| #!/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. |
| # */ |
| # |
| # 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. |
| # HADOOP_SLAVE_SLEEP Seconds to sleep between spawning remote commands. |
| # HADOOP_SLAVE_TIMEOUT Seconds to wait for timing out a remote command. |
| # HADOOP_SSH_OPTS Options passed to ssh when running remote commands. |
| # |
| # Modelled after $HADOOP_HOME/bin/slaves.sh. |
| |
| usage="Usage: $0 [--config <hbase-confdir>] [--rs-only] [--master-only] [--graceful]" |
| |
| bin=`dirname "$0"` |
| bin=`cd "$bin">/dev/null; pwd` |
| |
| . "$bin"/hbase-config.sh |
| |
| # start hbase daemons |
| errCode=$? |
| if [ $errCode -ne 0 ] |
| then |
| exit $errCode |
| fi |
| |
| function usage() { |
| echo $usage |
| exit 1 |
| } |
| |
| |
| RR_RS=1 |
| RR_MASTER=1 |
| RR_GRACEFUL=0 |
| |
| for x in "$@" ; do |
| case "$x" in |
| --rs-only|-r) |
| RR_RS=1 |
| RR_MASTER=0 |
| RR_GRACEFUL=0 |
| ;; |
| --master-only) |
| RR_RS=0 |
| RR_MASTER=1 |
| RR_GRACEFUL=0 |
| ;; |
| --graceful) |
| RR_RS=0 |
| RR_MASTER=0 |
| RR_GRACEFUL=1 |
| ;; |
| *) |
| echo Bad argument: $x |
| usage |
| exit 1 |
| ;; |
| esac |
| done |
| |
| # quick function to get a value from the HBase config file |
| # HBASE-6504 - only take the first line of the output in case verbose gc is on |
| distMode=`$bin/hbase org.apache.hadoop.hbase.util.HBaseConfTool hbase.cluster.distributed | head -n 1` |
| if [ "$distMode" == 'false' ]; then |
| if [ $RR_RS -ne 1 ] || [ $RR_MASTER -ne 1 ]; then |
| echo Cant do selective rolling restart if not running distributed |
| exit 1 |
| fi |
| "$bin"/hbase-daemon.sh restart master |
| else |
| zparent=`$bin/hbase org.apache.hadoop.hbase.util.HBaseConfTool zookeeper.znode.parent` |
| if [ "$zparent" == "null" ]; then zparent="/hbase"; fi |
| |
| if [ $RR_MASTER -eq 1 ]; then |
| # stop all masters before re-start to avoid races for master znode |
| "$bin"/hbase-daemon.sh --config "${HBASE_CONF_DIR}" stop master |
| "$bin"/hbase-daemons.sh --config "${HBASE_CONF_DIR}" \ |
| --hosts "${HBASE_BACKUP_MASTERS}" stop master-backup |
| |
| # make sure the master znode has been deleted before continuing |
| zmaster=`$bin/hbase org.apache.hadoop.hbase.util.HBaseConfTool zookeeper.znode.master` |
| if [ "$zmaster" == "null" ]; then zmaster="master"; fi |
| zmaster=$zparent/$zmaster |
| echo -n "Waiting for Master ZNode ${zmaster} to expire" |
| while ! "$bin"/hbase zkcli stat $zmaster 2>&1 | grep "Node does not exist"; do |
| echo -n "." |
| sleep 1 |
| done |
| echo #force a newline |
| |
| # all masters are down, now restart |
| "$bin"/hbase-daemon.sh --config "${HBASE_CONF_DIR}" start master |
| "$bin"/hbase-daemons.sh --config "${HBASE_CONF_DIR}" \ |
| --hosts "${HBASE_BACKUP_MASTERS}" start master-backup |
| |
| echo "Wait a minute for master to come up join cluster" |
| sleep 60 |
| |
| # Master joing cluster will start in cleaning out regions in transition. |
| # Wait until the master has cleaned out regions in transition before |
| # giving it a bunch of work to do; master is vulnerable during startup |
| zunassigned=`$bin/hbase org.apache.hadoop.hbase.util.HBaseConfTool zookeeper.znode.unassigned` |
| if [ "$zunassigned" == "null" ]; then zunassigned="unassigned"; fi |
| zunassigned="$zparent/$zunassigned" |
| echo -n "Waiting for ${zunassigned} to empty" |
| while true ; do |
| unassigned=`$bin/hbase zkcli stat ${zunassigned} 2>&1 |grep -e 'numChildren = '|sed -e 's,numChildren = ,,'` |
| if test 0 -eq ${unassigned} |
| then |
| break |
| else |
| echo -n " ${unassigned}" |
| fi |
| sleep 1 |
| done |
| fi |
| |
| if [ $RR_RS -eq 1 ]; then |
| # unlike the masters, roll all regionservers one-at-a-time |
| export HBASE_SLAVE_PARALLEL=false |
| "$bin"/hbase-daemons.sh --config "${HBASE_CONF_DIR}" \ |
| --hosts "${HBASE_REGIONSERVERS}" restart regionserver |
| fi |
| |
| if [ $RR_GRACEFUL -eq 1 ]; then |
| # gracefully restart all online regionservers |
| zkrs=`$bin/hbase org.apache.hadoop.hbase.util.HBaseConfTool zookeeper.znode.rs` |
| if [ "$zkrs" == "null" ]; then zkrs="rs"; fi |
| zkrs="$zparent/$zkrs" |
| online_regionservers=`$bin/hbase zkcli ls $zkrs 2>&1 | tail -1 | sed "s/\[//" | sed "s/\]//"` |
| for rs in $online_regionservers |
| do |
| rs_parts=(${rs//,/ }) |
| hostname=${rs_parts[0]} |
| echo "Gracefully restarting: $hostname" |
| "$bin"/graceful_stop.sh --config "${HBASE_CONF_DIR}" --restart --reload --debug "$hostname" |
| sleep 1 |
| done |
| fi |
| fi |