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HBase >> mail # user >> One Region Server fails - all M/R jobs crash.


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Re: One Region Server fails - all M/R jobs crash.
On Fri, Nov 22, 2013 at 4:17 PM, Ted Yu <[EMAIL PROTECTED]> wrote:

> Can you pastebin snippet of:
> 1. task logs which show failure
> 2. region server log shortly before the crash
>
> Thanks
>
>
> On Fri, Nov 22, 2013 at 7:14 AM, David Koch <[EMAIL PROTECTED]> wrote:
>
> > Hello,
> >
> > We experience reliability problems when running M/R jobs over HBase
> tables.
> > Specifically, it suffices for one Region Server to crash in order to fail
> > all M/R jobs.
> >
> > My guess is that this is not normal with a replication factor of 3.
> >
> > The HBase version is 0.94.6 installed as part of of Cloudera 4.4. HBase
> > settings are pre-sets. Cluster size is 30 machines.
> >
> > What steps can I follow to improve the situation?
> >
> > Thank you,
> >
> > /David
> >
>