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From git-site-r...@apache.org
Subject [02/51] [partial] hbase-site git commit: Published site at .
Date Tue, 26 Dec 2017 15:21:00 GMT
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/b618ac40/devapidocs/src-html/org/apache/hadoop/hbase/replication/TableBasedReplicationQueuesClientImpl.html
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diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/replication/TableBasedReplicationQueuesClientImpl.html b/devapidocs/src-html/org/apache/hadoop/hbase/replication/TableBasedReplicationQueuesClientImpl.html
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-<span class="sourceLineNo">005</span> * distributed with this work for additional information<a name="line.5"></a>
-<span class="sourceLineNo">006</span> * regarding copyright ownership.  The ASF licenses this file<a name="line.6"></a>
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-<span class="sourceLineNo">019</span>package org.apache.hadoop.hbase.replication;<a name="line.19"></a>
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-<span class="sourceLineNo">021</span>import org.apache.commons.lang3.NotImplementedException;<a name="line.21"></a>
-<span class="sourceLineNo">022</span>import org.apache.hadoop.conf.Configuration;<a name="line.22"></a>
-<span class="sourceLineNo">023</span>import org.apache.hadoop.hbase.Abortable;<a name="line.23"></a>
-<span class="sourceLineNo">024</span>import org.apache.hadoop.hbase.HConstants;<a name="line.24"></a>
-<span class="sourceLineNo">025</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.25"></a>
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-<span class="sourceLineNo">027</span>import org.apache.hadoop.hbase.client.ResultScanner;<a name="line.27"></a>
-<span class="sourceLineNo">028</span>import org.apache.hadoop.hbase.client.Scan;<a name="line.28"></a>
-<span class="sourceLineNo">029</span>import org.apache.hadoop.hbase.client.Table;<a name="line.29"></a>
-<span class="sourceLineNo">030</span>import org.apache.zookeeper.KeeperException;<a name="line.30"></a>
-<span class="sourceLineNo">031</span><a name="line.31"></a>
-<span class="sourceLineNo">032</span>import java.io.IOException;<a name="line.32"></a>
-<span class="sourceLineNo">033</span>import java.util.HashSet;<a name="line.33"></a>
-<span class="sourceLineNo">034</span>import java.util.List;<a name="line.34"></a>
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-<span class="sourceLineNo">037</span>/**<a name="line.37"></a>
-<span class="sourceLineNo">038</span> * Implements the ReplicationQueuesClient interface on top of the Replication Table. It utilizes<a name="line.38"></a>
-<span class="sourceLineNo">039</span> * the ReplicationTableBase to access the Replication Table.<a name="line.39"></a>
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http://git-wip-us.apache.org/repos/asf/hbase-site/blob/b618ac40/devapidocs/src-html/org/apache/hadoop/hbase/replication/TableBasedReplicationQueuesImpl.html
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diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/replication/TableBasedReplicationQueuesImpl.html b/devapidocs/src-html/org/apache/hadoop/hbase/replication/TableBasedReplicationQueuesImpl.html
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--- a/devapidocs/src-html/org/apache/hadoop/hbase/replication/TableBasedReplicationQueuesImpl.html
+++ /dev/null
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-<span class="sourceLineNo">004</span>* or more contributor license agreements.  See the NOTICE file<a name="line.4"></a>
-<span class="sourceLineNo">005</span>* distributed with this work for additional information<a name="line.5"></a>
-<span class="sourceLineNo">006</span>* regarding copyright ownership.  The ASF licenses this file<a name="line.6"></a>
-<span class="sourceLineNo">007</span>* to you under the Apache License, Version 2.0 (the<a name="line.7"></a>
-<span class="sourceLineNo">008</span>* "License"); you may not use this file except in compliance<a name="line.8"></a>
-<span class="sourceLineNo">009</span>* with the License.  You may obtain a copy of the License at<a name="line.9"></a>
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-<span class="sourceLineNo">015</span>* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.15"></a>
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-<span class="sourceLineNo">018</span>*/<a name="line.18"></a>
-<span class="sourceLineNo">019</span>package org.apache.hadoop.hbase.replication;<a name="line.19"></a>
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-<span class="sourceLineNo">340</span>    RowMutations mutations = new RowMutations(put.getRow());<a name="line.340"></a>
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-<span class="sourceLineNo">348</span>   * @param delete Row mutation to perform on the queue<a name="line.348"></a>
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-<span class="sourceLineNo">354</span>    safeQueueUpdate(mutations);<a name="line.354"></a>
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-<span class="sourceLineNo">356</span><a name="line.356"></a>
-<span class="sourceLineNo">357</span>  /**<a name="line.357"></a>
-<span class="sourceLineNo">358</span>   * Attempt to mutate a given queue in the Replication Table with a checkAndPut on the OWNER column<a name="line.358"></a>
-<span class="sourceLineNo">359</span>   * of the queue. Abort the server if this checkAndPut fails: which means we have somehow lost<a name="line.359"></a>
-<span class="sourceLineNo">360</span>   * ownership of the column or an IO Exception has occurred during the transaction.<a name="line.360"></a>
-<span class="sourceLineNo">361</span>   *<a name="line.361"></a>
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-<span class="sourceLineNo">364</span>  private void safeQueueUpdate(RowMutations mutate) throws ReplicationException, IOException{<a name="line.364"></a>
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-<span class="sourceLineNo">369</span>        throw new ReplicationException("Failed to update Replication Table because we lost queue " +<a name="line.369"></a>
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-<span class="sourceLineNo">377</span>   *<a name="line.377"></a>
-<span class="sourceLineNo">378</span>   * @param queueId Either raw or reclaimed format of the queueId<a name="line.378"></a>
-<span class="sourceLineNo">379</span>   * @return Whether the queue is stored in HBase<a name="line.379"></a>
-<span class="sourceLineNo">380</span>   * @throws IOException<a name="line.380"></a>
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-<span class="sourceLineNo">382</span>  private boolean checkQueueExists(String queueId) throws IOException {<a name="line.382"></a>
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-<span class="sourceLineNo">384</span>      byte[] rowKey = queueIdToRowKey(queueId);<a name="line.384"></a>
-<span class="sourceLineNo">385</span>      return replicationTable.exists(new Get(rowKey));<a name="line.385"></a>
-<span class="sourceLineNo">386</span>    }<a name="line.386"></a>
-<span class="sourceLineNo">387</span>  }<a name="line.387"></a>
-<span class="sourceLineNo">388</span><a name="line.388"></a>
-<span class="sourceLineNo">389</span>  /**<a name="line.389"></a>
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-<span class="sourceLineNo">391</span>   * recently killed server is still the OWNER before we claim it.<a name="line.391"></a>
-<span class="sourceLineNo">392</span>   *<a name="line.392"></a>
-<span class="sourceLineNo">393</span>   * @param queue The queue that we are trying to claim<a name="line.393"></a>
-<span class="sourceLineNo">394</span>   * @param originalServer The server that originally owned the queue<a name="line.394"></a>
-<span class="sourceLineNo">395</span>   * @return Whether we successfully claimed the queue<a name="line.395"></a>
-<span class="sourceLineNo">396</span>   * @throws IOException<a name="line.396"></a>
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-<span class="sourceLineNo">399</span>    Put putQueueNameAndHistory = new Put(queue.getRow());<a name="line.399"></a>
-<span class="sourceLineNo">400</span>    putQueueNameAndHistory.addColumn(CF_QUEUE, COL_QUEUE_OWNER, Bytes.toBytes(serverName));<a name="line.400"></a>
-<span class="sourceLineNo">401</span>    String newOwnerHistory = buildClaimedQueueHistory(Bytes.toString(queue.getValue(CF_QUEUE,<a name="line.401"></a>
-<span class="sourceLineNo">402</span>      COL_QUEUE_OWNER_HISTORY)), originalServer);<a name="line.402"></a>
-<span class="sourceLineNo">403</span>    putQueueNameAndHistory.addColumn(CF_QUEUE, COL_QUEUE_OWNER_HISTORY,<a name="line.403"></a>
-<span class="sourceLineNo">404</span>        Bytes.toBytes(newOwnerHistory));<a name="line.404"></a>
-<span class="sourceLineNo">405</span>    RowMutations claimAndRenameQueue = new RowMutations(queue.getRow());<a name="line.405"></a>
-<span class="sourceLineNo">406</span>    claimAndRenameQueue.add(putQueueNameAndHistory);<a name="line.406"></a>
-<span class="sourceLineNo">407</span>    // Attempt to claim ownership for this queue by checking if the current OWNER is the original<a name="line.407"></a>
-<span class="sourceLineNo">408</span>    // server. If it is not then another RS has already claimed it. If it is we set ourselves as the<a name="line.408"></a>
-<span class="sourceLineNo">409</span>    // new owner and update the queue's history<a name="line.409"></a>
-<span class="sourceLineNo">410</span>    try (Table replicationTable = getOrBlockOnReplicationTable()) {<a name="line.410"></a>
-<span class="sourceLineNo">411</span>      boolean success = replicationTable.checkAndMutate(queue.getRow(), CF_QUEUE)<a name="line.411"></a>
-<span class="sourceLineNo">412</span>          .qualifier(COL_QUEUE_OWNER).ifEquals(Bytes.toBytes(originalServer))<a name="line.412"></a>
-<span class="sourceLineNo">413</span>          .thenMutate(claimAndRenameQueue);<a name="line.413"></a>
-<span class="sourceLineNo">414</span>      return success;<a name="line.414"></a>
-<span class="sourceLineNo">415</span>    }<a name="line.415"></a>
-<span class="sourceLineNo">416</span>  }<a name="line.416"></a>
-<span class="sourceLineNo">417</span><a name="line.417"></a>
-<span class="sourceLineNo">418</span>  /**<a name="line.418"></a>
-<span class="sourceLineNo">419</span>   * Attempts to run a Get on some queue. Will only return a non-null result if we currently own<a name="line.419"></a>
-<span class="sourceLineNo">420</span>   * the queue.<a name="line.420"></a>
-<span class="sourceLineNo">421</span>   *<a name="line.421"></a>
-<span class="sourceLineNo">422</span>   * @param get The Get that we want to query<a name="line.422"></a>
-<span class="sourceLineNo">423</span>   * @return The result of the Get if this server is the owner of the queue. Else it returns null.<a name="line.423"></a>
-<span class="sourceLineNo">424</span>   * @throws IOException<a name="line.424"></a>
-<span class="sourceLineNo">425</span>   */<a name="line.425"></a>
-<span class="sourceLineNo">426</span>  private Result getResultIfOwner(Get get) throws IOException {<a name="line.426"></a>
-<span class="sourceLineNo">427</span>    Scan scan = new Scan(get);<a name="line.427"></a>
-<span class="sourceLineNo">428</span>    // Check if the Get currently contains all columns or only specific columns<a name="line.428"></a>
-<span class="sourceLineNo">429</span>    if (scan.getFamilyMap().size() &gt; 0) {<a name="line.429"></a>
-<span class="sourceLineNo">430</span>      // Add the OWNER column if the scan is already only over specific columns<a name="line.430"></a>
-<span class="sourceLineNo">431</span>      scan.addColumn(CF_QUEUE, COL_QUEUE_OWNER);<a name="line.431"></a>
-<span class="sourceLineNo">432</span>    }<a name="line.432"></a>
-<span class="sourceLineNo">433</span>    scan.setMaxResultSize(1);<a name="line.433"></a>
-<span class="sourceLineNo">434</span>    SingleColumnValueFilter checkOwner = new SingleColumnValueFilter(CF_QUEUE, COL_QUEUE_OWNER,<a name="line.434"></a>
-<span class="sourceLineNo">435</span>    CompareOperator.EQUAL, serverNameBytes);<a name="line.435"></a>
-<span class="sourceLineNo">436</span>    scan.setFilter(checkOwner);<a name="line.436"></a>
-<span class="sourceLineNo">437</span>    ResultScanner scanner = null;<a name="line.437"></a>
-<span class="sourceLineNo">438</span>    try (Table replicationTable = getOrBlockOnReplicationTable()) {<a name="line.438"></a>
-<span class="sourceLineNo">439</span>      scanner = replicationTable.getScanner(scan);<a name="line.439"></a>
-<span class="sourceLineNo">440</span>      Result result = scanner.next();<a name="line.440"></a>
-<span class="sourceLineNo">441</span>      return (result == null || result.isEmpty()) ? null : result;<a name="line.441"></a>
-<span class="sourceLineNo">442</span>    } finally {<a name="line.442"></a>
-<span class="sourceLineNo">443</span>      if (scanner != null) {<a name="line.443"></a>
-<span class="sourceLineNo">444</span>        scanner.close();<a name="line.444"></a>
-<span class="sourceLineNo">445</span>      }<a name="line.445"></a>
-<span class="sourceLineNo">446</span>    }<a name="line.446"></a>
-<span class="sourceLineNo">447</span>  }<a name="line.447"></a>
-<span class="sourceLineNo">448</span>}<a name="line.448"></a>
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