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| <pre>@InterfaceAudience.Public |
| public interface <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegionLocator.html#line.39">RegionLocator</a> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/io/Closeable.html?is-external=true" title="class or interface in java.io">Closeable</a></pre> |
| <div class="block">Used to view region location information for a single HBase table. Obtain an instance from an |
| <a href="../../../../../org/apache/hadoop/hbase/client/Connection.html" title="interface in org.apache.hadoop.hbase.client"><code>Connection</code></a>.</div> |
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| <dd>0.99.0</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../org/apache/hadoop/hbase/client/ConnectionFactory.html" title="class in org.apache.hadoop.hbase.client"><code>ConnectionFactory</code></a>, |
| <a href="../../../../../org/apache/hadoop/hbase/client/Connection.html" title="interface in org.apache.hadoop.hbase.client"><code>Connection</code></a>, |
| <a href="../../../../../org/apache/hadoop/hbase/client/Table.html" title="interface in org.apache.hadoop.hbase.client"><code>Table</code></a></dd> |
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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="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd"> </span></span><span id="t5" class="tableTab"><span><a href="javascript:show(16);">Default Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
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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/client/RegionLocator.html#clearRegionLocationCache--">clearRegionLocationCache</a></span>()</code> |
| <div class="block">Clear all the entries in the region location cache.</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><<a href="../../../../../org/apache/hadoop/hbase/HRegionLocation.html" title="class in org.apache.hadoop.hbase">HRegionLocation</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/RegionLocator.html#getAllRegionLocations--">getAllRegionLocations</a></span>()</code> |
| <div class="block">Retrieves all of the regions associated with this table.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>default byte[][]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/RegionLocator.html#getEndKeys--">getEndKeys</a></span>()</code> |
| <div class="block">Gets the ending row key for every region in the currently open table.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/hadoop/hbase/TableName.html" title="class in org.apache.hadoop.hbase">TableName</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/RegionLocator.html#getName--">getName</a></span>()</code> |
| <div class="block">Gets the fully qualified table name instance of this table.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>default <a href="../../../../../org/apache/hadoop/hbase/HRegionLocation.html" title="class in org.apache.hadoop.hbase">HRegionLocation</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/RegionLocator.html#getRegionLocation-byte:A-">getRegionLocation</a></span>(byte[] row)</code> |
| <div class="block">Finds the region on which the given row is being served.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>default <a href="../../../../../org/apache/hadoop/hbase/HRegionLocation.html" title="class in org.apache.hadoop.hbase">HRegionLocation</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/RegionLocator.html#getRegionLocation-byte:A-boolean-">getRegionLocation</a></span>(byte[] row, |
| boolean reload)</code> |
| <div class="block">Finds the region on which the given row is being served.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>default <a href="../../../../../org/apache/hadoop/hbase/HRegionLocation.html" title="class in org.apache.hadoop.hbase">HRegionLocation</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/RegionLocator.html#getRegionLocation-byte:A-int-">getRegionLocation</a></span>(byte[] row, |
| int replicaId)</code> |
| <div class="block">Finds the region with the given replica id on which the given row is being served.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/hadoop/hbase/HRegionLocation.html" title="class in org.apache.hadoop.hbase">HRegionLocation</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/RegionLocator.html#getRegionLocation-byte:A-int-boolean-">getRegionLocation</a></span>(byte[] row, |
| int replicaId, |
| boolean reload)</code> |
| <div class="block">Finds the region with the given replica id on which the given row is being served.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>default <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><<a href="../../../../../org/apache/hadoop/hbase/HRegionLocation.html" title="class in org.apache.hadoop.hbase">HRegionLocation</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/RegionLocator.html#getRegionLocations-byte:A-">getRegionLocations</a></span>(byte[] row)</code> |
| <div class="block">Find all the replicas for the region on which the given row is being served.</div> |
| </td> |
| </tr> |
| <tr id="i9" 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><<a href="../../../../../org/apache/hadoop/hbase/HRegionLocation.html" title="class in org.apache.hadoop.hbase">HRegionLocation</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/RegionLocator.html#getRegionLocations-byte:A-boolean-">getRegionLocations</a></span>(byte[] row, |
| boolean reload)</code> |
| <div class="block">Find all the replicas for the region on which the given row is being served.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>default <a href="../../../../../org/apache/hadoop/hbase/util/Pair.html" title="class in org.apache.hadoop.hbase.util">Pair</a><byte[][],byte[][]></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/RegionLocator.html#getStartEndKeys--">getStartEndKeys</a></span>()</code> |
| <div class="block">Gets the starting and ending row keys for every region in the currently open table.</div> |
| </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>default byte[][]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/RegionLocator.html#getStartKeys--">getStartKeys</a></span>()</code> |
| <div class="block">Gets the starting row key for every region in the currently open table.</div> |
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| <h3>Methods inherited from interface java.io.<a href="https://docs.oracle.com/javase/8/docs/api/java/io/Closeable.html?is-external=true" title="class or interface in java.io">Closeable</a></h3> |
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| <h4>getRegionLocation</h4> |
| <pre>default <a href="../../../../../org/apache/hadoop/hbase/HRegionLocation.html" title="class in org.apache.hadoop.hbase">HRegionLocation</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegionLocator.html#line.46">getRegionLocation</a>(byte[] row) |
| 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">Finds the region on which the given row is being served. Does not reload the cache.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>row</code> - Row to find.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Location of the row.</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> - if a remote or network exception occurs</dd> |
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| <h4>getRegionLocation</h4> |
| <pre>default <a href="../../../../../org/apache/hadoop/hbase/HRegionLocation.html" title="class in org.apache.hadoop.hbase">HRegionLocation</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegionLocator.html#line.57">getRegionLocation</a>(byte[] row, |
| boolean reload) |
| 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">Finds the region on which the given row is being served.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>row</code> - Row to find.</dd> |
| <dd><code>reload</code> - true to reload information or false to use cached information</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Location of the row.</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> - if a remote or network exception occurs</dd> |
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| <pre>default <a href="../../../../../org/apache/hadoop/hbase/HRegionLocation.html" title="class in org.apache.hadoop.hbase">HRegionLocation</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegionLocator.html#line.68">getRegionLocation</a>(byte[] row, |
| int replicaId) |
| 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">Finds the region with the given replica id on which the given row is being served.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>row</code> - Row to find.</dd> |
| <dd><code>replicaId</code> - the replica id</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Location of the row.</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> - if a remote or network exception occurs</dd> |
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| <pre><a href="../../../../../org/apache/hadoop/hbase/HRegionLocation.html" title="class in org.apache.hadoop.hbase">HRegionLocation</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegionLocator.html#line.80">getRegionLocation</a>(byte[] row, |
| int replicaId, |
| boolean reload) |
| 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">Finds the region with the given replica id on which the given row is being served.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>row</code> - Row to find.</dd> |
| <dd><code>replicaId</code> - the replica id</dd> |
| <dd><code>reload</code> - true to reload information or false to use cached information</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Location of the row.</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> - if a remote or network exception occurs</dd> |
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| <pre>default <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><<a href="../../../../../org/apache/hadoop/hbase/HRegionLocation.html" title="class in org.apache.hadoop.hbase">HRegionLocation</a>> <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegionLocator.html#line.88">getRegionLocations</a>(byte[] row) |
| 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">Find all the replicas for the region on which the given row is being served.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>row</code> - Row to find.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Locations for all the replicas of the row.</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> - if a remote or network exception occurs</dd> |
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| <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><<a href="../../../../../org/apache/hadoop/hbase/HRegionLocation.html" title="class in org.apache.hadoop.hbase">HRegionLocation</a>> <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegionLocator.html#line.99">getRegionLocations</a>(byte[] row, |
| boolean reload) |
| 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">Find all the replicas for the region on which the given row is being served.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>row</code> - Row to find.</dd> |
| <dd><code>reload</code> - true to reload information or false to use cached information</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Locations for all the replicas of the row.</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> - if a remote or network exception occurs</dd> |
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| <pre>void <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegionLocator.html#line.106">clearRegionLocationCache</a>()</pre> |
| <div class="block">Clear all the entries in the region location cache. |
| <p/> |
| This may cause performance issue so use it with caution.</div> |
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| <h4>getAllRegionLocations</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><<a href="../../../../../org/apache/hadoop/hbase/HRegionLocation.html" title="class in org.apache.hadoop.hbase">HRegionLocation</a>> <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegionLocator.html#line.118">getAllRegionLocations</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">Retrieves all of the regions associated with this table. |
| <p/> |
| Usually we will go to meta table directly in this method so there is no <code>reload</code> |
| parameter. |
| <p/> |
| Notice that the location for region replicas other than the default replica are also returned.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>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"><code>List</code></a> of all regions associated with this table.</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> - if a remote or network exception occurs</dd> |
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| <h4>getStartKeys</h4> |
| <pre>default byte[][] <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegionLocator.html#line.127">getStartKeys</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">Gets the starting row key for every region in the currently open table. |
| <p> |
| This is mainly useful for the MapReduce integration.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Array of region starting row keys</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> - if a remote or network exception occurs</dd> |
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| <h4>getEndKeys</h4> |
| <pre>default byte[][] <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegionLocator.html#line.138">getEndKeys</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">Gets the ending row key for every region in the currently open table. |
| <p> |
| This is mainly useful for the MapReduce integration.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Array of region ending row keys</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> - if a remote or network exception occurs</dd> |
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| <h4>getStartEndKeys</h4> |
| <pre>default <a href="../../../../../org/apache/hadoop/hbase/util/Pair.html" title="class in org.apache.hadoop.hbase.util">Pair</a><byte[][],byte[][]> <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegionLocator.html#line.149">getStartEndKeys</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">Gets the starting and ending row keys for every region in the currently open table. |
| <p> |
| This is mainly useful for the MapReduce integration.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Pair of arrays of region starting and ending row keys</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> - if a remote or network exception occurs</dd> |
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| <h4>getName</h4> |
| <pre><a href="../../../../../org/apache/hadoop/hbase/TableName.html" title="class in org.apache.hadoop.hbase">TableName</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegionLocator.html#line.166">getName</a>()</pre> |
| <div class="block">Gets the fully qualified table name instance of this table.</div> |
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