Before performing any upgrades or uninstalling software, stop all of the Hadoop services in the following order:
Knox
Oozie
WebHCat
HiveServer2
Hive Metastore
HBase
YARN
HDFS
Zookeeper
Instructions
Stop Knox. Execute this command on the Knox host machine.
cd $GATEWAY_HOME su -l knox -c "bin/gateway.sh stop"
where
$GATEWAY_HOME
is the is the directory where Knox is installed. For example,/usr/lib/knox
.Stop Oozie. Execute these commands on the Oozie host machine.
su $OOZIE_USER /usr/lib/oozie/bin/oozie-stop.sh
where
$OOZIE_USER
is the Oozie user. For example, oozie.Stop WebHCat. On the WebHCat host machine, execute the following command:
su -l hcat -c "/usr/lib/hcatalog/sbin/webhcat_server.sh stop"
Stop Hive. Execute this command on the Hive Metastore and Hive Server2 host machine.
ps aux | awk '{print $1,$2}' | grep hive | awk '{print $2}' | xargs kill >/dev/null 2>&1
Stop HBase
Execute this command on all RegionServers:
su -l hbase -c "/usr/lib/hbase/bin/hbase-daemon.sh --config /etc/hbase/conf stop regionserver"
Execute this command on the HBase Master host machine:
su -l hbase -c "/usr/lib/hbase/bin/hbase-daemon.sh --config /etc/hbase/conf stop master"
Stop YARN
Execute this command on all NodeManagers:
su -l yarn -c "export HADOOP_LIBEXEC_DIR=/usr/lib/hadoop/libexec && /usr/lib/hadoop-yarn/sbin/yarn-daemon.sh --config /etc/hadoop/conf stop nodemanager"
Execute this command on the History Server host machine:
su -l mapred -c "export HADOOP_LIBEXEC_DIR=/usr/lib/hadoop/libexec && /usr/lib/hadoop-mapreduce/sbin/mr-jobhistory-daemon.sh --config /etc/hadoop/conf stop historyserver"
Execute this command on the ResourceManager host machine(s):
su -l yarn -c "export HADOOP_LIBEXEC_DIR=/usr/lib/hadoop/libexec && /usr/lib/hadoop-yarn/sbin/yarn-daemon.sh --config /etc/hadoop/conf stop resourcemanager"
Stop HDFS
Execute this command on all DataNodes:
su -l hdfs -c "/usr/lib/hadoop/sbin/hadoop-daemon.sh --config /etc/hadoop/conf stop datanode"
If you are not running NameNode HA (High Availability), stop the Secondary NameNode by executing this command on the Secondary NameNode host machine:
su -l hdfs -c "/usr/lib/hadoop/sbin/hadoop-daemon.sh --config /etc/hadoop/conf stop secondarynamenode”
Execute this command on the NameNode host machine(s):
su -l hdfs -c "/usr/lib/hadoop/sbin/hadoop-daemon.sh --config /etc/hadoop/conf stop namenode"
If you are running NameNode HA, stop the Zookeeper Failover Controllers (ZKFC) by executing this command on the NameNode host machines:
su -l hdfs -c "/usr/lib/hadoop/sbin/hadoop-daemon.sh --config /etc/hadoop/conf stop zkfc"
If you are running NameNode HA, stop the JournalNodes by executing these commands on the JournalNode host machines:
su $HDFS_USER /usr/lib/hadoop/sbin/hadoop-daemon.sh --config /etc/hadoop/conf stop journalnode
where
$HDFS_USER
is the HDFS user. For example, hdfs.
Stop ZooKeeper. Execute this command on the ZooKeeper host machine(s):
su - zookeeper -c "export ZOOCFGDIR=/etc/zookeeper/conf ; export ZOOCFG=zoo.cfg ;source /etc/zookeeper/conf/zookeeper-env.sh ; /usr/lib/zookeeper/bin/zkServer.sh stop"