hbase/bin/hbase-daemon.sh

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#!/usr/bin/env bash
#
#/**
# * Copyright 2007 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.
# */
#
# Runs a Hadoop hbase command as a daemon.
#
# Environment Variables
#
# HBASE_CONF_DIR Alternate hbase conf dir. Default is ${HBASE_HOME}/conf.
# HBASE_LOG_DIR Where log files are stored. PWD by default.
# HBASE_PID_DIR The pid files are stored. /tmp by default.
# HBASE_IDENT_STRING A string representing this instance of hadoop. $USER by default
# HBASE_NICENESS The scheduling priority for daemons. Defaults to 0.
#
# Modelled after $HADOOP_HOME/bin/hadoop-daemon.sh
usage="Usage: hbase-daemon.sh [--config <conf-dir>]\
(start|stop|restart) <hbase-command> \
<args...>"
# if no args specified, show usage
if [ $# -le 1 ]; then
echo $usage
exit 1
fi
bin=`dirname "${BASH_SOURCE-$0}"`
bin=`cd "$bin">/dev/null; pwd`
. "$bin"/hbase-config.sh
# get arguments
startStop=$1
shift
command=$1
shift
hbase_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.$prev" ] && mv -f "$log.$prev" "$log.$num"
num=$prev
done
mv -f "$log" "$log.$num";
fi
}
wait_until_done ()
{
p=$1
cnt=${HBASE_SLAVE_TIMEOUT:-300}
origcnt=$cnt
while kill -0 $p > /dev/null 2>&1; do
if [ $cnt -gt 1 ]; then
cnt=`expr $cnt - 1`
sleep 1
else
echo "Process did not complete after $origcnt seconds, killing."
kill -9 $p
exit 1
fi
done
return 0
}
# get log directory
if [ "$HBASE_LOG_DIR" = "" ]; then
export HBASE_LOG_DIR="$HBASE_HOME/logs"
fi
mkdir -p "$HBASE_LOG_DIR"
if [ "$HBASE_PID_DIR" = "" ]; then
HBASE_PID_DIR=/tmp
fi
if [ "$HBASE_IDENT_STRING" = "" ]; then
export HBASE_IDENT_STRING="$USER"
fi
# Some variables
# Work out java location so can print version into log.
if [ "$JAVA_HOME" != "" ]; then
#echo "run java in $JAVA_HOME"
JAVA_HOME=$JAVA_HOME
fi
if [ "$JAVA_HOME" = "" ]; then
echo "Error: JAVA_HOME is not set."
exit 1
fi
JAVA=$JAVA_HOME/bin/java
export HBASE_LOGFILE=hbase-$HBASE_IDENT_STRING-$command-$HOSTNAME.log
export HBASE_ROOT_LOGGER="INFO,DRFA"
logout=$HBASE_LOG_DIR/hbase-$HBASE_IDENT_STRING-$command-$HOSTNAME.out
loglog="${HBASE_LOG_DIR}/${HBASE_LOGFILE}"
pid=$HBASE_PID_DIR/hbase-$HBASE_IDENT_STRING-$command.pid
# Set default scheduling priority
if [ "$HBASE_NICENESS" = "" ]; then
export HBASE_NICENESS=0
fi
case $startStop in
(start)
mkdir -p "$HBASE_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
hbase_rotate_log $logout
echo starting $command, logging to $logout
# Add to the command log file vital stats on our environment.
echo "`date` Starting $command on `hostname`" >> $loglog
echo "`ulimit -a`" >> $loglog 2>&1
nohup nice -n $HBASE_NICENESS "$HBASE_HOME"/bin/hbase \
--config "${HBASE_CONF_DIR}" \
$command "$@" $startStop > "$logout" 2>&1 < /dev/null &
echo $! > $pid
sleep 1; head "$logout"
;;
(stop)
if [ -f $pid ]; then
# kill -0 == see if the PID exists
if kill -0 `cat $pid` > /dev/null 2>&1; then
echo -n stopping $command
echo "`date` Killing $command" >> $loglog
kill `cat $pid` > /dev/null 2>&1
while kill -0 `cat $pid` > /dev/null 2>&1; do
echo -n "."
sleep 1;
done
rm $pid
echo
else
retval=$?
echo no $command to stop because kill -0 of pid `cat $pid` failed with status $retval
fi
else
echo no $command to stop because no pid file $pid
fi
;;
(restart)
thiscmd=$0
args=$@
# stop the command
$thiscmd --config "${HBASE_CONF_DIR}" stop $command $args &
wait_until_done $!
# wait a user-specified sleep period
sp=${HBASE_RESTART_SLEEP:-3}
if [ $sp -gt 0 ]; then
sleep $sp
fi
# start the command
$thiscmd --config "${HBASE_CONF_DIR}" start $command $args &
wait_until_done $!
;;
(*)
echo $usage
exit 1
;;
esac