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HBASE-3559 Move report of split to master OFF the heartbeat channel -- forgot to add file 

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1075644 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Michael Stack 2011-03-01 04:04:12 +00:00
parent 5e25568812
commit b4ec6f07ed
1 changed files with 89 additions and 0 deletions
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src/main/java/org/apache/hadoop/hbase/master/handler/SplitRegionHandler.java Normal file
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/**
* Copyright 2011 The Apache Software Foundation
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.master.handler;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.HServerInfo;
import org.apache.hadoop.hbase.Server;
import org.apache.hadoop.hbase.executor.EventHandler;
import org.apache.hadoop.hbase.master.AssignmentManager;
import org.apache.hadoop.hbase.zookeeper.ZKAssign;
import org.apache.zookeeper.KeeperException;
/**
* Handles SPLIT region event on Master.
*/
public class SplitRegionHandler extends EventHandler implements TotesHRegionInfo {
private static final Log LOG = LogFactory.getLog(SplitRegionHandler.class);
private final AssignmentManager assignmentManager;
private final HRegionInfo parent;
private final HServerInfo serverInfo;
private final List<HRegionInfo> daughters;
/**
* For testing only! Set to true to skip handling of split.
*/
public static boolean TEST_SKIP = false;
public SplitRegionHandler(Server server,
AssignmentManager assignmentManager, HRegionInfo regionInfo,
HServerInfo serverInfo, final List<HRegionInfo> daughters) {
super(server, EventType.RS_ZK_REGION_SPLIT);
this.assignmentManager = assignmentManager;
this.parent = regionInfo;
this.serverInfo = serverInfo;
this.daughters = daughters;
}
@Override
public HRegionInfo getHRegionInfo() {
return this.parent;
}
@Override
public void process() {
LOG.debug("Handling SPLIT event for " + this.parent.getEncodedName() +
"; deleting node");
// The below is for testing ONLY! We can't do fault injection easily, so
// resort to this kinda uglyness -- St.Ack 02/25/2011.
if (TEST_SKIP) {
LOG.warn("Skipping split message, TEST_SKIP is set");
return;
}
this.assignmentManager.handleSplitReport(this.serverInfo, this.parent,
this.daughters.get(0), this.daughters.get(1));
// Remove region from ZK
try {
ZKAssign.deleteNode(this.server.getZooKeeper(),
this.parent.getEncodedName(),
EventHandler.EventType.RS_ZK_REGION_SPLIT);
} catch (KeeperException e) {
server.abort("Error deleting SPLIT node in ZK for transition ZK node (" +
parent.getEncodedName() + ")", e);
}
LOG.info("Handled SPLIT report); parent=" +
this.parent.getRegionNameAsString() +
" daughter a=" + this.daughters.get(0).getRegionNameAsString() +
"daughter b=" + this.daughters.get(1).getRegionNameAsString());
}
}