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| <h2 title="Class MasterRegistry" class="title">Class MasterRegistry</h2> |
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| <li>org.apache.hadoop.hbase.client.MasterRegistry</li> |
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| <pre>@InterfaceAudience.Private |
| public class <a href="../../../../../src-html/org/apache/hadoop/hbase/client/MasterRegistry.html#line.81">MasterRegistry</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/client/ConnectionRegistry.html" title="interface in org.apache.hadoop.hbase.client">ConnectionRegistry</a></pre> |
| <div class="block">Master based registry implementation. Makes RPCs to the configured master addresses from config |
| <a href="../../../../../org/apache/hadoop/hbase/HConstants.html#MASTER_ADDRS_KEY">"hbase.masters"</a>. |
| <p/> |
| It supports hedged reads, set the fan out of the requests batch by |
| <a href="../../../../../org/apache/hadoop/hbase/client/MasterRegistry.html#MASTER_REGISTRY_HEDGED_REQS_FANOUT_KEY"><code>MASTER_REGISTRY_HEDGED_REQS_FANOUT_KEY</code></a> to a value greater than <code>1</code> will enable |
| it(the default value is <a href="../../../../../org/apache/hadoop/hbase/client/MasterRegistry.html#MASTER_REGISTRY_HEDGED_REQS_FANOUT_DEFAULT"><code>MASTER_REGISTRY_HEDGED_REQS_FANOUT_DEFAULT</code></a>). |
| <p/> |
| TODO: Handle changes to the configuration dynamically without having to restart the client.</div> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Class and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static interface </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/MasterRegistry.Callable.html" title="interface in org.apache.hadoop.hbase.client">MasterRegistry.Callable</a><<a href="../../../../../org/apache/hadoop/hbase/client/MasterRegistry.Callable.html" title="type parameter in MasterRegistry.Callable">T</a>></span></code> |
| <div class="block">For describing the actual asynchronous rpc call.</div> |
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| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Field and Description</th> |
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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/client/MasterRegistry.html#hedgedReadFanOut">hedgedReadFanOut</a></span></code> </td> |
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| <tr class="rowColor"> |
| <td class="colFirst"><code>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/client/MasterRegistry.html#MASTER_ADDRS_CONF_SEPARATOR">MASTER_ADDRS_CONF_SEPARATOR</a></span></code> </td> |
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| <tr class="altColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/MasterRegistry.html#MASTER_REGISTRY_HEDGED_REQS_FANOUT_DEFAULT">MASTER_REGISTRY_HEDGED_REQS_FANOUT_DEFAULT</a></span></code> |
| <div class="block">Default value for the fan out of hedged requests.</div> |
| </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/client/MasterRegistry.html#MASTER_REGISTRY_HEDGED_REQS_FANOUT_KEY">MASTER_REGISTRY_HEDGED_REQS_FANOUT_KEY</a></span></code> |
| <div class="block">Configuration key that controls the fan out of requests</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private org.apache.hbase.thirdparty.com.google.common.collect.ImmutableMap<<a href="../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>,org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.ClientMetaService.Interface></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/MasterRegistry.html#masterAddr2Stub">masterAddr2Stub</a></span></code> </td> |
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| <tr class="rowColor"> |
| <td class="colFirst"><code>protected <a href="../../../../../org/apache/hadoop/hbase/client/MasterAddressRefresher.html" title="class in org.apache.hadoop.hbase.client">MasterAddressRefresher</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/MasterRegistry.html#masterAddressRefresher">masterAddressRefresher</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private <a href="../../../../../org/apache/hadoop/hbase/ipc/RpcClient.html" title="interface in org.apache.hadoop.hbase.ipc">RpcClient</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/MasterRegistry.html#rpcClient">rpcClient</a></span></code> </td> |
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| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="../../../../../org/apache/hadoop/hbase/ipc/RpcControllerFactory.html" title="class in org.apache.hadoop.hbase.ipc">RpcControllerFactory</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/MasterRegistry.html#rpcControllerFactory">rpcControllerFactory</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/MasterRegistry.html#rpcTimeoutMs">rpcTimeoutMs</a></span></code> </td> |
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| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <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/client/MasterRegistry.html#MasterRegistry-org.apache.hadoop.conf.Configuration-">MasterRegistry</a></span>(org.apache.hadoop.conf.Configuration conf)</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> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>private <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></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/MasterRegistry.html#badResponse-java.lang.String-">badResponse</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> debug)</code> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>private <T extends org.apache.hbase.thirdparty.com.google.protobuf.Message><br><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><T></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/MasterRegistry.html#call-org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.ClientMetaService.Interface-org.apache.hadoop.hbase.client.MasterRegistry.Callable-">call</a></span>(org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.ClientMetaService.Interface stub, |
| <a href="../../../../../org/apache/hadoop/hbase/client/MasterRegistry.Callable.html" title="interface in org.apache.hadoop.hbase.client">MasterRegistry.Callable</a><T> callable)</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>private <T extends org.apache.hbase.thirdparty.com.google.protobuf.Message><br><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><T></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/MasterRegistry.html#call-org.apache.hadoop.hbase.client.MasterRegistry.Callable-java.util.function.Predicate-java.lang.String-">call</a></span>(<a href="../../../../../org/apache/hadoop/hbase/client/MasterRegistry.Callable.html" title="interface in org.apache.hadoop.hbase.client">MasterRegistry.Callable</a><T> callable, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/function/Predicate.html?is-external=true" title="class or interface in java.util.function">Predicate</a><T> isValidResp, |
| <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> debug)</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/MasterRegistry.html#close--">close</a></span>()</code> |
| <div class="block">Closes this instance and releases any system resources associated with it</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>private static <a href="../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/MasterRegistry.html#filterActiveMaster-org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.GetMastersResponse-">filterActiveMaster</a></span>(org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.GetMastersResponse resp)</code> </td> |
| </tr> |
| <tr id="i5" 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/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/MasterRegistry.html#getActiveMaster--">getActiveMaster</a></span>()</code> |
| <div class="block">Get the address of active HMaster.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <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/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/client/MasterRegistry.html#getClusterId--">getClusterId</a></span>()</code> |
| <div class="block">Should only be called once.</div> |
| </td> |
| </tr> |
| <tr id="i7" 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/client/MasterRegistry.html#getMasterAddr-org.apache.hadoop.conf.Configuration-">getMasterAddr</a></span>(org.apache.hadoop.conf.Configuration conf)</code> |
| <div class="block">Builds the default master address end point if it is not specified in the configuration.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>(package private) <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/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/MasterRegistry.html#getMasters--">getMasters</a></span>()</code> </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="../../../../../org/apache/hadoop/hbase/RegionLocations.html" title="class in org.apache.hadoop.hbase">RegionLocations</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/MasterRegistry.html#getMetaRegionLocations--">getMetaRegionLocations</a></span>()</code> |
| <div class="block">Get the location of meta region(s).</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>(package private) <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util">Set</a><<a href="../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/MasterRegistry.html#getParsedMasterServers--">getParsedMasterServers</a></span>()</code> </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>private <T extends org.apache.hbase.thirdparty.com.google.protobuf.Message><br>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/MasterRegistry.html#groupCall-java.util.concurrent.CompletableFuture-java.util.Set-java.util.List-int-org.apache.hadoop.hbase.client.MasterRegistry.Callable-java.util.function.Predicate-java.lang.String-java.util.concurrent.ConcurrentLinkedQueue-">groupCall</a></span>(<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><T> future, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util">Set</a><<a href="../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> masterServers, |
| <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.hbase.shaded.protobuf.generated.MasterProtos.ClientMetaService.Interface> masterStubs, |
| int startIndexInclusive, |
| <a href="../../../../../org/apache/hadoop/hbase/client/MasterRegistry.Callable.html" title="interface in org.apache.hadoop.hbase.client">MasterRegistry.Callable</a><T> callable, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/function/Predicate.html?is-external=true" title="class or interface in java.util.function">Predicate</a><T> isValidResp, |
| <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> debug, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ConcurrentLinkedQueue.html?is-external=true" title="class or interface in java.util.concurrent">ConcurrentLinkedQueue</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a>> errors)</code> |
| <div class="block">send requests concurrently to hedgedReadsFanout masters.</div> |
| </td> |
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| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>conf</code> - Configuration to parse from.</dd> |
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| <dl> |
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| <p/> |
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| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
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| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../org/apache/hadoop/hbase/client/ConnectionRegistry.html#getClusterId--">ConnectionRegistry</a></code></span></div> |
| <div class="block">Should only be called once. |
| <p> |
| The upper layer should store this value somewhere as it will not be change any more.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/hadoop/hbase/client/ConnectionRegistry.html#getClusterId--">getClusterId</a></code> in interface <code><a href="../../../../../org/apache/hadoop/hbase/client/ConnectionRegistry.html" title="interface in org.apache.hadoop.hbase.client">ConnectionRegistry</a></code></dd> |
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| <a name="hasActiveMaster-org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.GetMastersResponse-"> |
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| 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> |
| <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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| <pre>public <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/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> <a href="../../../../../src-html/org/apache/hadoop/hbase/client/MasterRegistry.html#line.304">getActiveMaster</a>()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../org/apache/hadoop/hbase/client/ConnectionRegistry.html#getActiveMaster--">ConnectionRegistry</a></code></span></div> |
| <div class="block">Get the address of active HMaster.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/hadoop/hbase/client/ConnectionRegistry.html#getActiveMaster--">getActiveMaster</a></code> in interface <code><a href="../../../../../org/apache/hadoop/hbase/client/ConnectionRegistry.html" title="interface in org.apache.hadoop.hbase.client">ConnectionRegistry</a></code></dd> |
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| <a name="transformServerNames-org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos.GetMastersResponse-"> |
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| <a name="getMasters--"> |
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| <h4>close</h4> |
| <pre>public void <a href="../../../../../src-html/org/apache/hadoop/hbase/client/MasterRegistry.html#line.341">close</a>()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../org/apache/hadoop/hbase/client/ConnectionRegistry.html#close--">ConnectionRegistry</a></code></span></div> |
| <div class="block">Closes this instance and releases any system resources associated with it</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/Closeable.html?is-external=true#close--" title="class or interface in java.io">close</a></code> in interface <code><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></code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true#close--" title="class or interface in java.lang">close</a></code> in interface <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang">AutoCloseable</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/hadoop/hbase/client/ConnectionRegistry.html#close--">close</a></code> in interface <code><a href="../../../../../org/apache/hadoop/hbase/client/ConnectionRegistry.html" title="interface in org.apache.hadoop.hbase.client">ConnectionRegistry</a></code></dd> |
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