I am facing strange issue while starting the datanode using ambari.
It shows started successfully, and than after few seconds, It got stopped, I have tried service restart and all basics things but none of them seems to be worked.
Does anybody have some idea or faced this issue before ?
Can you please share the logs of datanode service ? and also the ambari operation logs
please share the logs from /var/log/hadoop/hdfs/hadoop-hdfs-datanode-*.log
And mean while refer try following steps if this resolved your issue:-
1. Stop the services on that node from ambari.
2. Make sure hostname, iptables, selinux are stop
3. Check ps -aef for each process and kill it from cli [if you are able to see the process running]
4. Start the process from ambari.
let me know if it works.