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From Esteban Gutierrez <este...@cloudera.com>
Subject Re: HBase regionserver SIGSEGV periodically
Date Fri, 10 Jun 2016 17:07:54 GMT
Hi Harry,

As you mentioned, moving to JDK8 is a good idea. There are many known
issues with G1GC and JDK7 that make using the G1 collector unreliable and
you will see that kind of crashes once in a while.

cheers,
esteban.


--
Cloudera, Inc.


On Fri, Jun 10, 2016 at 9:35 AM, Harry Waye <harry@arachnys.com> wrote:

> Our regionservers are periodically seg faulting, roughly once a day, and I
> would appreciate some help debugging. Some version details:
>
> Java HotSpot(TM) 64-Bit Server VM (24.80-b11) for linux-amd64 JRE
> (1.7.0_80-b15), built on Apr 10 2015 19:53:14 by "java_re" with gcc 4.3.0
> 20080428 (Red Hat 4.3.0-8)
>
> hbase-regionserver 0.98.6+cdh5.3.2+83-1.cdh5.3.2.p0.17~precise-cdh5.3.2
>
> The segfault log output is:
> https://gist.github.com/hazzadous/aa5013f50824658e75b75fd860c73f02
>
> This has details of the java options as well.  Heap is ~46GB using G1GC.
>
> The log output from HBase around this event is:
> https://gist.github.com/hazzadous/4b94b5dcb351a360881c04fb54b5a70f
>
> I'm going to attempt to update to java 8 to see if there's any improvements
> but any analysis will be appreciated.
>
> Harry
>

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