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<div class="subTitle">org.apache.hadoop.hbase.mapreduce</div>
<h2 title="Class TableRecordReaderImpl" class="title">Class TableRecordReaderImpl</h2>
</div>
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<ul class="inheritance">
<li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li>
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<li>org.apache.hadoop.hbase.mapreduce.TableRecordReaderImpl</li>
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<pre>@InterfaceAudience.Public
public class <a href="../../../../../src-html/org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#line.47">TableRecordReaderImpl</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></pre>
<div class="block">Iterate over an HBase table data, return (ImmutableBytesWritable, Result)
pairs.</div>
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<div class="summary">
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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 org.apache.hadoop.mapreduce.TaskAttemptContext</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#context">context</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <a href="../../../../../org/apache/hadoop/hbase/client/Scan.html" title="class in org.apache.hadoop.hbase.client">Scan</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#currentScan">currentScan</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>(package private) 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/mapreduce/TableRecordReaderImpl.html#HBASE_COUNTER_GROUP_NAME">HBASE_COUNTER_GROUP_NAME</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <a href="../../../../../org/apache/hadoop/hbase/client/Table.html" title="interface in org.apache.hadoop.hbase.client">Table</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#htable">htable</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private <a href="../../../../../org/apache/hadoop/hbase/io/ImmutableBytesWritable.html" title="class in org.apache.hadoop.hbase.io">ImmutableBytesWritable</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#key">key</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private byte[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#lastSuccessfulRow">lastSuccessfulRow</a></span></code>&nbsp;</td>
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<tr class="altColor">
<td class="colFirst"><code>private static org.slf4j.Logger</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#LOG">LOG</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<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/mapreduce/TableRecordReaderImpl.html#LOG_PER_ROW_COUNT">LOG_PER_ROW_COUNT</a></span></code>&nbsp;</td>
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<tr class="altColor">
<td class="colFirst"><code>private int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#logPerRowCount">logPerRowCount</a></span></code>&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>private boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#logScannerActivity">logScannerActivity</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#numRestarts">numRestarts</a></span></code>&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>private long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#numStale">numStale</a></span></code>&nbsp;</td>
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<tr class="altColor">
<td class="colFirst"><code>private int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#rowcount">rowcount</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <a href="../../../../../org/apache/hadoop/hbase/client/Scan.html" title="class in org.apache.hadoop.hbase.client">Scan</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#scan">scan</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private <a href="../../../../../org/apache/hadoop/hbase/client/ResultScanner.html" title="interface in org.apache.hadoop.hbase.client">ResultScanner</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#scanner">scanner</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#timestamp">timestamp</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private <a href="../../../../../org/apache/hadoop/hbase/client/Result.html" title="class in org.apache.hadoop.hbase.client">Result</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#value">value</a></span></code>&nbsp;</td>
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<th class="colOne" scope="col">Constructor and Description</th>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#TableRecordReaderImpl--">TableRecordReaderImpl</a></span>()</code>&nbsp;</td>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<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/mapreduce/TableRecordReaderImpl.html#close--">close</a></span>()</code>
<div class="block">Closes the split.</div>
</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/hbase/io/ImmutableBytesWritable.html" title="class in org.apache.hadoop.hbase.io">ImmutableBytesWritable</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#getCurrentKey--">getCurrentKey</a></span>()</code>
<div class="block">Returns the current key.</div>
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<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/hbase/client/Result.html" title="class in org.apache.hadoop.hbase.client">Result</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#getCurrentValue--">getCurrentValue</a></span>()</code>
<div class="block">Returns the current value.</div>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code>float</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#getProgress--">getProgress</a></span>()</code>
<div class="block">The current progress of the record reader through its data.</div>
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<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/mapreduce/TableRecordReaderImpl.html#initialize-org.apache.hadoop.mapreduce.InputSplit-org.apache.hadoop.mapreduce.TaskAttemptContext-">initialize</a></span>(org.apache.hadoop.mapreduce.InputSplit&nbsp;inputsplit,
org.apache.hadoop.mapreduce.TaskAttemptContext&nbsp;context)</code>
<div class="block">Build the scanner.</div>
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<tr id="i5" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#nextKeyValue--">nextKeyValue</a></span>()</code>
<div class="block">Positions the record reader to the next record.</div>
</td>
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<tr id="i6" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#restart-byte:A-">restart</a></span>(byte[]&nbsp;firstRow)</code>
<div class="block">Restart from survivable exceptions by creating a new scanner.</div>
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<tr id="i7" class="rowColor">
<td class="colFirst"><code>protected static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Method.html?is-external=true" title="class or interface in java.lang.reflect">Method</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#retrieveGetCounterWithStringsParams-org.apache.hadoop.mapreduce.TaskAttemptContext-">retrieveGetCounterWithStringsParams</a></span>(org.apache.hadoop.mapreduce.TaskAttemptContext&nbsp;context)</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;
<div class="block"><span class="deprecationComment">since 2.4.0 and 2.3.2, will be removed in 4.0.0</span></div>
</div>
</td>
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<tr id="i8" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#setHTable-org.apache.hadoop.hbase.client.Table-">setHTable</a></span>(<a href="../../../../../org/apache/hadoop/hbase/client/Table.html" title="interface in org.apache.hadoop.hbase.client">Table</a>&nbsp;htable)</code>
<div class="block">Sets the HBase table.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#setScan-org.apache.hadoop.hbase.client.Scan-">setScan</a></span>(<a href="../../../../../org/apache/hadoop/hbase/client/Scan.html" title="class in org.apache.hadoop.hbase.client">Scan</a>&nbsp;scan)</code>
<div class="block">Sets the scan defining the actual details like columns etc.</div>
</td>
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<tr id="i10" class="altColor">
<td class="colFirst"><code>private void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#updateCounters--">updateCounters</a></span>()</code>
<div class="block">If hbase runs on new version of mapreduce, RecordReader has access to
counters thus can update counters based on scanMetrics.</div>
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<tr id="i11" class="rowColor">
<td class="colFirst"><code>protected static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#updateCounters-org.apache.hadoop.hbase.client.metrics.ScanMetrics-long-java.lang.reflect.Method-org.apache.hadoop.mapreduce.TaskAttemptContext-long-">updateCounters</a></span>(<a href="../../../../../org/apache/hadoop/hbase/client/metrics/ScanMetrics.html" title="class in org.apache.hadoop.hbase.client.metrics">ScanMetrics</a>&nbsp;scanMetrics,
long&nbsp;numScannerRestarts,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Method.html?is-external=true" title="class or interface in java.lang.reflect">Method</a>&nbsp;getCounter,
org.apache.hadoop.mapreduce.TaskAttemptContext&nbsp;context,
long&nbsp;numStale)</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;
<div class="block"><span class="deprecationComment">since 2.4.0 and 2.3.2, will be removed in 4.0.0
Use <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#updateCounters-org.apache.hadoop.hbase.client.metrics.ScanMetrics-long-org.apache.hadoop.mapreduce.TaskAttemptContext-long-"><code>updateCounters(ScanMetrics, long, TaskAttemptContext, long)</code></a> instead.</span></div>
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<tr id="i12" class="altColor">
<td class="colFirst"><code>protected static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#updateCounters-org.apache.hadoop.hbase.client.metrics.ScanMetrics-long-org.apache.hadoop.mapreduce.TaskAttemptContext-long-">updateCounters</a></span>(<a href="../../../../../org/apache/hadoop/hbase/client/metrics/ScanMetrics.html" title="class in org.apache.hadoop.hbase.client.metrics">ScanMetrics</a>&nbsp;scanMetrics,
long&nbsp;numScannerRestarts,
org.apache.hadoop.mapreduce.TaskAttemptContext&nbsp;context,
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<h3>Methods inherited from class&nbsp;java.lang.<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></h3>
<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li>
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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/mapreduce/TableRecordReaderImpl.html#line.48">LOG_PER_ROW_COUNT</a></pre>
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<dd><a href="../../../../../constant-values.html#org.apache.hadoop.hbase.mapreduce.TableRecordReaderImpl.LOG_PER_ROW_COUNT">Constant Field Values</a></dd>
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<pre>private static final&nbsp;org.slf4j.Logger <a href="../../../../../src-html/org/apache/hadoop/hbase/mapreduce/TableRecordReaderImpl.html#line.51">LOG</a></pre>
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<pre>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/mapreduce/TableRecordReaderImpl.html#line.55">HBASE_COUNTER_GROUP_NAME</a></pre>
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