HBASE-3511. Allow rolling restart to apply to only RS or only masters
git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1068158 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Todd Lipcon
parent
e0dbeec47f
commit
69eec35098
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@ -101,6 +101,7 @@ Release 0.90.1 - Unreleased
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IMPROVEMENTS
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HBASE-3470 Check that hbase-default.xml is loaded from within jar
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HBASE-3508 LruBlockCache statistics thread should have a name
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HBASE-3511 Allow rolling restart to apply to only RS or only masters
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Release 0.90.0 - January 19th, 2011
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INCOMPATIBLE CHANGES
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@ -34,7 +34,7 @@
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#
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# Modelled after $HADOOP_HOME/bin/slaves.sh.
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usage="Usage: $0 [--config <hbase-confdir>] commands..."
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usage="Usage: $0 [--config <hbase-confdir>] [--rs-only] [--master-only]"
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bin=`dirname "$0"`
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bin=`cd "$bin">/dev/null; pwd`
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@ -48,58 +48,92 @@ then
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exit $errCode
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fi
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function usage() {
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echo $usage
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exit 1
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}
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RR_RS=1
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RR_MASTER=1
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for x in "$@" ; do
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case "$x" in
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--rs-only|-r)
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RR_RS=1
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RR_MASTER=0
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;;
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--master-only)
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RR_RS=0
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RR_MASTER=1
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;;
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*)
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echo Bad argument: $x
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usage
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exit 1
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;;
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esac
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done
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# quick function to get a value from the HBase config file
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distMode=`$bin/hbase org.apache.hadoop.hbase.util.HBaseConfTool hbase.cluster.distributed`
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if [ "$distMode" == 'false' ]; then
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if [ $RR_RS -ne 1 ] || [ $RR_MASTER -ne 1 ]; then
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echo Cant do selective rolling restart if not running distributed
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exit 1
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fi
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"$bin"/hbase-daemon.sh restart master
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else
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# stop all masters before re-start to avoid races for master znode
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"$bin"/hbase-daemon.sh --config "${HBASE_CONF_DIR}" stop master
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"$bin"/hbase-daemons.sh --config "${HBASE_CONF_DIR}" \
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--hosts "${HBASE_BACKUP_MASTERS}" stop master-backup
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if [ $RR_MASTER -eq 1 ]; then
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# stop all masters before re-start to avoid races for master znode
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"$bin"/hbase-daemon.sh --config "${HBASE_CONF_DIR}" stop master
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"$bin"/hbase-daemons.sh --config "${HBASE_CONF_DIR}" \
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--hosts "${HBASE_BACKUP_MASTERS}" stop master-backup
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# make sure the master znode has been deleted before continuing
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zparent=`$bin/hbase org.apache.hadoop.hbase.util.HBaseConfTool zookeeper.znode.parent`
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if [ "$zparent" == "null" ]; then zparent="/hbase"; fi
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zmaster=`$bin/hbase org.apache.hadoop.hbase.util.HBaseConfTool zookeeper.znode.master`
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if [ "$zmaster" == "null" ]; then zmaster="master"; fi
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zmaster=$zparent/$zmaster
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echo -n "Waiting for Master ZNode ${zmaster} to expire"
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while bin/hbase zkcli stat $zmaster >/dev/null 2>&1; do
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echo -n "."
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sleep 1
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done
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echo #force a newline
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# make sure the master znode has been deleted before continuing
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zparent=`$bin/hbase org.apache.hadoop.hbase.util.HBaseConfTool zookeeper.znode.parent`
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if [ "$zparent" == "null" ]; then zparent="/hbase"; fi
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zmaster=`$bin/hbase org.apache.hadoop.hbase.util.HBaseConfTool zookeeper.znode.master`
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if [ "$zmaster" == "null" ]; then zmaster="master"; fi
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zmaster=$zparent/$zmaster
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echo -n "Waiting for Master ZNode ${zmaster} to expire"
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while bin/hbase zkcli stat $zmaster >/dev/null 2>&1; do
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echo -n "."
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sleep 1
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done
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echo #force a newline
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# all masters are down, now restart
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"$bin"/hbase-daemon.sh --config "${HBASE_CONF_DIR}" start master
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"$bin"/hbase-daemons.sh --config "${HBASE_CONF_DIR}" \
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--hosts "${HBASE_BACKUP_MASTERS}" start master-backup
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# all masters are down, now restart
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"$bin"/hbase-daemon.sh --config "${HBASE_CONF_DIR}" start master
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"$bin"/hbase-daemons.sh --config "${HBASE_CONF_DIR}" \
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--hosts "${HBASE_BACKUP_MASTERS}" start master-backup
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echo "Wait a minute for master to come up join cluster"
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sleep 60
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echo "Wait a minute for master to come up join cluster"
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sleep 60
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# Master joing cluster will start in cleaning out regions in transition.
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# Wait until the master has cleaned out regions in transition before
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# giving it a bunch of work to do; master is vulnerable during startup
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zunassigned=`$bin/hbase org.apache.hadoop.hbase.util.HBaseConfTool zookeeper.znode.unassigned`
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if [ "$zunassigned" == "null" ]; then zunassigned="unassigned"; fi
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zunassigned="$zparent/$zunassigned"
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echo -n "Waiting for ${zunassigned} to empty"
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while true ; do
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unassigned=`$bin/hbase zkcli stat ${zunassigned} 2>&1 |grep -e 'numChildren = '|sed -e 's,numChildren = ,,'`
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if test 0 -eq ${unassigned}
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then
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break
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else
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echo -n " ${unassigned}"
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fi
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sleep 1
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done
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# unlike the masters, roll all regionservers one-at-a-time
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export HBASE_SLAVE_PARALLEL=false
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"$bin"/hbase-daemons.sh --config "${HBASE_CONF_DIR}" \
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--hosts "${HBASE_REGIONSERVERS}" restart regionserver
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# Master joing cluster will start in cleaning out regions in transition.
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# Wait until the master has cleaned out regions in transition before
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# giving it a bunch of work to do; master is vulnerable during startup
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zunassigned=`$bin/hbase org.apache.hadoop.hbase.util.HBaseConfTool zookeeper.znode.unassigned`
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if [ "$zunassigned" == "null" ]; then zunassigned="unassigned"; fi
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zunassigned="$zparent/$zunassigned"
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echo -n "Waiting for ${zunassigned} to empty"
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while true ; do
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unassigned=`$bin/hbase zkcli stat ${zunassigned} 2>&1 |grep -e 'numChildren = '|sed -e 's,numChildren = ,,'`
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if test 0 -eq ${unassigned}
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then
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break
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else
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echo -n " ${unassigned}"
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fi
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sleep 1
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done
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fi
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if [ $RR_RS -eq 1 ]; then
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# unlike the masters, roll all regionservers one-at-a-time
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export HBASE_SLAVE_PARALLEL=false
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"$bin"/hbase-daemons.sh --config "${HBASE_CONF_DIR}" \
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--hosts "${HBASE_REGIONSERVERS}" restart regionserver
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fi
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fi
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