| /** |
| * 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.tez.runtime.library.input; |
| |
| import java.io.IOException; |
| |
| import org.apache.hadoop.classification.InterfaceAudience.Private; |
| import org.apache.hadoop.io.DataInputBuffer; |
| import org.apache.hadoop.util.Progress; |
| import org.apache.tez.dag.api.TezException; |
| import org.apache.tez.runtime.api.InputContext; |
| import org.apache.tez.runtime.library.common.sort.impl.TezRawKeyValueIterator; |
| |
| @Private |
| public class OrderedGroupedInputLegacy extends OrderedGroupedKVInput { |
| |
| private final Progress progress = new Progress(); |
| |
| public OrderedGroupedInputLegacy(InputContext inputContext, int numPhysicalInputs) { |
| super(inputContext, numPhysicalInputs); |
| } |
| |
| @Private |
| public TezRawKeyValueIterator getIterator() throws IOException, InterruptedException, TezException { |
| // wait for input so that iterator is available |
| synchronized(this) { |
| if (getNumPhysicalInputs() == 0) { |
| return new TezRawKeyValueIterator() { |
| @Override |
| public DataInputBuffer getKey() throws IOException { |
| throw new RuntimeException("No data available in Input"); |
| } |
| |
| @Override |
| public DataInputBuffer getValue() throws IOException { |
| throw new RuntimeException("No data available in Input"); |
| } |
| |
| @Override |
| public boolean next() throws IOException { |
| return false; |
| } |
| |
| @Override |
| public boolean hasNext() throws IOException { |
| return false; |
| } |
| |
| @Override |
| public void close() throws IOException { |
| } |
| |
| @Override |
| public Progress getProgress() { |
| progress.complete(); |
| return progress; |
| } |
| |
| @Override |
| public boolean isSameKey() throws IOException { |
| throw new UnsupportedOperationException("isSameKey is not supported"); |
| } |
| }; |
| } |
| } |
| |
| waitForInputReady(); |
| synchronized(this) { |
| return rawIter; |
| } |
| } |
| } |