/**
* 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.drill.exec.work.batch;
import java.io.IOException;
import java.util.concurrent.LinkedBlockingDeque;
import org.apache.drill.exec.ops.FragmentContext;
import org.apache.drill.exec.record.RawFragmentBatch;
import com.google.common.collect.Queues;
public class UnlimitedRawBatchBuffer extends BaseRawBatchBuffer<RawFragmentBatch> {
private static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(UnlimitedRawBatchBuffer.class);
private final int softlimit;
private final int startlimit;
public UnlimitedRawBatchBuffer(FragmentContext context, int fragmentCount, int oppositeId) {
super(context, fragmentCount);
this.softlimit = bufferSizePerSocket * fragmentCount;
this.startlimit = Math.max(softlimit/2, 1);
logger.trace("softLimit: {}, startLimit: {}", softlimit, startlimit);
this.bufferQueue = new UnlimitedBufferQueue();
}
private class UnlimitedBufferQueue implements BufferQueue<RawFragmentBatch> {
private final LinkedBlockingDeque<RawFragmentBatch> buffer = Queues.newLinkedBlockingDeque();;
@Override
public void addOomBatch(RawFragmentBatch batch) {
buffer.addFirst(batch);
}
@Override
public RawFragmentBatch poll() throws IOException {
RawFragmentBatch batch = buffer.poll();
if (batch != null) {
batch.sendOk();
}
return batch;
}
@Override
public RawFragmentBatch take() throws IOException, InterruptedException {
RawFragmentBatch batch = buffer.take();
batch.sendOk();
return batch;
}
@Override
public boolean checkForOutOfMemory() {
return context.isOverMemoryLimit();
}
@Override
public int size() {
return buffer.size();
}
@Override
public boolean isEmpty() {
return buffer.size() == 0;
}
@Override
public void add(RawFragmentBatch batch) {
buffer.add(batch);
}
}
protected void enqueueInner(final RawFragmentBatch batch) throws IOException {
if (bufferQueue.size() < softlimit) {
batch.sendOk();
}
bufferQueue.add(batch);
}
protected void upkeep(RawFragmentBatch batch) {
}
}