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| <div class="subTitle">org.apache.hadoop.hbase.coprocessor.example</div> |
| <h2 title="Class ZooKeeperScanPolicyObserver" class="title">Class ZooKeeperScanPolicyObserver</h2> |
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| <li>org.apache.hadoop.hbase.coprocessor.example.ZooKeeperScanPolicyObserver</li> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="../../../../../../org/apache/hadoop/hbase/Coprocessor.html" title="interface in org.apache.hadoop.hbase">Coprocessor</a>, <a href="../../../../../../org/apache/hadoop/hbase/coprocessor/RegionCoprocessor.html" title="interface in org.apache.hadoop.hbase.coprocessor">RegionCoprocessor</a>, <a href="../../../../../../org/apache/hadoop/hbase/coprocessor/RegionObserver.html" title="interface in org.apache.hadoop.hbase.coprocessor">RegionObserver</a></dd> |
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| <pre>@InterfaceAudience.Private |
| public class <a href="../../../../../../src-html/org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html#line.55">ZooKeeperScanPolicyObserver</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/coprocessor/RegionCoprocessor.html" title="interface in org.apache.hadoop.hbase.coprocessor">RegionCoprocessor</a>, <a href="../../../../../../org/apache/hadoop/hbase/coprocessor/RegionObserver.html" title="interface in org.apache.hadoop.hbase.coprocessor">RegionObserver</a></pre> |
| <div class="block">This is an example showing how a RegionObserver could configured via ZooKeeper in order to |
| control a Region compaction, flush, and scan policy. This also demonstrated the use of shared |
| <a href="../../../../../../org/apache/hadoop/hbase/coprocessor/RegionObserver.html" title="interface in org.apache.hadoop.hbase.coprocessor"><code>RegionObserver</code></a> state. See |
| <a href="../../../../../../org/apache/hadoop/hbase/coprocessor/RegionCoprocessorEnvironment.html#getSharedData--"><code>RegionCoprocessorEnvironment.getSharedData()</code></a>. |
| <p> |
| This would be useful for an incremental backup tool, which would indicate the last time of a |
| successful backup via ZK and instruct HBase that to safely delete the data which has already been |
| backup.</div> |
| </li> |
| </ul> |
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| <th class="colLast" scope="col">Class and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.ZKDataHolder.html" title="class in org.apache.hadoop.hbase.coprocessor.example">ZooKeeperScanPolicyObserver.ZKDataHolder</a></span></code> |
| <div class="block">Internal watcher that keep "data" up to date asynchronously.</div> |
| </td> |
| </tr> |
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| <li class="blockList"><a name="nested.classes.inherited.from.class.org.apache.hadoop.hbase.Coprocessor"> |
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| <h3>Nested classes/interfaces inherited from interface org.apache.hadoop.hbase.<a href="../../../../../../org/apache/hadoop/hbase/Coprocessor.html" title="interface in org.apache.hadoop.hbase">Coprocessor</a></h3> |
| <code><a href="../../../../../../org/apache/hadoop/hbase/Coprocessor.State.html" title="enum in org.apache.hadoop.hbase">Coprocessor.State</a></code></li> |
| </ul> |
| <ul class="blockList"> |
| <li class="blockList"><a name="nested.classes.inherited.from.class.org.apache.hadoop.hbase.coprocessor.RegionObserver"> |
| <!-- --> |
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| <h3>Nested classes/interfaces inherited from interface org.apache.hadoop.hbase.coprocessor.<a href="../../../../../../org/apache/hadoop/hbase/coprocessor/RegionObserver.html" title="interface in org.apache.hadoop.hbase.coprocessor">RegionObserver</a></h3> |
| <code><a href="../../../../../../org/apache/hadoop/hbase/coprocessor/RegionObserver.MutationType.html" title="enum in org.apache.hadoop.hbase.coprocessor">RegionObserver.MutationType</a></code></li> |
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| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
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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 org.apache.curator.framework.recipes.cache.NodeCache</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html#cache">cache</a></span></code> </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/coprocessor/example/ZooKeeperScanPolicyObserver.html#NODE">NODE</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <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/coprocessor/example/ZooKeeperScanPolicyObserver.html#ZK_ENSEMBLE_KEY">ZK_ENSEMBLE_KEY</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html#ZK_SESSION_TIMEOUT_DEFAULT">ZK_SESSION_TIMEOUT_DEFAULT</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <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/coprocessor/example/ZooKeeperScanPolicyObserver.html#ZK_SESSION_TIMEOUT_KEY">ZK_SESSION_TIMEOUT_KEY</a></span></code> </td> |
| </tr> |
| <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/coprocessor/example/ZooKeeperScanPolicyObserver.html#ZKKEY">ZKKEY</a></span></code> </td> |
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| </a> |
| <h3>Fields inherited from interface org.apache.hadoop.hbase.<a href="../../../../../../org/apache/hadoop/hbase/Coprocessor.html" title="interface in org.apache.hadoop.hbase">Coprocessor</a></h3> |
| <code><a href="../../../../../../org/apache/hadoop/hbase/Coprocessor.html#PRIORITY_HIGHEST">PRIORITY_HIGHEST</a>, <a href="../../../../../../org/apache/hadoop/hbase/Coprocessor.html#PRIORITY_LOWEST">PRIORITY_LOWEST</a>, <a href="../../../../../../org/apache/hadoop/hbase/Coprocessor.html#PRIORITY_SYSTEM">PRIORITY_SYSTEM</a>, <a href="../../../../../../org/apache/hadoop/hbase/Coprocessor.html#PRIORITY_USER">PRIORITY_USER</a>, <a href="../../../../../../org/apache/hadoop/hbase/Coprocessor.html#VERSION">VERSION</a></code></li> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html#ZooKeeperScanPolicyObserver--">ZooKeeperScanPolicyObserver</a></span>()</code> </td> |
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| <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="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
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| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/OptionalLong.html?is-external=true" title="class or interface in java.util">OptionalLong</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html#getExpireBefore--">getExpireBefore</a></span>()</code> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Optional.html?is-external=true" title="class or interface in java.util">Optional</a><<a href="../../../../../../org/apache/hadoop/hbase/coprocessor/RegionObserver.html" title="interface in org.apache.hadoop.hbase.coprocessor">RegionObserver</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html#getRegionObserver--">getRegionObserver</a></span>()</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html#preCompactScannerOpen-org.apache.hadoop.hbase.coprocessor.ObserverContext-org.apache.hadoop.hbase.regionserver.Store-org.apache.hadoop.hbase.regionserver.ScanType-org.apache.hadoop.hbase.regionserver.ScanOptions-org.apache.hadoop.hbase.regionserver.compactions.CompactionLifeCycleTracker-org.apache.hadoop.hbase.regionserver.compactions.CompactionRequest-">preCompactScannerOpen</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/coprocessor/ObserverContext.html" title="interface in org.apache.hadoop.hbase.coprocessor">ObserverContext</a><<a href="../../../../../../org/apache/hadoop/hbase/coprocessor/RegionCoprocessorEnvironment.html" title="interface in org.apache.hadoop.hbase.coprocessor">RegionCoprocessorEnvironment</a>> c, |
| <a href="../../../../../../org/apache/hadoop/hbase/regionserver/Store.html" title="interface in org.apache.hadoop.hbase.regionserver">Store</a> store, |
| <a href="../../../../../../org/apache/hadoop/hbase/regionserver/ScanType.html" title="enum in org.apache.hadoop.hbase.regionserver">ScanType</a> scanType, |
| <a href="../../../../../../org/apache/hadoop/hbase/regionserver/ScanOptions.html" title="interface in org.apache.hadoop.hbase.regionserver">ScanOptions</a> options, |
| <a href="../../../../../../org/apache/hadoop/hbase/regionserver/compactions/CompactionLifeCycleTracker.html" title="interface in org.apache.hadoop.hbase.regionserver.compactions">CompactionLifeCycleTracker</a> tracker, |
| <a href="../../../../../../org/apache/hadoop/hbase/regionserver/compactions/CompactionRequest.html" title="interface in org.apache.hadoop.hbase.regionserver.compactions">CompactionRequest</a> request)</code> |
| <div class="block">Called before we open store scanner for compaction.</div> |
| </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/coprocessor/example/ZooKeeperScanPolicyObserver.html#preFlushScannerOpen-org.apache.hadoop.hbase.coprocessor.ObserverContext-org.apache.hadoop.hbase.regionserver.Store-org.apache.hadoop.hbase.regionserver.ScanOptions-org.apache.hadoop.hbase.regionserver.FlushLifeCycleTracker-">preFlushScannerOpen</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/coprocessor/ObserverContext.html" title="interface in org.apache.hadoop.hbase.coprocessor">ObserverContext</a><<a href="../../../../../../org/apache/hadoop/hbase/coprocessor/RegionCoprocessorEnvironment.html" title="interface in org.apache.hadoop.hbase.coprocessor">RegionCoprocessorEnvironment</a>> c, |
| <a href="../../../../../../org/apache/hadoop/hbase/regionserver/Store.html" title="interface in org.apache.hadoop.hbase.regionserver">Store</a> store, |
| <a href="../../../../../../org/apache/hadoop/hbase/regionserver/ScanOptions.html" title="interface in org.apache.hadoop.hbase.regionserver">ScanOptions</a> options, |
| <a href="../../../../../../org/apache/hadoop/hbase/regionserver/FlushLifeCycleTracker.html" title="interface in org.apache.hadoop.hbase.regionserver">FlushLifeCycleTracker</a> tracker)</code> |
| <div class="block">Called before we open store scanner for flush.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html#resetTTL-org.apache.hadoop.hbase.regionserver.ScanOptions-">resetTTL</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/regionserver/ScanOptions.html" title="interface in org.apache.hadoop.hbase.regionserver">ScanOptions</a> options)</code> </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html#start-org.apache.hadoop.hbase.CoprocessorEnvironment-">start</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/CoprocessorEnvironment.html" title="interface in org.apache.hadoop.hbase">CoprocessorEnvironment</a> env)</code> |
| <div class="block">Called by the <a href="../../../../../../org/apache/hadoop/hbase/CoprocessorEnvironment.html" title="interface in org.apache.hadoop.hbase"><code>CoprocessorEnvironment</code></a> during it's own startup to initialize the |
| coprocessor.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html#stop-org.apache.hadoop.hbase.CoprocessorEnvironment-">stop</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/CoprocessorEnvironment.html" title="interface in org.apache.hadoop.hbase">CoprocessorEnvironment</a> env)</code> |
| <div class="block">Called by the <a href="../../../../../../org/apache/hadoop/hbase/CoprocessorEnvironment.html" title="interface in org.apache.hadoop.hbase"><code>CoprocessorEnvironment</code></a> during it's own shutdown to stop the |
| coprocessor.</div> |
| </td> |
| </tr> |
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| <h3>Methods inherited from class java.lang.<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></h3> |
| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> |
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| <li class="blockList"><a name="methods.inherited.from.class.org.apache.hadoop.hbase.coprocessor.RegionCoprocessor"> |
| <!-- --> |
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| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/coprocessor/RegionCoprocessor.html#getRegionObserver--">getRegionObserver</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/coprocessor/RegionCoprocessor.html" title="interface in org.apache.hadoop.hbase.coprocessor">RegionCoprocessor</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="start-org.apache.hadoop.hbase.CoprocessorEnvironment-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>start</h4> |
| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html#line.139">start</a>(<a href="../../../../../../org/apache/hadoop/hbase/CoprocessorEnvironment.html" title="interface in org.apache.hadoop.hbase">CoprocessorEnvironment</a> env) |
| 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"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/hbase/Coprocessor.html#start-org.apache.hadoop.hbase.CoprocessorEnvironment-">Coprocessor</a></code></span></div> |
| <div class="block">Called by the <a href="../../../../../../org/apache/hadoop/hbase/CoprocessorEnvironment.html" title="interface in org.apache.hadoop.hbase"><code>CoprocessorEnvironment</code></a> during it's own startup to initialize the |
| coprocessor.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/Coprocessor.html#start-org.apache.hadoop.hbase.CoprocessorEnvironment-">start</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/Coprocessor.html" title="interface in org.apache.hadoop.hbase">Coprocessor</a></code></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></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="stop-org.apache.hadoop.hbase.CoprocessorEnvironment-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>stop</h4> |
| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html#line.154">stop</a>(<a href="../../../../../../org/apache/hadoop/hbase/CoprocessorEnvironment.html" title="interface in org.apache.hadoop.hbase">CoprocessorEnvironment</a> env) |
| 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"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/hbase/Coprocessor.html#stop-org.apache.hadoop.hbase.CoprocessorEnvironment-">Coprocessor</a></code></span></div> |
| <div class="block">Called by the <a href="../../../../../../org/apache/hadoop/hbase/CoprocessorEnvironment.html" title="interface in org.apache.hadoop.hbase"><code>CoprocessorEnvironment</code></a> during it's own shutdown to stop the |
| coprocessor.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/Coprocessor.html#stop-org.apache.hadoop.hbase.CoprocessorEnvironment-">stop</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/Coprocessor.html" title="interface in org.apache.hadoop.hbase">Coprocessor</a></code></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></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getExpireBefore--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getExpireBefore</h4> |
| <pre>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/OptionalLong.html?is-external=true" title="class or interface in java.util">OptionalLong</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html#line.160">getExpireBefore</a>()</pre> |
| </li> |
| </ul> |
| <a name="resetTTL-org.apache.hadoop.hbase.regionserver.ScanOptions-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>resetTTL</h4> |
| <pre>private void <a href="../../../../../../src-html/org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html#line.172">resetTTL</a>(<a href="../../../../../../org/apache/hadoop/hbase/regionserver/ScanOptions.html" title="interface in org.apache.hadoop.hbase.regionserver">ScanOptions</a> options)</pre> |
| </li> |
| </ul> |
| <a name="preFlushScannerOpen-org.apache.hadoop.hbase.coprocessor.ObserverContext-org.apache.hadoop.hbase.regionserver.Store-org.apache.hadoop.hbase.regionserver.ScanOptions-org.apache.hadoop.hbase.regionserver.FlushLifeCycleTracker-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>preFlushScannerOpen</h4> |
| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html#line.181">preFlushScannerOpen</a>(<a href="../../../../../../org/apache/hadoop/hbase/coprocessor/ObserverContext.html" title="interface in org.apache.hadoop.hbase.coprocessor">ObserverContext</a><<a href="../../../../../../org/apache/hadoop/hbase/coprocessor/RegionCoprocessorEnvironment.html" title="interface in org.apache.hadoop.hbase.coprocessor">RegionCoprocessorEnvironment</a>> c, |
| <a href="../../../../../../org/apache/hadoop/hbase/regionserver/Store.html" title="interface in org.apache.hadoop.hbase.regionserver">Store</a> store, |
| <a href="../../../../../../org/apache/hadoop/hbase/regionserver/ScanOptions.html" title="interface in org.apache.hadoop.hbase.regionserver">ScanOptions</a> options, |
| <a href="../../../../../../org/apache/hadoop/hbase/regionserver/FlushLifeCycleTracker.html" title="interface in org.apache.hadoop.hbase.regionserver">FlushLifeCycleTracker</a> tracker) |
| 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"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/hbase/coprocessor/RegionObserver.html#preFlushScannerOpen-org.apache.hadoop.hbase.coprocessor.ObserverContext-org.apache.hadoop.hbase.regionserver.Store-org.apache.hadoop.hbase.regionserver.ScanOptions-org.apache.hadoop.hbase.regionserver.FlushLifeCycleTracker-">RegionObserver</a></code></span></div> |
| <div class="block">Called before we open store scanner for flush. You can use the <code>options</code> to change max |
| versions and TTL for the scanner being opened.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/coprocessor/RegionObserver.html#preFlushScannerOpen-org.apache.hadoop.hbase.coprocessor.ObserverContext-org.apache.hadoop.hbase.regionserver.Store-org.apache.hadoop.hbase.regionserver.ScanOptions-org.apache.hadoop.hbase.regionserver.FlushLifeCycleTracker-">preFlushScannerOpen</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/coprocessor/RegionObserver.html" title="interface in org.apache.hadoop.hbase.coprocessor">RegionObserver</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>c</code> - the environment provided by the region server</dd> |
| <dd><code>store</code> - the store where flush is being requested</dd> |
| <dd><code>options</code> - used to change max versions and TTL for the scanner being opened</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></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="preCompactScannerOpen-org.apache.hadoop.hbase.coprocessor.ObserverContext-org.apache.hadoop.hbase.regionserver.Store-org.apache.hadoop.hbase.regionserver.ScanType-org.apache.hadoop.hbase.regionserver.ScanOptions-org.apache.hadoop.hbase.regionserver.compactions.CompactionLifeCycleTracker-org.apache.hadoop.hbase.regionserver.compactions.CompactionRequest-"> |
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| </a> |
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| <li class="blockList"> |
| <h4>preCompactScannerOpen</h4> |
| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html#line.187">preCompactScannerOpen</a>(<a href="../../../../../../org/apache/hadoop/hbase/coprocessor/ObserverContext.html" title="interface in org.apache.hadoop.hbase.coprocessor">ObserverContext</a><<a href="../../../../../../org/apache/hadoop/hbase/coprocessor/RegionCoprocessorEnvironment.html" title="interface in org.apache.hadoop.hbase.coprocessor">RegionCoprocessorEnvironment</a>> c, |
| <a href="../../../../../../org/apache/hadoop/hbase/regionserver/Store.html" title="interface in org.apache.hadoop.hbase.regionserver">Store</a> store, |
| <a href="../../../../../../org/apache/hadoop/hbase/regionserver/ScanType.html" title="enum in org.apache.hadoop.hbase.regionserver">ScanType</a> scanType, |
| <a href="../../../../../../org/apache/hadoop/hbase/regionserver/ScanOptions.html" title="interface in org.apache.hadoop.hbase.regionserver">ScanOptions</a> options, |
| <a href="../../../../../../org/apache/hadoop/hbase/regionserver/compactions/CompactionLifeCycleTracker.html" title="interface in org.apache.hadoop.hbase.regionserver.compactions">CompactionLifeCycleTracker</a> tracker, |
| <a href="../../../../../../org/apache/hadoop/hbase/regionserver/compactions/CompactionRequest.html" title="interface in org.apache.hadoop.hbase.regionserver.compactions">CompactionRequest</a> request) |
| 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"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/hbase/coprocessor/RegionObserver.html#preCompactScannerOpen-org.apache.hadoop.hbase.coprocessor.ObserverContext-org.apache.hadoop.hbase.regionserver.Store-org.apache.hadoop.hbase.regionserver.ScanType-org.apache.hadoop.hbase.regionserver.ScanOptions-org.apache.hadoop.hbase.regionserver.compactions.CompactionLifeCycleTracker-org.apache.hadoop.hbase.regionserver.compactions.CompactionRequest-">RegionObserver</a></code></span></div> |
| <div class="block">Called before we open store scanner for compaction. You can use the <code>options</code> to change max |
| versions and TTL for the scanner being opened.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/coprocessor/RegionObserver.html#preCompactScannerOpen-org.apache.hadoop.hbase.coprocessor.ObserverContext-org.apache.hadoop.hbase.regionserver.Store-org.apache.hadoop.hbase.regionserver.ScanType-org.apache.hadoop.hbase.regionserver.ScanOptions-org.apache.hadoop.hbase.regionserver.compactions.CompactionLifeCycleTracker-org.apache.hadoop.hbase.regionserver.compactions.CompactionRequest-">preCompactScannerOpen</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/coprocessor/RegionObserver.html" title="interface in org.apache.hadoop.hbase.coprocessor">RegionObserver</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>c</code> - the environment provided by the region server</dd> |
| <dd><code>store</code> - the store being compacted</dd> |
| <dd><code>scanType</code> - type of Scan</dd> |
| <dd><code>options</code> - used to change max versions and TTL for the scanner being opened</dd> |
| <dd><code>tracker</code> - tracker used to track the life cycle of a compaction</dd> |
| <dd><code>request</code> - the requested compaction</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></dd> |
| </dl> |
| </li> |
| </ul> |
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