title="interface in org.apache.hadoop.hbase">CellComparator</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#comparator">comparator</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#DEEP_OVERHEAD">DEEP_OVERHEAD</a></span></code>&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>static long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#FIXED_OVERHEAD">FIXED_OVERHEAD</a></span></code>&nbsp;</td>
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<tr class="altColor">
<td class="colFirst"><code>private <a href="../../../../../org/apache/hadoop/hbase/regionserver/MemStoreLAB.html" title="interface in org.apache.hadoop.hbase.regionserver">MemStoreLAB</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#memStoreLAB">memStoreLAB</a></span></code>&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>protected <a href="../../../../../org/apache/hadoop/hbase/regionserver/MemStoreSizing.html" title="interface in org.apache.hadoop.hbase.regionserver">MemStoreSizing</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#memStoreSizing">memStoreSizing</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#minSequenceId">minSequenceId</a></span></code>&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#tagsPresent">tagsPresent</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected <a href="../../../../../org/apache/hadoop/hbase/regionserver/TimeRangeTracker.html" title="class in org.apache.hadoop.hbase.regionserver">TimeRangeTracker</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#timeRangeTracker">timeRangeTracker</a></span></code>&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/locks/ReentrantReadWriteLock.html?is-external=true" title="class or interface in java.util.concurrent.locks">ReentrantReadWriteLock</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#updatesLock">updatesLock</a></span></code>&nbsp;</td>
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<h3>Fields inherited from interface&nbsp;org.apache.hadoop.hbase.regionserver.<a href="../../../../../org/apache/hadoop/hbase/regionserver/MemStoreSizing.html" title="interface in org.apache.hadoop.hbase.regionserver">MemStoreSizing</a></h3>
<code><a href="../../../../../org/apache/hadoop/hbase/regionserver/MemStoreSizing.html#DUD">DUD</a></code></li>
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<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation">
<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier</th>
<th class="colLast" scope="col">Constructor and Description</th>
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<td class="colFirst"><code>protected </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#Segment-org.apache.hadoop.hbase.CellComparator-java.util.List-org.apache.hadoop.hbase.regionserver.TimeRangeTracker-">Segment</a></span>(<a href="../../../../../org/apache/hadoop/hbase/CellComparator.html" title="interface in org.apache.hadoop.hbase">CellComparator</a>&nbsp;comparator,
<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/ImmutableSegment.html" title="class in org.apache.hadoop.hbase.regionserver">ImmutableSegment</a>&gt;&nbsp;segments,
<a href="../../../../../org/apache/hadoop/hbase/regionserver/TimeRangeTracker.html" title="class in org.apache.hadoop.hbase.regionserver">TimeRangeTracker</a>&nbsp;trt)</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#Segment-org.apache.hadoop.hbase.CellComparator-org.apache.hadoop.hbase.regionserver.TimeRangeTracker-">Segment</a></span>(<a href="../../../../../org/apache/hadoop/hbase/CellComparator.html" title="interface in org.apache.hadoop.hbase">CellComparator</a>&nbsp;comparator,
<a href="../../../../../org/apache/hadoop/hbase/regionserver/TimeRangeTracker.html" title="class in org.apache.hadoop.hbase.regionserver">TimeRangeTracker</a>&nbsp;trt)</code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#Segment-org.apache.hadoop.hbase.regionserver.CellSet-org.apache.hadoop.hbase.CellComparator-org.apache.hadoop.hbase.regionserver.MemStoreLAB-org.apache.hadoop.hbase.regionserver.TimeRangeTracker-">Segment</a></span>(<a href="../../../../../org/apache/hadoop/hbase/regionserver/CellSet.html" title="class in org.apache.hadoop.hbase.regionserver">CellSet</a>&nbsp;cellSet,
<a href="../../../../../org/apache/hadoop/hbase/CellComparator.html" title="interface in org.apache.hadoop.hbase">CellComparator</a>&nbsp;comparator,
<a href="../../../../../org/apache/hadoop/hbase/regionserver/MemStoreLAB.html" title="interface in org.apache.hadoop.hbase.regionserver">MemStoreLAB</a>&nbsp;memStoreLAB,
<a href="../../../../../org/apache/hadoop/hbase/regionserver/TimeRangeTracker.html" title="class in org.apache.hadoop.hbase.regionserver">TimeRangeTracker</a>&nbsp;trt)</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#Segment-org.apache.hadoop.hbase.regionserver.Segment-">Segment</a></span>(<a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html" title="class in org.apache.hadoop.hbase.regionserver">Segment</a>&nbsp;segment)</code>&nbsp;</td>
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<h3>Method Summary</h3>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
<tr>
<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>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#close--">close</a></span>()</code>
<div class="block">Closing a segment before it is being discarded</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#compare-org.apache.hadoop.hbase.Cell-org.apache.hadoop.hbase.Cell-">compare</a></span>(<a href="../../../../../org/apache/hadoop/hbase/Cell.html" title="interface in org.apache.hadoop.hbase">Cell</a>&nbsp;left,
<a href="../../../../../org/apache/hadoop/hbase/Cell.html" title="interface in org.apache.hadoop.hbase">Cell</a>&nbsp;right)</code>&nbsp;</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#compareAndSetDataSize-long-long-">compareAndSetDataSize</a></span>(long&nbsp;expected,
long&nbsp;updated)</code>&nbsp;</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#compareRows-org.apache.hadoop.hbase.Cell-org.apache.hadoop.hbase.Cell-">compareRows</a></span>(<a href="../../../../../org/apache/hadoop/hbase/Cell.html" title="interface in org.apache.hadoop.hbase">Cell</a>&nbsp;left,
<a href="../../../../../org/apache/hadoop/hbase/Cell.html" title="interface in org.apache.hadoop.hbase">Cell</a>&nbsp;right)</code>&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#decScannerCount--">decScannerCount</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>(package private) void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#dump-org.slf4j.Logger-">dump</a></span>(org.slf4j.Logger&nbsp;log)</code>
<div class="block">Dumps all cells of the segment into the given log</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>(package private) static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#getCellLength-org.apache.hadoop.hbase.Cell-">getCellLength</a></span>(<a href="../../../../../org/apache/hadoop/hbase/Cell.html" title="interface in org.apache.hadoop.hbase">Cell</a>&nbsp;cell)</code>
<div class="block">Get cell length after serialized in <a href="../../../../../org/apache/hadoop/hbase/KeyValue.html" title="class in org.apache.hadoop.hbase"><code>KeyValue</code></a></div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#getCellsCount--">getCellsCount</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>protected <a href="../../../../../org/apache/hadoop/hbase/regionserver/CellSet.html" title="class in org.apache.hadoop.hbase.regionserver">CellSet</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#getCellSet--">getCellSet</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>protected <a href="../../../../../org/apache/hadoop/hbase/CellComparator.html" title="interface in org.apache.hadoop.hbase">CellComparator</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#getComparator--">getComparator</a></span>()</code>
<div class="block">Returns the Cell comparator used by this segment</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#getDataSize--">getDataSize</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#getHeapSize--">getHeapSize</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>(package private) <a href="../../../../../org/apache/hadoop/hbase/regionserver/MemStoreLAB.html" title="interface in org.apache.hadoop.hbase.regionserver">MemStoreLAB</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#getMemStoreLAB--">getMemStoreLAB</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/hbase/regionserver/MemStoreSize.html" title="class in org.apache.hadoop.hbase.regionserver">MemStoreSize</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#getMemStoreSize--">getMemStoreSize</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#getMinSequenceId--">getMinSequenceId</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#getOffHeapSize--">getOffHeapSize</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i16" class="altColor">
<td class="colFirst"><code>protected <a href="../../../../../org/apache/hadoop/hbase/regionserver/KeyValueScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">KeyValueScanner</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#getScanner-long-">getScanner</a></span>(long&nbsp;readPoint)</code>
<div class="block">Creates the scanner for the given read point</div>
</td>
</tr>
<tr id="i17" class="rowColor">
<td class="colFirst"><code><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/KeyValueScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">KeyValueScanner</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#getScanners-long-">getScanners</a></span>(long&nbsp;readPoint)</code>&nbsp;</td>
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<tr id="i18" class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/hbase/regionserver/TimeRangeTracker.html" title="class in org.apache.hadoop.hbase.regionserver">TimeRangeTracker</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#getTimeRangeTracker--">getTimeRangeTracker</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i19" class="rowColor">
<td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/locks/ReentrantReadWriteLock.html?is-external=true" title="class or interface in java.util.concurrent.locks">ReentrantReadWriteLock</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/Segment.html#getUpdatesLock--">getUpdatesLock</a></span>()</code>&nbsp;</td>
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