Stop hbase cluster, error: PID not found

When you want to stop hbase, you find that the Stop command executes after the error:

Stopping Hbasecat:/tmp/hbase-root-master.pid:no such file or directory

The reason is that the PID default directory in/tmp, very easy to lose, there will be a restart.

Workaround:

CD hbase/conf/

Vim hbase-env.sh

Release the annotated export hbase_pid_dir=/var/hadoop/pids, sync to the cluster, and restart Hadoop.

Another reason may be that you hbase is not running when you perform a stop: as shown in figure