/*

  * 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.giraph.utils;

 import java.io.IOException;

 import org.apache.hadoop.mapreduce.JobContext;

 import org.apache.hadoop.mapreduce.OutputCommitter;

 import org.apache.hadoop.mapreduce.TaskAttemptContext;

 /**

  * Output committer which has abstract commit method

  */

 public abstract class DefaultOutputCommitter extends OutputCommitter {

   /**

    * For cleaning up the job's output after job completion. Note that this

    * is invoked for jobs with final run state as

    * {@link org.apache.hadoop.mapreduce.JobStatus.State#SUCCEEDED}

    *

    * @param jobContext Context of the job whose output is being written.

    */

   public abstract void commit(JobContext jobContext) throws IOException;

   @Override

   public final void setupJob(JobContext jobContext) throws IOException {

   }

   @Override

   public final void setupTask(TaskAttemptContext taskContext)

       throws IOException {

   }

   @Override

   public final void commitJob(JobContext jobContext)

       throws IOException {

     super.commitJob(jobContext);

     commit(jobContext);

   }

   @Override

   public final boolean needsTaskCommit(TaskAttemptContext taskContext)

       throws IOException {

     // Digraph does not require a task commit and there is a bug in Corona

     // which triggers t5688706

     // Avoiding the task commit should work around this.

     return false;

   }

   @Override

   public final void commitTask(TaskAttemptContext context) throws IOException {

   }

   @Override

   public final void abortTask(TaskAttemptContext taskContext)

       throws IOException {

   }

 }