I have a check monitoring the page jobtracker:50030/jobtracker.jsp,
and the check shows timeout (180 sec) pretty often.
Once I jump and browse to the page it actually take me from 5 sec to 5
minutes to render.
the heap size is 12G. from top command it is not used up.
CPU load is 1 ish (in all 5, 10, 15 load)
disk is far from full
Swap is untouched
Any input for how to troubleshoot this will be useful and greatly grateful