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HBASE-4015 Refactor the TimeoutMonitor to make it less racy 

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1166803 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Michael Stack 2011-09-08 17:03:46 +00:00
parent 0f25ac8ad8
commit 5b9beaf99e
1 changed files with 124 additions and 0 deletions
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src/main/java/org/apache/hadoop/hbase/master/TimeOutManagerCallable.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;
import java.util.concurrent.Callable;
import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.master.AssignmentManager.TimeOutOperationType;
/**
* A callable object that invokes the corresponding action that needs to be
* taken when timeout thread deducts a region was in tranisition for a long
* time. Implementing as future callable we are able to act on the timeout
* asynchronoulsy
*
*/
public class TimeOutManagerCallable implements Callable<Object> {
private AssignmentManager assignmentManager;
private HRegionInfo hri;
private TimeOutOperationType operation;
public TimeOutManagerCallable(AssignmentManager assignmentManager,
HRegionInfo hri, TimeOutOperationType operation) {
this.assignmentManager = assignmentManager;
this.hri = hri;
this.operation = operation;
}
@Override
public Object call() throws Exception {
if (TimeOutOperationType.ASSIGN.equals(operation)) {
assignmentManager.assign(hri, true, true, true);
} else {
assignmentManager.unassign(hri);
}
return null;
}
}
/**
* 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;
import java.util.concurrent.Callable;
import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.master.AssignmentManager.TimeOutOperationType;
/**
* A callable object that invokes the corresponding action that needs to be
* taken when timeout thread deducts a region was in tranisition for a long
* time. Implementing as future callable we are able to act on the timeout
* asynchronoulsy
*
*/
public class TimeOutManagerCallable implements Callable<Object> {
private AssignmentManager assignmentManager;
private HRegionInfo hri;
private TimeOutOperationType operation;
public TimeOutManagerCallable(AssignmentManager assignmentManager,
HRegionInfo hri, TimeOutOperationType operation) {
this.assignmentManager = assignmentManager;
this.hri = hri;
this.operation = operation;
}
@Override
public Object call() throws Exception {
if (TimeOutOperationType.ASSIGN.equals(operation)) {
assignmentManager.assign(hri, true, true, true);
} else {
assignmentManager.unassign(hri);
}
return null;
}
}