| /* |
| * Copyright 2009-2010 by The Regents of the University of California |
| * 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 from |
| * |
| * 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 edu.uci.ics.hyracks.control.nc.partitions; |
| |
| import java.nio.ByteBuffer; |
| |
| import edu.uci.ics.hyracks.api.comm.IFrameWriter; |
| import edu.uci.ics.hyracks.api.dataflow.TaskAttemptId; |
| import edu.uci.ics.hyracks.api.exceptions.HyracksDataException; |
| import edu.uci.ics.hyracks.api.partitions.IPartition; |
| import edu.uci.ics.hyracks.api.partitions.PartitionId; |
| import edu.uci.ics.hyracks.control.common.job.PartitionState; |
| |
| public class PipelinedPartition implements IFrameWriter, IPartition { |
| private final PartitionManager manager; |
| |
| private final PartitionId pid; |
| |
| private final TaskAttemptId taId; |
| |
| private IFrameWriter delegate; |
| |
| private boolean failed; |
| |
| public PipelinedPartition(PartitionManager manager, PartitionId pid, TaskAttemptId taId) { |
| this.manager = manager; |
| this.pid = pid; |
| this.taId = taId; |
| } |
| |
| @Override |
| public boolean isReusable() { |
| return false; |
| } |
| |
| @Override |
| public void deallocate() { |
| // do nothing |
| } |
| |
| @Override |
| public synchronized void writeTo(IFrameWriter writer) { |
| delegate = writer; |
| notifyAll(); |
| } |
| |
| @Override |
| public synchronized void open() throws HyracksDataException { |
| manager.registerPartition(pid, taId, this, PartitionState.STARTED); |
| failed = false; |
| while (delegate == null) { |
| try { |
| wait(); |
| } catch (InterruptedException e) { |
| throw new HyracksDataException(e); |
| } |
| } |
| delegate.open(); |
| } |
| |
| @Override |
| public void nextFrame(ByteBuffer buffer) throws HyracksDataException { |
| delegate.nextFrame(buffer); |
| } |
| |
| @Override |
| public void fail() throws HyracksDataException { |
| failed = true; |
| delegate.fail(); |
| } |
| |
| @Override |
| public void close() throws HyracksDataException { |
| if (!failed) { |
| manager.updatePartitionState(pid, taId, this, PartitionState.COMMITTED); |
| } |
| delegate.close(); |
| } |
| } |