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| <h2 title="Interface AsyncTableRegionLocator" class="title">Interface AsyncTableRegionLocator</h2> |
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| <pre>@InterfaceAudience.Public |
| public interface <a href="../../../../../src-html/org/apache/hadoop/hbase/client/AsyncTableRegionLocator.html#line.36">AsyncTableRegionLocator</a></pre> |
| <div class="block">The asynchronous version of RegionLocator. |
| <p> |
| Usually the implementations will not throw any exception directly, you need to get the exception |
| from the returned <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CompletableFuture.html?is-external=true" title="class or interface in java.util.concurrent"><code>CompletableFuture</code></a>.</div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>2.0.0</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> |
| <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/client/AsyncTableRegionLocator.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/concurrent/CompletableFuture.html?is-external=true" title="class or interface in java.util.concurrent">CompletableFuture</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><<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/AsyncTableRegionLocator.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 <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CompletableFuture.html?is-external=true" title="class or interface in java.util.concurrent">CompletableFuture</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><byte[]>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/AsyncTableRegionLocator.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/AsyncTableRegionLocator.html#getName--">getName</a></span>()</code> |
| <div class="block">Gets the fully qualified table name instance of the table whose region we want to locate.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>default <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CompletableFuture.html?is-external=true" title="class or interface in java.util.concurrent">CompletableFuture</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/AsyncTableRegionLocator.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="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CompletableFuture.html?is-external=true" title="class or interface in java.util.concurrent">CompletableFuture</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/AsyncTableRegionLocator.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="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CompletableFuture.html?is-external=true" title="class or interface in java.util.concurrent">CompletableFuture</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/AsyncTableRegionLocator.html#getRegionLocation-byte:A-int-">getRegionLocation</a></span>(byte[] row, |
| int replicaId)</code> |
| <div class="block">Finds the region with the given <code>replicaId</code> on which the given row is being served.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CompletableFuture.html?is-external=true" title="class or interface in java.util.concurrent">CompletableFuture</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/AsyncTableRegionLocator.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 <code>replicaId</code> 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/concurrent/CompletableFuture.html?is-external=true" title="class or interface in java.util.concurrent">CompletableFuture</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><<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/AsyncTableRegionLocator.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/concurrent/CompletableFuture.html?is-external=true" title="class or interface in java.util.concurrent">CompletableFuture</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><<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/AsyncTableRegionLocator.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="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CompletableFuture.html?is-external=true" title="class or interface in java.util.concurrent">CompletableFuture</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><<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/AsyncTableRegionLocator.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 <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CompletableFuture.html?is-external=true" title="class or interface in java.util.concurrent">CompletableFuture</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><byte[]>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/AsyncTableRegionLocator.html#getStartKeys--">getStartKeys</a></span>()</code> |
| <div class="block">Gets the starting row key for every region in the currently open table.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
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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/AsyncTableRegionLocator.html#line.41">getName</a>()</pre> |
| <div class="block">Gets the fully qualified table name instance of the table whose region we want to locate.</div> |
| </li> |
| </ul> |
| <a name="getRegionLocation-byte:A-"> |
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| <h4>getRegionLocation</h4> |
| <pre>default <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CompletableFuture.html?is-external=true" title="class or interface in java.util.concurrent">CompletableFuture</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/AsyncTableRegionLocator.html#line.49">getRegionLocation</a>(byte[] row)</pre> |
| <div class="block">Finds the region on which the given row is being served. Does not reload the cache. |
| <p/> |
| Returns the location of the region to which the row belongs.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>row</code> - Row to find.</dd> |
| </dl> |
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| <pre>default <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CompletableFuture.html?is-external=true" title="class or interface in java.util.concurrent">CompletableFuture</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/AsyncTableRegionLocator.html#line.60">getRegionLocation</a>(byte[] row, |
| boolean reload)</pre> |
| <div class="block">Finds the region on which the given row is being served. |
| <p/> |
| Returns the location of the region to which the row belongs.</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> |
| </dl> |
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| <pre>default <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CompletableFuture.html?is-external=true" title="class or interface in java.util.concurrent">CompletableFuture</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/AsyncTableRegionLocator.html#line.72">getRegionLocation</a>(byte[] row, |
| int replicaId)</pre> |
| <div class="block">Finds the region with the given <code>replicaId</code> on which the given row is being served. |
| <p/> |
| Returns the location of the region with the given <code>replicaId</code> to which the row |
| belongs.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>row</code> - Row to find.</dd> |
| <dd><code>replicaId</code> - the replica id of the region</dd> |
| </dl> |
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| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CompletableFuture.html?is-external=true" title="class or interface in java.util.concurrent">CompletableFuture</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/AsyncTableRegionLocator.html#line.85">getRegionLocation</a>(byte[] row, |
| int replicaId, |
| boolean reload)</pre> |
| <div class="block">Finds the region with the given <code>replicaId</code> on which the given row is being served. |
| <p/> |
| Returns the location of the region with the given <code>replicaId</code> to which the row |
| belongs.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>row</code> - Row to find.</dd> |
| <dd><code>replicaId</code> - the replica id of the region</dd> |
| <dd><code>reload</code> - true to reload information or false to use cached information</dd> |
| </dl> |
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| <pre>default <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CompletableFuture.html?is-external=true" title="class or interface in java.util.concurrent">CompletableFuture</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><<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/AsyncTableRegionLocator.html#line.92">getRegionLocations</a>(byte[] row)</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> |
| </dl> |
| </li> |
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| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CompletableFuture.html?is-external=true" title="class or interface in java.util.concurrent">CompletableFuture</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><<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/AsyncTableRegionLocator.html#line.102">getRegionLocations</a>(byte[] row, |
| boolean reload)</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> |
| </dl> |
| </li> |
| </ul> |
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| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CompletableFuture.html?is-external=true" title="class or interface in java.util.concurrent">CompletableFuture</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><<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/AsyncTableRegionLocator.html#line.113">getAllRegionLocations</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> |
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| <pre>default <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CompletableFuture.html?is-external=true" title="class or interface in java.util.concurrent">CompletableFuture</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><byte[]>> <a href="../../../../../src-html/org/apache/hadoop/hbase/client/AsyncTableRegionLocator.html#line.121">getStartKeys</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> |
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| <pre>default <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CompletableFuture.html?is-external=true" title="class or interface in java.util.concurrent">CompletableFuture</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><byte[]>> <a href="../../../../../src-html/org/apache/hadoop/hbase/client/AsyncTableRegionLocator.html#line.132">getEndKeys</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> |
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| <pre>default <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CompletableFuture.html?is-external=true" title="class or interface in java.util.concurrent">CompletableFuture</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><<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/AsyncTableRegionLocator.html#line.143">getStartEndKeys</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> |
| </dl> |
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| <h4>clearRegionLocationCache</h4> |
| <pre>void <a href="../../../../../src-html/org/apache/hadoop/hbase/client/AsyncTableRegionLocator.html#line.155">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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