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| <h2 title="Class AlwaysStandByHMaster.AlwaysStandByMasterManager" class="title">Class AlwaysStandByHMaster.AlwaysStandByMasterManager</h2> |
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| <li>org.apache.hadoop.hbase.zookeeper.ZKListener</li> |
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| <li>org.apache.hadoop.hbase.master.ActiveMasterManager</li> |
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| <pre>private static class <a href="../../../../../src-html/org/apache/hadoop/hbase/master/AlwaysStandByHMaster.html#line.46">AlwaysStandByHMaster.AlwaysStandByMasterManager</a> |
| extends org.apache.hadoop.hbase.master.ActiveMasterManager</pre> |
| <div class="block">An implementation of ActiveMasterManager that never transitions it's master to active state. It |
| always remains as a stand by master. With the master registry implementation (HBASE-18095) it |
| is expected to have at least one active / standby master always running at any point in time |
| since they serve as the gateway for client connections. |
| |
| With this implementation, tests can simulate the scenario of not having an active master yet |
| the client connections to the cluster succeed.</div> |
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| <td class="colFirst"><code>private static org.slf4j.Logger</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/AlwaysStandByHMaster.AlwaysStandByMasterManager.html#LOG">LOG</a></span></code> </td> |
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| <h3>Fields inherited from class org.apache.hadoop.hbase.master.ActiveMasterManager</h3> |
| <code>activeMasterServerName, clusterHasActiveMaster, clusterShutDown, infoPort, master, sn</code></li> |
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| <code>watcher</code></li> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/AlwaysStandByHMaster.AlwaysStandByMasterManager.html#AlwaysStandByMasterManager-org.apache.hadoop.hbase.zookeeper.ZKWatcher-org.apache.hadoop.hbase.ServerName-org.apache.hadoop.hbase.Server-">AlwaysStandByMasterManager</a></span>(org.apache.hadoop.hbase.zookeeper.ZKWatcher watcher, |
| org.apache.hadoop.hbase.ServerName sn, |
| org.apache.hadoop.hbase.Server master)</code> </td> |
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| <td class="colFirst"><code>(package private) boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/AlwaysStandByHMaster.AlwaysStandByMasterManager.html#blockUntilBecomingActiveMaster-int-org.apache.hadoop.hbase.monitoring.MonitoredTask-">blockUntilBecomingActiveMaster</a></span>(int checkInterval, |
| org.apache.hadoop.hbase.monitoring.MonitoredTask startupStatus)</code> |
| <div class="block">An implementation that never transitions to an active master.</div> |
| </td> |
| </tr> |
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| <!-- --> |
| </a> |
| <h3>Methods inherited from class org.apache.hadoop.hbase.master.ActiveMasterManager</h3> |
| <code>getActiveMasterServerName, getBackupMasters, handle, hasActiveMaster, nodeChildrenChanged, nodeCreated, nodeDeleted, setInfoPort, stop</code></li> |
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| <code>getWatcher, nodeDataChanged</code></li> |
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| <h4>LOG</h4> |
| <pre>private static final org.slf4j.Logger <a href="../../../../../src-html/org/apache/hadoop/hbase/master/AlwaysStandByHMaster.AlwaysStandByMasterManager.html#line.47">LOG</a></pre> |
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| <h4>AlwaysStandByMasterManager</h4> |
| <pre><a href="../../../../../src-html/org/apache/hadoop/hbase/master/AlwaysStandByHMaster.AlwaysStandByMasterManager.html#line.50">AlwaysStandByMasterManager</a>(org.apache.hadoop.hbase.zookeeper.ZKWatcher watcher, |
| org.apache.hadoop.hbase.ServerName sn, |
| org.apache.hadoop.hbase.Server master) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/InterruptedIOException.html?is-external=true" title="class or interface in java.io">InterruptedIOException</a></pre> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/InterruptedIOException.html?is-external=true" title="class or interface in java.io">InterruptedIOException</a></code></dd> |
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| <h4>blockUntilBecomingActiveMaster</h4> |
| <pre>boolean <a href="../../../../../src-html/org/apache/hadoop/hbase/master/AlwaysStandByHMaster.AlwaysStandByMasterManager.html#line.58">blockUntilBecomingActiveMaster</a>(int checkInterval, |
| org.apache.hadoop.hbase.monitoring.MonitoredTask startupStatus)</pre> |
| <div class="block">An implementation that never transitions to an active master.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code>blockUntilBecomingActiveMaster</code> in class <code>org.apache.hadoop.hbase.master.ActiveMasterManager</code></dd> |
| </dl> |
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