We provided a patch for 16 that could be retrofitted into 19
Our internal use of this has shown that jstack can hang in some
situations, and that just sending the sigquit is safer.
https://issues.apache.org/jira/browse/HADOOP-3994
Ryan LeCompte wrote:
For what it's worth, I started seeing these when I upgraded to 0.19. I
was using 10 reduces, but changed it to 30 reduces for my job and now
I don't see these errors any more.
Thanks,
Ryan
On Fri, Dec 5, 2008 at 2:44 PM, Sriram Rao <[email protected]> wrote:
Hi,
When a task tracker kills a non-responsive task, it prints out a
message "Task XXXXX not reported status for 600 seconds. Killing!".
The stack trace it then dumps out is that of the task tracker itself.
Is there a way to get the hung task to dump out its stack trace before
exiting? Would be nice if there was an easy way to send a kill -3 to
the hung process and then kill it.
Sriram
