001/**
002 *
003 * Licensed to the Apache Software Foundation (ASF) under one
004 * or more contributor license agreements.  See the NOTICE file
005 * distributed with this work for additional information
006 * regarding copyright ownership.  The ASF licenses this file
007 * to you under the Apache License, Version 2.0 (the
008 * "License"); you may not use this file except in compliance
009 * with the License.  You may obtain a copy of the License at
010 *
011 *     http://www.apache.org/licenses/LICENSE-2.0
012 *
013 * Unless required by applicable law or agreed to in writing, software
014 * distributed under the License is distributed on an "AS IS" BASIS,
015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016 * See the License for the specific language governing permissions and
017 * limitations under the License.
018 */
019package org.apache.hadoop.hbase.mapreduce;
020
021import org.apache.hadoop.hbase.HBaseInterfaceAudience;
022import org.apache.yetus.audience.InterfaceAudience;
023import org.apache.yetus.audience.InterfaceStability;
024import org.apache.hadoop.hbase.mapreduce.replication.VerifyReplication;
025import org.apache.hadoop.hbase.snapshot.ExportSnapshot;
026import org.apache.hadoop.hbase.tool.LoadIncrementalHFiles;
027import org.apache.hadoop.util.ProgramDriver;
028
029/**
030 * Driver for hbase mapreduce jobs. Select which to run by passing
031 * name of job to this main.
032 */
033@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.TOOLS)
034@InterfaceStability.Stable
035public class Driver {
036  /**
037   * @param args
038   * @throws Throwable
039   */
040  public static void main(String[] args) throws Throwable {
041    ProgramDriver pgd = new ProgramDriver();
042
043    pgd.addClass(RowCounter.NAME, RowCounter.class,
044      "Count rows in HBase table.");
045    pgd.addClass(CellCounter.NAME, CellCounter.class,
046      "Count cells in HBase table.");
047    pgd.addClass(Export.NAME, Export.class, "Write table data to HDFS.");
048    pgd.addClass(Import.NAME, Import.class, "Import data written by Export.");
049    pgd.addClass(ImportTsv.NAME, ImportTsv.class, "Import data in TSV format.");
050    pgd.addClass(LoadIncrementalHFiles.NAME, LoadIncrementalHFiles.class,
051                 "Complete a bulk data load.");
052    pgd.addClass(CopyTable.NAME, CopyTable.class,
053        "Export a table from local cluster to peer cluster.");
054    pgd.addClass(VerifyReplication.NAME, VerifyReplication.class, "Compare" +
055        " data from tables in two different clusters. It" +
056        " doesn't work for incrementColumnValues'd cells since" +
057        " timestamp is changed after appending to WAL.");
058    pgd.addClass(WALPlayer.NAME, WALPlayer.class, "Replay WAL files.");
059    pgd.addClass(ExportSnapshot.NAME, ExportSnapshot.class, "Export" +
060        " the specific snapshot to a given FileSystem.");
061
062    ProgramDriver.class.getMethod("driver", new Class [] {String[].class}).
063      invoke(pgd, new Object[]{args});
064  }
065}