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| <h2 title="Class MasterStateStore" class="title">Class MasterStateStore</h2> |
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| <pre>@InterfaceAudience.Private |
| public abstract class <a href="../../../../../src-html/org/apache/hadoop/hbase/master/MasterStateStore.html#line.46">MasterStateStore</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></pre> |
| <div class="block">A state storage which stores the state in master local region. |
| <p/> |
| We used to store some persistent state on zookeeper, so here we provide the ability to migrate |
| the state from zookeeper. |
| <p/> |
| Since parsing the state may introduce some extra overhead, we make this class abstract and the |
| get and set state methods protected. Sub classes should store their state in decoded format to |
| save the extra parsing overhead.</div> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Field and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <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/MasterStateStore.html#LOG">LOG</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="../../../../../org/apache/hadoop/hbase/master/region/MasterRegion.html" title="class in org.apache.hadoop.hbase.master.region">MasterRegion</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/MasterStateStore.html#masterRegion">masterRegion</a></span></code> </td> |
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| <tr class="altColor"> |
| <td class="colFirst"><code>private static byte[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/MasterStateStore.html#QUALIFIER">QUALIFIER</a></span></code> </td> |
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| <tr class="rowColor"> |
| <td class="colFirst"><code>private byte[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/MasterStateStore.html#stateName">stateName</a></span></code> </td> |
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| <th class="colFirst" scope="col">Modifier</th> |
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| <td class="colFirst"><code>protected </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/MasterStateStore.html#MasterStateStore-org.apache.hadoop.hbase.master.region.MasterRegion-java.lang.String-org.apache.hadoop.hbase.zookeeper.ZKWatcher-java.lang.String-">MasterStateStore</a></span>(<a href="../../../../../org/apache/hadoop/hbase/master/region/MasterRegion.html" title="class in org.apache.hadoop.hbase.master.region">MasterRegion</a> masterRegion, |
| <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> stateName, |
| <a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html" title="class in org.apache.hadoop.hbase.zookeeper">ZKWatcher</a> watcher, |
| <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> zkPath)</code> </td> |
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| <th class="colLast" scope="col">Method and Description</th> |
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| <td class="colFirst"><code>private <a href="../../../../../org/apache/hadoop/hbase/client/Result.html" title="class in org.apache.hadoop.hbase.client">Result</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/MasterStateStore.html#get--">get</a></span>()</code> </td> |
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| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>protected byte[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/MasterStateStore.html#getState--">getState</a></span>()</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>private byte[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/MasterStateStore.html#migrate-org.apache.hadoop.hbase.zookeeper.ZKWatcher-java.lang.String-">migrate</a></span>(<a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html" title="class in org.apache.hadoop.hbase.zookeeper">ZKWatcher</a> watcher, |
| <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> zkPath)</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>protected void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/MasterStateStore.html#setState-byte:A-">setState</a></span>(byte[] state)</code> </td> |
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| <td class="colFirst"><code>private void</code></td> |
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| <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> zkPath)</code> </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/MasterStateStore.html#update-byte:A-">update</a></span>(byte[] s)</code> </td> |
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| <h4>LOG</h4> |
| <pre>private static final org.slf4j.Logger <a href="../../../../../src-html/org/apache/hadoop/hbase/master/MasterStateStore.html#line.48">LOG</a></pre> |
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| <h4>masterRegion</h4> |
| <pre>private final <a href="../../../../../org/apache/hadoop/hbase/master/region/MasterRegion.html" title="class in org.apache.hadoop.hbase.master.region">MasterRegion</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/master/MasterStateStore.html#line.52">masterRegion</a></pre> |
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| <pre>protected <a href="../../../../../src-html/org/apache/hadoop/hbase/master/MasterStateStore.html#line.56">MasterStateStore</a>(<a href="../../../../../org/apache/hadoop/hbase/master/region/MasterRegion.html" title="class in org.apache.hadoop.hbase.master.region">MasterRegion</a> masterRegion, |
| <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> stateName, |
| <a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html" title="class in org.apache.hadoop.hbase.zookeeper">ZKWatcher</a> watcher, |
| <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> zkPath) |
| 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>, |
| org.apache.zookeeper.KeeperException</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> |
| <dd><code>org.apache.zookeeper.KeeperException</code></dd> |
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| <h4>getState</h4> |
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| <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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| <h4>setState</h4> |
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| <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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| <h4>get</h4> |
| <pre>private <a href="../../../../../org/apache/hadoop/hbase/client/Result.html" title="class in org.apache.hadoop.hbase.client">Result</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/master/MasterStateStore.html#line.71">get</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> |
| <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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| <h4>update</h4> |
| <pre>private void <a href="../../../../../src-html/org/apache/hadoop/hbase/master/MasterStateStore.html#line.75">update</a>(byte[] s) |
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| <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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| <h4>migrate</h4> |
| <pre>private byte[] <a href="../../../../../src-html/org/apache/hadoop/hbase/master/MasterStateStore.html#line.79">migrate</a>(<a href="../../../../../org/apache/hadoop/hbase/zookeeper/ZKWatcher.html" title="class in org.apache.hadoop.hbase.zookeeper">ZKWatcher</a> watcher, |
| <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> zkPath) |
| throws org.apache.zookeeper.KeeperException, |
| <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>org.apache.zookeeper.KeeperException</code></dd> |
| <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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