Shrijeet: The attachment didn't go through. Can you use pastebin ?
Thanks On Tue, Dec 11, 2012 at 12:05 PM, Shrijeet Paliwal <shrij...@rocketfuel.com>wrote: > 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[1] 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. > > [1] HBase version 0.92.2 , Hadoop version CDH3u0 > -Shrijeet >
