org.apache.hadoop.hbase.mapred.Driver Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of hbase-mapreduce Show documentation

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

There is a newer version: 3.0.0-beta-1

Show newest version

/*
 * 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 });
  }
}