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both Jobtrackers in standby mode

both Jobtrackers in standby mode

New Contributor

We are using CDH 4.4 and the issue is, after every couple hours, both Jobtracker go into standby mode. 

Even when I start the MR1 service, the JTs never go into Active mode and I use commandlne to put one of them in active mode.

After a few hours, without any errors in the logs, the JT goes back to standby mode. Stops listening on port 8021.


I tried increasing the maxclientConnection of zookeeper to 200, still the same.

How do I resolve this?


Re: both Jobtrackers in standby mode

Master Guru
Could you post one such JT log here via pastebin please?