| /** |
| * 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.pig.backend.hadoop.executionengine.tez.runtime; |
| |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.pig.backend.executionengine.ExecException; |
| import org.apache.tez.runtime.api.LogicalInput; |
| |
| /** |
| * This interface is implemented by PhysicalOperators that can have Tez inputs |
| * attached directly to the operator. |
| */ |
| |
| public interface TezInput { |
| |
| public String[] getTezInputs(); |
| |
| public void replaceInput(String oldInputKey, String newInputKey); |
| |
| /** |
| * Add to the list of inputs to skip download if already available in vertex cache |
| * |
| * @param inputsToSkip |
| */ |
| public void addInputsToSkip(Set<String> inputsToSkip); |
| |
| /** |
| * Attach the inputs to the operator. Also ensure reader.next() is called to force fetch |
| * the input so that all inputs are fetched and memory released before memory is allocated |
| * for outputs |
| * |
| * @param inputs available inputs |
| * @param conf configuration |
| * @throws ExecException |
| */ |
| public void attachInputs(Map<String, LogicalInput> inputs, |
| Configuration conf) throws ExecException; |
| |
| } |