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| <h2 title="Class RoundRobinTableInputFormat" class="title">Class RoundRobinTableInputFormat</h2> |
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| <ul class="inheritance"> |
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| <li> |
| <ul class="inheritance"> |
| <li>org.apache.hadoop.mapreduce.InputFormat<<a href="../../../../../org/apache/hadoop/hbase/io/ImmutableBytesWritable.html" title="class in org.apache.hadoop.hbase.io">ImmutableBytesWritable</a>,<a href="../../../../../org/apache/hadoop/hbase/client/Result.html" title="class in org.apache.hadoop.hbase.client">Result</a>></li> |
| <li> |
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| <li><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormatBase.html" title="class in org.apache.hadoop.hbase.mapreduce">org.apache.hadoop.hbase.mapreduce.TableInputFormatBase</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html" title="class in org.apache.hadoop.hbase.mapreduce">org.apache.hadoop.hbase.mapreduce.TableInputFormat</a></li> |
| <li> |
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| <li>org.apache.hadoop.hbase.mapreduce.RoundRobinTableInputFormat</li> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd>org.apache.hadoop.conf.Configurable</dd> |
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| <br> |
| <pre>@InterfaceAudience.Public |
| public class <a href="../../../../../src-html/org/apache/hadoop/hbase/mapreduce/RoundRobinTableInputFormat.html#line.49">RoundRobinTableInputFormat</a> |
| extends <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html" title="class in org.apache.hadoop.hbase.mapreduce">TableInputFormat</a></pre> |
| <div class="block">Process the return from super-class <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html" title="class in org.apache.hadoop.hbase.mapreduce"><code>TableInputFormat</code></a> (TIF) so as to undo any clumping of |
| <code>InputSplit</code>s around RegionServers. Spread splits broadly to distribute read-load over |
| RegionServers in the cluster. The super-class TIF returns splits in hbase:meta table order. |
| Adjacent or near-adjacent hbase:meta Regions can be hosted on the same RegionServer -- nothing |
| prevents this. This hbase:maeta ordering of InputSplit placement can be lumpy making it so some |
| RegionServers end up hosting lots of InputSplit scans while contemporaneously other RegionServers |
| host few or none. This class does a pass over the return from the super-class to better spread |
| the load. See the below helpful Flipkart blog post for a description and from where the base of |
| this code comes from (with permission).</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><code>https://tech.flipkart.com/is-data-locality-always-out-of-the-box-in-hadoop-not-really-2ae9c95163cb</code></dd> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
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| </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/RoundRobinTableInputFormat.html#HBASE_REGIONSIZECALCULATOR_ENABLE">HBASE_REGIONSIZECALCULATOR_ENABLE</a></span></code> |
| <div class="block">Boolean config for whether superclass should produce InputSplits with 'lengths'.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/RoundRobinTableInputFormat.html#hbaseRegionsizecalculatorEnableOriginalValue">hbaseRegionsizecalculatorEnableOriginalValue</a></span></code> </td> |
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| <h3>Fields inherited from class org.apache.hadoop.hbase.mapreduce.<a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html" title="class in org.apache.hadoop.hbase.mapreduce">TableInputFormat</a></h3> |
| <code><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html#INPUT_TABLE">INPUT_TABLE</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html#SCAN">SCAN</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html#SCAN_BATCHSIZE">SCAN_BATCHSIZE</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html#SCAN_CACHEBLOCKS">SCAN_CACHEBLOCKS</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html#SCAN_CACHEDROWS">SCAN_CACHEDROWS</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html#SCAN_COLUMN_FAMILY">SCAN_COLUMN_FAMILY</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html#SCAN_COLUMNS">SCAN_COLUMNS</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html#SCAN_MAXVERSIONS">SCAN_MAXVERSIONS</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html#SCAN_ROW_START">SCAN_ROW_START</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html#SCAN_ROW_STOP">SCAN_ROW_STOP</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html#SCAN_TIMERANGE_END">SCAN_TIMERANGE_END</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html#SCAN_TIMERANGE_START">SCAN_TIMERANGE_START</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html#SCAN_TIMESTAMP">SCAN_TIMESTAMP</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html#SHUFFLE_MAPS">SHUFFLE_MAPS</a></code></li> |
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| <h3>Fields inherited from class org.apache.hadoop.hbase.mapreduce.<a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormatBase.html" title="class in org.apache.hadoop.hbase.mapreduce">TableInputFormatBase</a></h3> |
| <code><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormatBase.html#MAPREDUCE_INPUT_AUTOBALANCE">MAPREDUCE_INPUT_AUTOBALANCE</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormatBase.html#MAX_AVERAGE_REGION_SIZE">MAX_AVERAGE_REGION_SIZE</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormatBase.html#NUM_MAPPERS_PER_REGION">NUM_MAPPERS_PER_REGION</a></code></li> |
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| <h3>Constructor Summary</h3> |
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| <tr> |
| <th class="colOne" scope="col">Constructor and Description</th> |
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| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/RoundRobinTableInputFormat.html#RoundRobinTableInputFormat--">RoundRobinTableInputFormat</a></span>()</code> </td> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <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>(package private) void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/RoundRobinTableInputFormat.html#configure--">configure</a></span>()</code> |
| <div class="block">Adds a configuration to the Context disabling remote rpc'ing to figure Region size |
| when calculating InputSplits.</div> |
| </td> |
| </tr> |
| <tr id="i1" 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><org.apache.hadoop.mapreduce.InputSplit></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/RoundRobinTableInputFormat.html#getSplits-org.apache.hadoop.mapreduce.JobContext-">getSplits</a></span>(org.apache.hadoop.mapreduce.JobContext context)</code> |
| <div class="block">Calculates the splits that will serve as input for the map tasks.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>(package private) <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><org.apache.hadoop.mapreduce.InputSplit></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/RoundRobinTableInputFormat.html#getSuperSplits-org.apache.hadoop.mapreduce.JobContext-">getSuperSplits</a></span>(org.apache.hadoop.mapreduce.JobContext context)</code> |
| <div class="block">Call super-classes' getSplits.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/RoundRobinTableInputFormat.html#main-java.lang.String:A-">main</a></span>(<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>[] args)</code> |
| <div class="block">Pass table name as argument.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>(package private) <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><org.apache.hadoop.mapreduce.InputSplit></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/mapreduce/RoundRobinTableInputFormat.html#roundRobin-java.util.List-">roundRobin</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><org.apache.hadoop.mapreduce.InputSplit> inputs)</code> |
| <div class="block">Spread the splits list so as to avoid clumping on RegionServers.</div> |
| </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/mapreduce/RoundRobinTableInputFormat.html#unconfigure--">unconfigure</a></span>()</code> </td> |
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| <h3>Methods inherited from class org.apache.hadoop.hbase.mapreduce.<a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html" title="class in org.apache.hadoop.hbase.mapreduce">TableInputFormat</a></h3> |
| <code><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html#addColumns-org.apache.hadoop.hbase.client.Scan-byte:A:A-">addColumns</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html#configureSplitTable-org.apache.hadoop.mapreduce.Job-org.apache.hadoop.hbase.TableName-">configureSplitTable</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html#createScanFromConfiguration-org.apache.hadoop.conf.Configuration-">createScanFromConfiguration</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html#getConf--">getConf</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html#getStartEndKeys--">getStartEndKeys</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html#initialize-org.apache.hadoop.mapreduce.JobContext-">initialize</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html#setConf-org.apache.hadoop.conf.Configuration-">setConf</a></code></li> |
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| <h3>Methods inherited from class org.apache.hadoop.hbase.mapreduce.<a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormatBase.html" title="class in org.apache.hadoop.hbase.mapreduce">TableInputFormatBase</a></h3> |
| <code><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormatBase.html#calculateAutoBalancedSplits-java.util.List-long-">calculateAutoBalancedSplits</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormatBase.html#closeTable--">closeTable</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormatBase.html#createNInputSplitsUniform-org.apache.hadoop.mapreduce.InputSplit-int-">createNInputSplitsUniform</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormatBase.html#createRecordReader-org.apache.hadoop.mapreduce.InputSplit-org.apache.hadoop.mapreduce.TaskAttemptContext-">createRecordReader</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormatBase.html#createRegionSizeCalculator-org.apache.hadoop.hbase.client.RegionLocator-org.apache.hadoop.hbase.client.Admin-">createRegionSizeCalculator</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormatBase.html#getAdmin--">getAdmin</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormatBase.html#getRegionLocator--">getRegionLocator</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormatBase.html#getScan--">getScan</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormatBase.html#getTable--">getTable</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormatBase.html#includeRegionInSplit-byte:A-byte:A-">includeRegionInSplit</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormatBase.html#initializeTable-org.apache.hadoop.hbase.client.Connection-org.apache.hadoop.hbase.TableName-">initializeTable</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormatBase.html#reverseDNS-java.net.InetAddress-">reverseDNS</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormatBase.html#setScan-org.apache.hadoop.hbase.client.Scan-">setScan</a>, <a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormatBase.html#setTableRecordReader-org.apache.hadoop.hbase.mapreduce.TableRecordReader-">setTableRecordReader</a></code></li> |
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| <pre>private <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/mapreduce/RoundRobinTableInputFormat.html#line.50">hbaseRegionsizecalculatorEnableOriginalValue</a></pre> |
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| <h4>HBASE_REGIONSIZECALCULATOR_ENABLE</h4> |
| <pre>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> <a href="../../../../../src-html/org/apache/hadoop/hbase/mapreduce/RoundRobinTableInputFormat.html#line.59">HBASE_REGIONSIZECALCULATOR_ENABLE</a></pre> |
| <div class="block">Boolean config for whether superclass should produce InputSplits with 'lengths'. If true, TIF |
| will query every RegionServer to get the 'size' of all involved Regions and this 'size' will |
| be used the the InputSplit length. If false, we skip this query and the super-classes |
| returned InputSplits will have lenghths of zero. This override will set the flag to false. |
| All returned lengths will be zero. Makes it so sorting on 'length' becomes a noop. The sort |
| returned by this override will prevail. Thats what we want.</div> |
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| <h3>Constructor Detail</h3> |
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| <h4>RoundRobinTableInputFormat</h4> |
| <pre>public <a href="../../../../../src-html/org/apache/hadoop/hbase/mapreduce/RoundRobinTableInputFormat.html#line.49">RoundRobinTableInputFormat</a>()</pre> |
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| <a name="getSplits-org.apache.hadoop.mapreduce.JobContext-"> |
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| <h4>getSplits</h4> |
| <pre>public <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><org.apache.hadoop.mapreduce.InputSplit> <a href="../../../../../src-html/org/apache/hadoop/hbase/mapreduce/RoundRobinTableInputFormat.html#line.62">getSplits</a>(org.apache.hadoop.mapreduce.JobContext context) |
| 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"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html#getSplits-org.apache.hadoop.mapreduce.JobContext-">TableInputFormat</a></code></span></div> |
| <div class="block">Calculates the splits that will serve as input for the map tasks. The |
| number of splits matches the number of regions in a table. Splits are shuffled if |
| required.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html#getSplits-org.apache.hadoop.mapreduce.JobContext-">getSplits</a></code> in class <code><a href="../../../../../org/apache/hadoop/hbase/mapreduce/TableInputFormat.html" title="class in org.apache.hadoop.hbase.mapreduce">TableInputFormat</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>context</code> - The current job context.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The list of input splits.</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> - When creating the list of splits fails.</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><code>InputFormat.getSplits( |
| org.apache.hadoop.mapreduce.JobContext)</code></dd> |
| </dl> |
| </li> |
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| <h4>getSuperSplits</h4> |
| <pre><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><org.apache.hadoop.mapreduce.InputSplit> <a href="../../../../../src-html/org/apache/hadoop/hbase/mapreduce/RoundRobinTableInputFormat.html#line.75">getSuperSplits</a>(org.apache.hadoop.mapreduce.JobContext context) |
| 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">Call super-classes' getSplits. Have it out here as its own method so can be overridden.</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> |
| </dl> |
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| <h4>roundRobin</h4> |
| <pre><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><org.apache.hadoop.mapreduce.InputSplit> <a href="../../../../../src-html/org/apache/hadoop/hbase/mapreduce/RoundRobinTableInputFormat.html#line.84">roundRobin</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><org.apache.hadoop.mapreduce.InputSplit> inputs) |
| 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">Spread the splits list so as to avoid clumping on RegionServers. Order splits so every server |
| gets one split before a server gets a second, and so on; i.e. round-robin the splits amongst |
| the servers in the cluster.</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> |
| </dl> |
| </li> |
| </ul> |
| <a name="configure--"> |
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| <h4>configure</h4> |
| <pre>void <a href="../../../../../src-html/org/apache/hadoop/hbase/mapreduce/RoundRobinTableInputFormat.html#line.135">configure</a>()</pre> |
| <div class="block">Adds a configuration to the Context disabling remote rpc'ing to figure Region size |
| when calculating InputSplits. See up in super-class TIF where we rpc to every server to find |
| the size of all involved Regions. Here we disable this super-class action. This means |
| InputSplits will have a length of zero. If all InputSplits have zero-length InputSplits, the |
| ordering done in here will 'pass-through' Hadoop's length-first sort. The superclass TIF will |
| ask every node for the current size of each of the participating Table Regions. It does this |
| because it wants to schedule the biggest Regions first (This fixation comes of hadoop itself |
| -- see JobSubmitter where it sorts inputs by size). This extra diligence takes time and is of |
| no utility in this RRTIF where spread is of more import than size-first. Also, if a rolling |
| restart is happening when we go to launch the job, the job launch may fail because the request |
| for Region size fails -- even after retries -- because rolled RegionServer may take a while to |
| come online: e.g. it takes java 90 seconds to allocate a 160G. RegionServer is offline during |
| this time. The job launch will fail with 'Connection rejected'. So, we set |
| 'hbase.regionsizecalculator.enable' to false here in RRTIF.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../org/apache/hadoop/hbase/mapreduce/RoundRobinTableInputFormat.html#unconfigure--"><code>unconfigure()</code></a></dd> |
| </dl> |
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| <h4>unconfigure</h4> |
| <pre>void <a href="../../../../../src-html/org/apache/hadoop/hbase/mapreduce/RoundRobinTableInputFormat.html#line.146">unconfigure</a>()</pre> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../org/apache/hadoop/hbase/mapreduce/RoundRobinTableInputFormat.html#configure--"><code>configure()</code></a></dd> |
| </dl> |
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| <pre>public static void <a href="../../../../../src-html/org/apache/hadoop/hbase/mapreduce/RoundRobinTableInputFormat.html#line.159">main</a>(<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>[] args) |
| 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">Pass table name as argument. Set the zk ensemble to use with the System property |
| 'hbase.zookeeper.quorum'</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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