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HBASE-8716 Fixups/Improvements for graceful_stop.sh/region_mover.rb 

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1494449 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Michael Stack 2013-06-19 04:42:15 +00:00
parent 6fd96ef4e9
commit 051f7843f2
1 changed files with 40 additions and 14 deletions
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54
bin/graceful_stop.sh
View File

@ -23,13 +23,14 @@
# Move regions off a server then stop it. Optionally restart and reload.
# Turn off the balancer before running this script.
function usage {
echo "Usage: graceful_stop.sh [--config <conf-dir>] [--restart [--reload]] [--thrift] [--rest] <hostname>"
echo "Usage: graceful_stop.sh [--config <conf-dir>] [-d] [-e] [--restart [--reload]] [--thrift] [--rest] <hostname>"
echo " thrift If we should stop/start thrift before/after the hbase stop/start"
echo " rest If we should stop/start rest before/after the hbase stop/start"
echo " restart If we should restart after graceful stop"
echo " reload Move offloaded regions back on to the restarted server"
echo " debug Print helpful debug information"
echo " reload Move offloaded regions back on to the restarted server"
echo " d|debug Print helpful debug information"
echo " hostname Hostname of server we are to stop"
echo " e|failfast Set -e so exit immediately if any command exits with non-zero status"
exit 1
}
@ -47,6 +48,7 @@ reload=
debug=
thrift=
rest=
failfast=
while [ $# -gt 0 ]
do
case "$1" in
@ -54,7 +56,10 @@ do
--rest) rest=true; shift;;
--restart) restart=true; shift;;
--reload) reload=true; shift;;
--debug) debug="--debug"; shift;;
--failfast) ;&
-e) failfast=true; shift;;
--debug) ;&
-d) debug="--debug"; shift;;
--) shift; break;;
-*) usage ;;
*) break;; # terminate while loop
@ -66,44 +71,65 @@ if [ $# -lt 1 ]; then
usage
fi
# Emit a log line w/ iso8901 date prefixed
log() {
echo `date +%Y-%m-%dT%H:%M:%S` $1
}
# See if we should set fail fast before we do anything.
if [ "$failfast" != "" ]; then
log "Set failfast, will exit immediately if any command exits with non-zero status"
set -e
fi
hostname=$1
filename="/tmp/$hostname"
# Run the region mover script.
echo "Disabling balancer! (if required)"
log "Disabling load balancer"
HBASE_BALANCER_STATE=`echo 'balance_switch false' | "$bin"/hbase --config ${HBASE_CONF_DIR} shell | tail -3 | head -1`
echo "Previous balancer state was $HBASE_BALANCER_STATE"
echo "Unloading $hostname region(s)"
log "Previous balancer state was $HBASE_BALANCER_STATE"
log "Unloading $hostname region(s)"
HBASE_NOEXEC=true "$bin"/hbase --config ${HBASE_CONF_DIR} org.jruby.Main "$bin"/region_mover.rb --file=$filename $debug unload $hostname
echo "Unloaded $hostname region(s)"
# Stop the server. Have to put hostname into its own little file for hbase-daemons.sh
log "Unloaded $hostname region(s)"
# Stop the server(s). Have to put hostname into its own little file for hbase-daemons.sh
hosts="/tmp/$(basename $0).$$.tmp"
echo $hostname >> $hosts
if [ "$thrift" != "" ]; then
log "Stopping thrift"
"$bin"/hbase-daemons.sh --config ${HBASE_CONF_DIR} --hosts ${hosts} stop thrift
fi
if [ "$rest" != "" ]; then
log "Stopping rest"
"$bin"/hbase-daemons.sh --config ${HBASE_CONF_DIR} --hosts ${hosts} stop rest
fi
log "Stopping regionserver"
"$bin"/hbase-daemons.sh --config ${HBASE_CONF_DIR} --hosts ${hosts} stop regionserver
if [ "$restart" != "" ]; then
log "Restarting regionserver"
"$bin"/hbase-daemons.sh --config ${HBASE_CONF_DIR} --hosts ${hosts} start regionserver
if [ "$thrift" != "" ]; then
log "Restarting thrift"
# -b 0.0.0.0 says listen on all interfaces rather than just default.
"$bin"/hbase-daemons.sh --config ${HBASE_CONF_DIR} --hosts ${hosts} start thrift -b 0.0.0.0
fi
if [ "$rest" != "" ]; then
log "Restarting rest"
"$bin"/hbase-daemons.sh --config ${HBASE_CONF_DIR} --hosts ${hosts} start rest
fi
if [ "$reload" != "" ]; then
echo "Reloading $hostname region(s)"
log "Reloading $hostname region(s)"
HBASE_NOEXEC=true "$bin"/hbase --config ${HBASE_CONF_DIR} org.jruby.Main "$bin"/region_mover.rb --file=$filename $debug load $hostname
echo "Reloaded $hostname region(s)"
log "Reloaded $hostname region(s)"
fi
fi
# Restore balancer state
if [ $HBASE_BALANCER_STATE != "false" ]; then
echo "Restoring balancer state to " $HBASE_BALANCER_STATE
echo "balance_switch $HBASE_BALANCER_STATE" | "$bin"/hbase --config ${HBASE_CONF_DIR} shell &> /dev/null
log "Restoring balancer state to " $HBASE_BALANCER_STATE
log "balance_switch $HBASE_BALANCER_STATE" | "$bin"/hbase --config ${HBASE_CONF_DIR} shell &> /dev/null
fi
# Cleanup tmp files.