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From Ted Yu <yuzhih...@gmail.com>
Subject Re: Frozen HConnectionManager.HConnectionImplementation#locateRegionInMeta
Date Thu, 24 Jul 2014 00:51:17 GMT
When this happens again, please capture jstack and pastebin it so that we
can know whether the deadlock was due to synchronization on masterAndZKLock.

If possible, please upgrade to 0.98.4

Cheers


On Wed, Jul 23, 2014 at 6:41 AM, Ted Yu <yuzhihong@gmail.com> wrote:

> There was no line number shown in the image.
>
> HBASE-11460 was fixed in 0.98.4 which got released yesterday. There is
> some similarity between stack trace shown in your image and the second
> stack trace of HBASE-11460.
>
> Cheers
>
> On Jul 23, 2014, at 5:24 AM, Anand Nalya <anand.nalya@gmail.com> wrote:
>
> > The image can be found at http://i.imgur.com/JTXw1cg.png
> >
> > - Anand
> >
> >
> > On 23 July 2014 18:44, Ted Yu <yuzhihong@gmail.com> wrote:
> >
> >> Your image attachment didn't go through.
> >>
> >> Mind posting it on third party website and provide a link ?
> >>
> >> Cheers
> >>
> >> On Jul 23, 2014, at 5:08 AM, Anand Nalya <anand.nalya@gmail.com> wrote:
> >>
> >>> Hi,
> >>>
> >>> I'm using HBase 0.98.3 with hadoop 2.4.0. We have application that
> calls
> >> HTable.put and in case of exception we have we create the table.
> >>>
> >>> The application is freezing in unexpected manner. YourKit is showing
> >> HConnectionManager.HConnectionImplementation#locateRegionInMeta as
> frozen.
> >> Please find attached the screenshot.
> >>>
> >>> Any ideas what might be the exact cause of this?
> >>>
> >>> Regards,
> >>> Anand
> >>
>

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