http://git-wip-us.apache.org/repos/asf/hbase-site/blob/7816cbde/devapidocs/org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html ---------------------------------------------------------------------- diff --git a/devapidocs/org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html b/devapidocs/org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html index 2553718..2a380e3 100644 --- a/devapidocs/org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html +++ b/devapidocs/org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html @@ -50,7 +50,7 @@ var activeTableTab = "activeTableTab"; <div class="subNav"> <ul class="navList"> <li><a href="../../../../../../org/apache/hadoop/hbase/coprocessor/example/RowCountEndpoint.html" title="class in org.apache.hadoop.hbase.coprocessor.example"><span class="typeNameLink">Prev Class</span></a></li> -<li><a href="../../../../../../org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.ZKWatcher.html" title="class in org.apache.hadoop.hbase.coprocessor.example"><span class="typeNameLink">Next Class</span></a></li> +<li><a href="../../../../../../org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.ZKDataHolder.html" title="class in org.apache.hadoop.hbase.coprocessor.example"><span class="typeNameLink">Next Class</span></a></li> </ul> <ul class="navList"> <li><a href="../../../../../../index.html?org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html" target="_top">Frames</a></li> @@ -113,24 +113,17 @@ var activeTableTab = "activeTableTab"; </dl> <hr> <br> -<pre>public class <a href="../../../../../../src-html/org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html#line.70">ZooKeeperScanPolicyObserver</a> +<pre>public class <a href="../../../../../../src-html/org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html#line.55">ZooKeeperScanPolicyObserver</a> extends <a href="http://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>. - - This would be useful for an incremental backup tool, which would indicate the last - time of a successful backup via ZK and instruct HBase to not delete data that was - inserted since (based on wall clock time). - - This implements org.apache.zookeeper.Watcher directly instead of using - <a href="../../../../../../org/apache/hadoop/hbase/zookeeper/ZooKeeperWatcher.html" title="class in org.apache.hadoop.hbase.zookeeper"><code>ZooKeeperWatcher</code></a>, - because RegionObservers come and go and currently - listeners registered with ZooKeeperWatcher cannot be removed.</div> +<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> </div> @@ -151,7 +144,7 @@ implements <a href="../../../../../../org/apache/hadoop/hbase/coprocessor/Region </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.ZKWatcher.html" title="class in org.apache.hadoop.hbase.coprocessor.example">ZooKeeperScanPolicyObserver.ZKWatcher</a></span></code> +<td class="colLast"><code><span class="memberNameLink"><a 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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="http://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> +<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>private org.apache.zookeeper.ZooKeeper</code></td> -<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html#zk">zk</a></span></code> </td> -</tr> -<tr class="rowColor"> <td class="colFirst"><code>static <a href="http://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="altColor"> +<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="rowColor"> +<tr class="altColor"> <td class="colFirst"><code>static <a 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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> </tr> </table> <ul class="blockList"> @@ -252,65 +241,51 @@ implements <a href="../../../../../../org/apache/hadoop/hbase/coprocessor/Region <th class="colLast" scope="col">Method and Description</th> </tr> <tr id="i0" class="altColor"> -<td class="colFirst"><code><a href="http://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> +<td class="colFirst"><code>private <a href="http://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>protected <a href="../../../../../../org/apache/hadoop/hbase/regionserver/ScanInfo.html" title="class in org.apache.hadoop.hbase.regionserver">ScanInfo</a></code></td> -<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html#getScanInfo-org.apache.hadoop.hbase.regionserver.Store-org.apache.hadoop.hbase.coprocessor.RegionCoprocessorEnvironment-">getScanInfo</a></span>(<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/coprocessor/RegionCoprocessorEnvironment.html" title="interface in org.apache.hadoop.hbase.coprocessor">RegionCoprocessorEnvironment</a> e)</code> </td> +<td class="colFirst"><code><a href="http://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><a href="../../../../../../org/apache/hadoop/hbase/regionserver/InternalScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">InternalScanner</a></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-java.util.List-org.apache.hadoop.hbase.regionserver.ScanType-long-org.apache.hadoop.hbase.regionserver.InternalScanner-org.apache.hadoop.hbase.regionserver.compactions.CompactionLifeCycleTracker-org.apache.hadoop.hbase.regionserver.compactions.CompactionRequest-long-">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="http://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true"; title="class or interface in java.util">List</a><? extends <a href="../../../../../../org/apache/hadoop/hbase/regionserver/KeyValueScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">KeyValueScanner</a>> scanners, - <a href="../../../../../../org/apache/hadoop/hbase/regionserver/ScanType.html" title="enum in org.apache.hadoop.hbase.regionserver">ScanType</a> scanType, - long earliestPutTs, - <a href="../../../../../../org/apache/hadoop/hbase/regionserver/InternalScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">InternalScanner</a> s, - <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, - long readPoint)</code> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html#preCompact-org.apache.hadoop.hbase.coprocessor.ObserverContext-org.apache.hadoop.hbase.regionserver.Store-org.apache.hadoop.hbase.regionserver.InternalScanner-org.apache.hadoop.hbase.regionserver.ScanType-org.apache.hadoop.hbase.regionserver.compactions.CompactionLifeCycleTracker-org.apache.hadoop.hbase.regionserver.compactions.CompactionRequest-">preCompact</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/InternalScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">InternalScanner</a> scanner, + <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/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 prior to writing the <a href="../../../../../../org/apache/hadoop/hbase/regionserver/StoreFile.html" title="interface in org.apache.hadoop.hbase.regionserver"><code>StoreFile</code></a>s selected for compaction into a new - <code>StoreFile</code> and prior to creating the scanner used to read the input files.</div> + <code>StoreFile</code>.</div> </td> </tr> <tr id="i3" class="rowColor"> <td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/InternalScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">InternalScanner</a></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-java.util.List-org.apache.hadoop.hbase.regionserver.InternalScanner-long-">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="http://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/regionserver/KeyValueScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">KeyValueScanner</a>> scanners, - <a href="../../../../../../org/apache/hadoop/hbase/regionserver/InternalScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">InternalScanner</a> s, - long readPoint)</code> -<div class="block">Called before a memstore is flushed to disk and prior to creating the scanner to read from - the memstore.</div> +<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html#preFlush-org.apache.hadoop.hbase.coprocessor.ObserverContext-org.apache.hadoop.hbase.regionserver.Store-org.apache.hadoop.hbase.regionserver.InternalScanner-">preFlush</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/coprocessor/ObserverContext.html" title="interface in 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href="../../../../../../org/apache/hadoop/hbase/coprocessor/example/ZooKeeperScanPolicyObserver.html#preStoreScannerOpen-org.apache.hadoop.hbase.coprocessor.ObserverContext-org.apache.hadoop.hbase.regionserver.Store-org.apache.hadoop.hbase.client.Scan-java.util.NavigableSet-org.apache.hadoop.hbase.regionserver.KeyValueScanner-long-">preStoreScannerOpen</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/client/Scan.html" title="class in org.apache.hadoop.hbase.client">Scan</a> scan, - <a href="http://docs.oracle.com/javase/8/docs/api/java/util/NavigableSet.html?is-external=true"; title="class or interface in java.util">NavigableSet</a><byte[]> targetCols, - <a href="../../../../../../org/apache/hadoop/hbase/regionserver/KeyValueScanner.html" title="interface in org.apache.hadoop.hbase.regionserver">KeyValueScanner</a> s, - long readPoint)</code> -<div class="block">Called before a store opens a new scanner.</div> -</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> e)</code> +<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"> +<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#stop-org.apache.hadoop.hbase.CoprocessorEnvironment-">stop</a></span>(<a 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