MAPREDUCE-279. MapReduce 2.0. Merging MR-279 branch into trunk. Contributed by Arun C Murthy, Christopher Douglas, Devaraj Das, Greg Roelofs, Jeffrey Naisbitt, Josh Wills, Jonathan Eagles, Krishna Ramachandran, Luke Lu, Mahadev Konar, Robert Evans, Sharad Agarwal, Siddharth Seth, Thomas Graves, and Vinod Kumar Vavilapalli.
git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1159166 13f79535-47bb-0310-9956-ffa450edef68
2011-08-18 07:07:10 -04:00
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#!/usr/bin/env bash
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership.
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# The ASF licenses this file to You under the Apache License, Version 2.0
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# (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# Run a shell command on all slave hosts.
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#
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# Environment Variables
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#
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# YARN_SLAVES File naming remote hosts.
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# Default is ${YARN_CONF_DIR}/slaves.
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# YARN_CONF_DIR Alternate conf dir. Default is ${YARN_HOME}/conf.
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# YARN_SLAVE_SLEEP Seconds to sleep between spawning remote commands.
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# YARN_SSH_OPTS Options passed to ssh when running remote commands.
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##
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usage="Usage: slaves.sh [--config confdir] command..."
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# if no args specified, show usage
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if [ $# -le 0 ]; then
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echo $usage
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exit 1
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fi
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bin=`dirname "${BASH_SOURCE-$0}"`
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bin=`cd "$bin"; pwd`
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2011-11-17 19:57:08 -05:00
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DEFAULT_LIBEXEC_DIR="$bin"
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HADOOP_LIBEXEC_DIR=${HADOOP_LIBEXEC_DIR:-$DEFAULT_LIBEXEC_DIR}
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. $HADOOP_LIBEXEC_DIR/yarn-config.sh
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MAPREDUCE-279. MapReduce 2.0. Merging MR-279 branch into trunk. Contributed by Arun C Murthy, Christopher Douglas, Devaraj Das, Greg Roelofs, Jeffrey Naisbitt, Josh Wills, Jonathan Eagles, Krishna Ramachandran, Luke Lu, Mahadev Konar, Robert Evans, Sharad Agarwal, Siddharth Seth, Thomas Graves, and Vinod Kumar Vavilapalli.
git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1159166 13f79535-47bb-0310-9956-ffa450edef68
2011-08-18 07:07:10 -04:00
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# If the slaves file is specified in the command line,
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# then it takes precedence over the definition in
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# yarn-env.sh. Save it here.
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HOSTLIST=$YARN_SLAVES
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if [ -f "${YARN_CONF_DIR}/yarn-env.sh" ]; then
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. "${YARN_CONF_DIR}/yarn-env.sh"
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fi
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if [ "$HOSTLIST" = "" ]; then
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if [ "$YARN_SLAVES" = "" ]; then
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export HOSTLIST="${YARN_CONF_DIR}/slaves"
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else
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export HOSTLIST="${YARN_SLAVES}"
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fi
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fi
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for slave in `cat "$HOSTLIST"|sed "s/#.*$//;/^$/d"`; do
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ssh $YARN_SSH_OPTS $slave $"${@// /\\ }" \
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2>&1 | sed "s/^/$slave: /" &
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if [ "$YARN_SLAVE_SLEEP" != "" ]; then
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sleep $YARN_SLAVE_SLEEP
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fi
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done
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wait
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