i executed in the follwing way.
jdk/bin/jps 451 jps 3541 journalnode
And i try to stop journal using
apache_hadoop/sbin/hadoop-daemon.sh stop journalnode no journalnode to stop
then i just killed the process and started it again
kill 3541 apache_hadoop/sbin/hadoop-daemon.sh start journalnode
and journalnode started normally
This issue not only for journal node , it happens all the nodes in hadoop cluster at some time
Why this issue? and How to solve it?