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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.
David Koch 2013-11-22, 16:55
Sorry for the previous message, I attach the equired log files.

Regards,

David
On Fri, Nov 22, 2013 at 5:53 PM, David Koch <[EMAIL PROTECTED]> wrote:

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>
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> 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
>> >
>>
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