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This module contains implementations of InputFormat, OutputFormat, Mapper, Reducer, etc which are needed for running MR jobs on tables, WALs, HFiles and other HBase specific constructs. It also contains a bunch of tools: RowCounter, ImportTsv, Import, Export, CompactionTool, ExportSnapshot, WALPlayer, etc

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/*
 * 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.hadoop.hbase.mapred;

import org.apache.hadoop.hbase.HBaseInterfaceAudience;
import org.apache.hadoop.util.ProgramDriver;
import org.apache.yetus.audience.InterfaceAudience;
import org.apache.yetus.audience.InterfaceStability;

/**
 * Driver for hbase mapreduce jobs. Select which to run by passing name of job to this main.
 */
@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.TOOLS)
@InterfaceStability.Stable
public class Driver {

  private static ProgramDriver pgd = new ProgramDriver();

  @InterfaceAudience.Private
  static void setProgramDriver(ProgramDriver pgd0) {
    pgd = pgd0;
  }

  public static void main(String[] args) throws Throwable {
    pgd.addClass(RowCounter.NAME, RowCounter.class, "Count rows in HBase table");
    ProgramDriver.class.getMethod("driver", new Class[] { String[].class }).invoke(pgd,
      new Object[] { args });
  }
}