| /** |
| * Copyright 2010 The Apache Software Foundation |
| * |
| * 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.regionserver; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hbase.HConstants; |
| import org.apache.hadoop.hbase.LocalHBaseCluster; |
| import org.apache.hadoop.hbase.util.ServerCommandLine; |
| |
| /** |
| * Class responsible for parsing the command line and starting the |
| * RegionServer. |
| */ |
| public class HRegionServerCommandLine extends ServerCommandLine { |
| private static final Log LOG = LogFactory.getLog(HRegionServerCommandLine.class); |
| |
| private final Class<? extends HRegionServer> regionServerClass; |
| |
| private static final String USAGE = |
| "Usage: HRegionServer [-D conf.param=value] start"; |
| |
| public HRegionServerCommandLine(Class<? extends HRegionServer> clazz) { |
| this.regionServerClass = clazz; |
| } |
| |
| protected String getUsage() { |
| return USAGE; |
| } |
| |
| private int start() throws Exception { |
| Configuration conf = getConf(); |
| |
| // If 'local', don't start a region server here. Defer to |
| // LocalHBaseCluster. It manages 'local' clusters. |
| if (LocalHBaseCluster.isLocal(conf)) { |
| LOG.warn("Not starting a distinct region server because " |
| + HConstants.CLUSTER_DISTRIBUTED + " is false"); |
| } else { |
| logJVMInfo(); |
| HRegionServer hrs = HRegionServer.constructRegionServer(regionServerClass, conf); |
| HRegionServer.startRegionServer(hrs); |
| } |
| return 0; |
| } |
| |
| public int run(String args[]) throws Exception { |
| if (args.length != 1) { |
| usage(null); |
| return -1; |
| } |
| |
| String cmd = args[0]; |
| |
| if ("start".equals(cmd)) { |
| return start(); |
| } else if ("stop".equals(cmd)) { |
| System.err.println( |
| "To shutdown the regionserver run " + |
| "bin/hbase-daemon.sh stop regionserver or send a kill signal to" + |
| "the regionserver pid"); |
| return -1; |
| } else { |
| usage("Unknown command: " + args[0]); |
| return -1; |
| } |
| } |
| } |