On Jun 23, 2011, at 5:47 AM, Steve Loughran wrote:

> On 22/06/2011 17:27, Allen Wittenauer wrote:
>> 
>> On Jun 22, 2011, at 2:30 AM, Steve Loughran wrote:
>>> 
>>>  I haven't even heard of anyone who owns up to moving to ext4 fs underneath.
>> 
>>      Yes you do.
>> 
>>      :D
>> 
> 
> Did it work?
> and RHEL6.0?


        We've been using ext4 for HDFS and MR spill space (the rest are ext3) 
on CentOS 5.5 in some form or another for almost a year now.  No issues to 
report, other than it isn't ZFS (so we lost some functionality that we greatly 
miss).

        At this point, we're waiting for 6.1 or 6.2 before changing our Linux 
version.   RH (historically) has too much shift between 0->1->2 for it to be 
considered stable until the .2 release.  But we might jump on .1 anyway.

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