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From Bryan Talbot <btal...@aeriagames.com>
Subject Re: Multiple JBOD data directory
Date Wed, 05 Jun 2013 21:59:57 GMT
If you're using cassandra 1.2 then you have a choice specified in the yaml


# policy for data disk failures:
# stop: shut down gossip and Thrift, leaving the node effectively dead, but
#       can still be inspected via JMX.
# best_effort: stop using the failed disk and respond to requests based on
#              remaining available sstables.  This means you WILL see
obsolete
#              data at CL.ONE!
# ignore: ignore fatal errors a


-Bryan



On Wed, Jun 5, 2013 at 6:11 AM, Christopher Wirt <chris.wirt@struq.com>wrote:

> I would hope so. Just trying to get some confirmation from someone with
> production experience. ****
>
> ** **
>
> Thanks for your reply****
>
> ** **
>
> *From:* Shahab Yunus [mailto:shahab.yunus@gmail.com]
> *Sent:* 05 June 2013 13:31
> *To:* user@cassandra.apache.org
> *Subject:* Re: Multiple JBOD data directory****
>
> ** **
>
> Though, I am a newbie bust just had a thought regarding your question 'How
> will it handle requests for data which unavailable?', wouldn't the data be
> served in that case from other nodes where it has been replicated?****
>
> ** **
>
> Regards,****
>
> Shahab****
>
> ** **
>
> On Wed, Jun 5, 2013 at 5:32 AM, Christopher Wirt <chris.wirt@struq.com>
> wrote:****
>
> Hello, ****
>
>  ****
>
> We’re thinking about using multiple data directories each with its own
> disk and are currently testing this against a RAID0 config.****
>
>  ****
>
> I’ve seen that there is failure handling with multiple JBOD.****
>
>  ****
>
> e.g. ****
>
> We have two data directories mounted to separate drives****
>
> /disk1****
>
> /disk2****
>
> One of the drives fails ****
>
>  ****
>
> Will Cassandra continue to work?****
>
> How will it handle requests for data which unavailable?****
>
> If I want to add an additional drive what is the best way to go about
> redistributing the data? ****
>
>  ****
>
> Thanks,****
>
> Chris****
>
> ** **
>

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