hbase/bin/regionservers.sh

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#!/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.
# */
#
# Run a shell command on all regionserver hosts.
#
# Environment Variables
#
# HBASE_REGIONSERVERS File naming remote hosts.
# Default is ${HADOOP_CONF_DIR}/regionservers
# HADOOP_CONF_DIR Alternate conf dir. Default is ${HADOOP_HOME}/conf.
# HBASE_CONF_DIR Alternate hbase conf dir. Default is ${HBASE_HOME}/conf.
# HBASE_SLAVE_SLEEP Seconds to sleep between spawning remote commands.
# HBASE_SSH_OPTS Options passed to ssh when running remote commands.
#
# Modelled after $HADOOP_HOME/bin/slaves.sh.
usage="Usage: regionservers [--config <hbase-confdir>] command..."
# if no args specified, show usage
if [ $# -le 0 ]; then
echo $usage
exit 1
fi
bin=`dirname "${BASH_SOURCE-$0}"`
bin=`cd "$bin">/dev/null; pwd`
. "$bin"/hbase-config.sh
# If the regionservers file is specified in the command line,
# then it takes precedence over the definition in
# hbase-env.sh. Save it here.
HOSTLIST=$HBASE_REGIONSERVERS
if [ "$HOSTLIST" = "" ]; then
if [ "$HBASE_REGIONSERVERS" = "" ]; then
export HOSTLIST="${HBASE_CONF_DIR}/regionservers"
else
export HOSTLIST="${HBASE_REGIONSERVERS}"
fi
fi
regionservers=`cat "$HOSTLIST"`
if [ "$regionservers" = "localhost" ]; then
HBASE_REGIONSERVER_ARGS="\
-Dhbase.regionserver.port=16201 \
-Dhbase.regionserver.info.port=16301"
$"${@// /\\ }" ${HBASE_REGIONSERVER_ARGS} \
2>&1 | sed "s/^/$regionserver: /" &
else
for regionserver in `cat "$HOSTLIST"`; do
if ${HBASE_SLAVE_PARALLEL:-true}; then
ssh $HBASE_SSH_OPTS $regionserver $"${@// /\\ }" \
2>&1 | sed "s/^/$regionserver: /" &
else # run each command serially
ssh $HBASE_SSH_OPTS $regionserver $"${@// /\\ }" \
2>&1 | sed "s/^/$regionserver: /"
fi
if [ "$HBASE_SLAVE_SLEEP" != "" ]; then
sleep $HBASE_SLAVE_SLEEP
fi
done
fi
wait