com.hazelcast.mapreduce.impl.task.MemberAssigningJobProcessInformationImpl Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2013, Hazelcast, Inc. All Rights Reserved.
*
* Licensed 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 com.hazelcast.mapreduce.impl.task;
import com.hazelcast.mapreduce.JobPartitionState;
import com.hazelcast.nio.Address;
import static com.hazelcast.mapreduce.JobPartitionState.State.WAITING;
import static com.hazelcast.mapreduce.impl.MapReduceUtil.stateChange;
/**
* This {@link com.hazelcast.mapreduce.impl.task.JobProcessInformationImpl} extending class is
* used in non partitionId based map reduce tasks where partitions are kind of simulated using
* a unique id per member.
*/
public class MemberAssigningJobProcessInformationImpl
extends JobProcessInformationImpl {
public MemberAssigningJobProcessInformationImpl(int partitionCount, JobSupervisor supervisor) {
super(partitionCount, supervisor);
}
public int assignMemberId(Address address, String memberUuid, JobTaskConfiguration configuration) {
JobPartitionState[] partitionStates = getPartitionStates();
for (int i = 0; i < partitionStates.length; i++) {
JobPartitionState partitionState = partitionStates[i];
if (partitionState == null || partitionState.getState() == JobPartitionState.State.WAITING) {
// Seems unassigned so let try to use it
if (stateChange(address, i, WAITING, this, configuration) != null) {
return i;
}
}
}
return -1;
}
}