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On Tue, Dec 11, 2012 at 12:05 PM, Shrijeet Paliwal
> Hello All,
> If our read of https://issues.apache.org/jira/browse/HBASE-5898 is
> correct it talks about three issues:
> #1 Contention on a lock causing bad performance
> #2 HDFS slowness causing IPC handlers blocked for large times.
> #3 A mysterious bug which causes what looks like a deadlock
> In out environment we are seeing #3 (ish) signals. Attached is the
> stack trace. One of our region server got blocked (almost all of IPC
> handlers) for 11 hours, so it can not be #1 OR #2.
> We have not back ported the patch yet so cant say if it fixes the issue or
> not. Also it is difficult to reproduce. There is a rumor that a program to
> reproduce this issue exist, does it?
> Eager to hear thoughts.
>  HBase version 0.92.2 , Hadoop version CDH3u0