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Diffstat (limited to 'lib/hadoop-0.20.0/bin/hadoop-daemon.sh')
| -rwxr-xr-x | lib/hadoop-0.20.0/bin/hadoop-daemon.sh | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/lib/hadoop-0.20.0/bin/hadoop-daemon.sh b/lib/hadoop-0.20.0/bin/hadoop-daemon.sh new file mode 100755 index 0000000000..e10390a9e2 --- /dev/null +++ b/lib/hadoop-0.20.0/bin/hadoop-daemon.sh @@ -0,0 +1,143 @@ +#!/usr/bin/env bash + +# 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. + + +# Runs a Hadoop command as a daemon. +# +# Environment Variables +# +# HADOOP_CONF_DIR Alternate conf dir. Default is ${HADOOP_HOME}/conf. +# HADOOP_LOG_DIR Where log files are stored. PWD by default. +# HADOOP_MASTER host:path where hadoop code should be rsync'd from +# HADOOP_PID_DIR The pid files are stored. /tmp by default. +# HADOOP_IDENT_STRING A string representing this instance of hadoop. $USER by default +# HADOOP_NICENESS The scheduling priority for daemons. Defaults to 0. +## + +usage="Usage: hadoop-daemon.sh [--config <conf-dir>] [--hosts hostlistfile] (start|stop) <hadoop-command> <args...>" + +# if no args specified, show usage +if [ $# -le 1 ]; then + echo $usage + exit 1 +fi + +bin=`dirname "$0"` +bin=`cd "$bin"; pwd` + +. "$bin"/hadoop-config.sh + +# get arguments +startStop=$1 +shift +command=$1 +shift + +hadoop_rotate_log () +{ + log=$1; + num=5; + if [ -n "$2" ]; then + num=$2 + fi + if [ -f "$log" ]; then # rotate logs + while [ $num -gt 1 ]; do + prev=`expr $num - 1` + [ -f "$log.$prev" ] && mv "$log.$prev" "$log.$num" + num=$prev + done + mv "$log" "$log.$num"; + fi +} + +if [ -f "${HADOOP_CONF_DIR}/hadoop-env.sh" ]; then + . "${HADOOP_CONF_DIR}/hadoop-env.sh" +fi + +# get log directory +if [ "$HADOOP_LOG_DIR" = "" ]; then + export HADOOP_LOG_DIR="$HADOOP_HOME/logs" +fi +mkdir -p "$HADOOP_LOG_DIR" + +if [ "$HADOOP_PID_DIR" = "" ]; then + HADOOP_PID_DIR=/tmp +fi + +if [ "$HADOOP_IDENT_STRING" = "" ]; then + export HADOOP_IDENT_STRING="$USER" +fi + +# some variables +export HADOOP_LOGFILE=hadoop-$HADOOP_IDENT_STRING-$command-$HOSTNAME.log +export HADOOP_ROOT_LOGGER="INFO,DRFA" +log=$HADOOP_LOG_DIR/hadoop-$HADOOP_IDENT_STRING-$command-$HOSTNAME.out +pid=$HADOOP_PID_DIR/hadoop-$HADOOP_IDENT_STRING-$command.pid + +# Set default scheduling priority +if [ "$HADOOP_NICENESS" = "" ]; then + export HADOOP_NICENESS=0 +fi + +case $startStop in + + (start) + + mkdir -p "$HADOOP_PID_DIR" + + if [ -f $pid ]; then + if kill -0 `cat $pid` > /dev/null 2>&1; then + echo $command running as process `cat $pid`. Stop it first. + exit 1 + fi + fi + + if [ "$HADOOP_MASTER" != "" ]; then + echo rsync from $HADOOP_MASTER + rsync -a -e ssh --delete --exclude=.svn --exclude='logs/*' --exclude='contrib/hod/logs/*' $HADOOP_MASTER/ "$HADOOP_HOME" + fi + + hadoop_rotate_log $log + echo starting $command, logging to $log + cd "$HADOOP_HOME" + nohup nice -n $HADOOP_NICENESS "$HADOOP_HOME"/bin/hadoop --config $HADOOP_CONF_DIR $command "$@" > "$log" 2>&1 < /dev/null & + echo $! > $pid + sleep 1; head "$log" + ;; + + (stop) + + if [ -f $pid ]; then + if kill -0 `cat $pid` > /dev/null 2>&1; then + echo stopping $command + kill `cat $pid` + else + echo no $command to stop + fi + else + echo no $command to stop + fi + ;; + + (*) + echo $usage + exit 1 + ;; + +esac + + |