cd7157784e
git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1161332 13f79535-47bb-0310-9956-ffa450edef68
143 lines
4.3 KiB
Bash
143 lines
4.3 KiB
Bash
#! /bin/sh
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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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### BEGIN INIT INFO
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# Provides: hadoop-tasktracker
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# Required-Start: $remote_fs $syslog
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# Required-Stop: $remote_fs $syslog
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# Default-Start: 2 3 4 5
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# Default-Stop:
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# Short-Description: Apache Hadoop Task Tracker server
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### END INIT INFO
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set -e
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# /etc/init.d/hadoop-tasktracker: start and stop the Apache Hadoop Task Tracker daemon
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test -x /usr/bin/hadoop || exit 0
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( /usr/bin/hadoop 2>&1 | grep -q hadoop ) 2>/dev/null || exit 0
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umask 022
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if test -f /etc/default/hadoop-env.sh; then
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. /etc/default/hadoop-env.sh
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fi
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. /lib/lsb/init-functions
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# Are we running from init?
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run_by_init() {
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([ "$previous" ] && [ "$runlevel" ]) || [ "$runlevel" = S ]
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}
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check_for_no_start() {
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# forget it if we're trying to start, and /etc/hadoop/hadoop-tasktracker_not_to_be_run exists
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if [ -e /etc/hadoop/hadoop-tasktracker_not_to_be_run ]; then
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if [ "$1" = log_end_msg ]; then
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log_end_msg 0
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fi
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if ! run_by_init; then
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log_action_msg "Apache Hadoop Task Tracker server not in use (/etc/hadoop/hadoop-tasktracker_not_to_be_run)"
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fi
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exit 0
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fi
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}
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check_privsep_dir() {
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# Create the PrivSep empty dir if necessary
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if [ ! -d ${HADOOP_PID_DIR} ]; then
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mkdir -p ${HADOOP_PID_DIR}
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chown root:hadoop ${HADOOP_PID_DIR}
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chmod 0775 ${HADOOP_PID_DIR}
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fi
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}
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export PATH="${PATH:+$PATH:}/usr/sbin:/usr/bin"
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case "$1" in
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start)
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check_privsep_dir
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check_for_no_start
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log_daemon_msg "Starting Apache Hadoop Task Tracker server" "hadoop-tasktracker"
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if start-stop-daemon --start --quiet --oknodo --pidfile ${HADOOP_PID_DIR}/hadoop-mapred-tasktracker.pid -c mapred -x ${HADOOP_PREFIX}/sbin/hadoop-daemon.sh -- --config ${HADOOP_CONF_DIR} start tasktracker; then
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log_end_msg 0
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else
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log_end_msg 1
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fi
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;;
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stop)
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log_daemon_msg "Stopping Apache Hadoop Task Tracker server" "hadoop-tasktracker"
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if start-stop-daemon --stop --quiet --oknodo --pidfile ${HADOOP_PID_DIR}/hadoop-mapred-tasktracker.pid; then
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log_end_msg 0
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else
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log_end_msg 1
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fi
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;;
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restart)
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check_privsep_dir
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log_daemon_msg "Restarting Apache Hadoop Task Tracker server" "hadoop-tasktracker"
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start-stop-daemon --stop --quiet --oknodo --retry 30 --pidfile ${HADOOP_PID_DIR}/hadoop-mapred-tasktracker.pid
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check_for_no_start log_end_msg
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if start-stop-daemon --start --quiet --oknodo --pidfile ${HADOOP_PID_DIR}/hadoop-mapred-tasktracker.pid -c mapred -x ${HADOOP_PREFIX}/sbin/hadoop-daemon.sh -- --config ${HADOOP_CONF_DIR} start tasktracker; then
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log_end_msg 0
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else
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log_end_msg 1
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fi
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;;
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try-restart)
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check_privsep_dir
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log_daemon_msg "Restarting Apache Hadoop Task Tracker server" "hadoop-tasktracker"
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set +e
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start-stop-daemon --stop --quiet --retry 30 --pidfile ${HADOOP_PID_DIR}/hadoop-mapred-tasktracker.pid
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RET="$?"
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set -e
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case $RET in
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0)
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# old daemon stopped
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check_for_no_start log_end_msg
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if start-stop-daemon --start --quiet --oknodo --pidfile ${HADOOP_PID_DIR}/hadoop-mapred-tasktracker.pid -c mapred -x ${HADOOP_PREFIX}/sbin/hadoop-daemon.sh -- --config ${HADOOP_CONF_DIR} start tasktracker; then
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log_end_msg 0
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else
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log_end_msg 1
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fi
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;;
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1)
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# daemon not running
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log_progress_msg "(not running)"
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log_end_msg 0
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;;
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*)
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# failed to stop
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log_progress_msg "(failed to stop)"
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log_end_msg 1
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;;
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esac
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;;
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status)
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status_of_proc -p ${HADOOP_PID_DIR}/hadoop-mapred-tasktracker.pid ${JAVA_HOME}/bin/java hadoop-tasktracker && exit 0 || exit $?
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;;
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*)
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log_action_msg "Usage: /etc/init.d/hadoop-tasktracker {start|stop|restart|try-restart|status}"
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exit 1
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esac
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exit 0
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