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From Ryan Rawson <ryano...@gmail.com>
Subject Re: Apparent data loss on 90.4 rc2 after partial zookeeper network partition (on MapR)
Date Fri, 05 Aug 2011 16:45:49 GMT
The IO fencing was an accidental byproduct of how HDFS-200 was
implemented, so in fact, HBase won't run correctly on HDFS-265 which
does NOT have that IO fencing, right?



On Fri, Aug 5, 2011 at 9:42 AM, Jean-Daniel Cryans <jdcryans@apache.org> wrote:
> On Fri, Aug 5, 2011 at 8:52 AM, M. C. Srivas <mcsrivas@gmail.com> wrote:
>> The normal behavior would be for the HMaster to make the hlog read-only
>> before processing it.... very simple fencing and works on all Posix or
>> close-to-Posix systems.  Does that not work on HDFS?
>
> I'm sure you know the answer to that :)
>
> I agree it would be a better solution as it won't rely on the
> "particular" semantics of a single dfs.
>
> J-D
>

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