| /* |
| * 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 org.apache.drill.exec.memory.BufferAllocator; |
| import org.apache.drill.exec.record.RawFragmentBatch; |
| |
| public interface DataCollector extends AutoCloseable { |
| static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(DataCollector.class); |
| public boolean batchArrived(int minorFragmentId, RawFragmentBatch batch) throws IOException; |
| public int getOppositeMajorFragmentId(); |
| public RawBatchBuffer[] getBuffers(); |
| public int getTotalIncomingFragments(); |
| public void close() throws Exception; |
| /** |
| * Enables caller (e.g., receiver) to attach its buffer allocator to this Data Collector in order |
| * to claim ownership of incoming batches; by default, the fragment allocator owns these batches. |
| * |
| * @param allocator operator buffer allocator |
| */ |
| void setAllocator(BufferAllocator allocator); |
| /** |
| * @return allocator |
| */ |
| BufferAllocator getAllocator(); |
| } |