On Fri, May 14, 2010 at 9:59 PM, Stack <st...@duboce.net> wrote:

> Thank you for writing the list Kevin.
>

Agreed - while I don't like hearing that HBase isn't working for people, the
best way for us to improve it is to get detailed reports of problems people
are having. Special thanks to krispyjala on IRC for helping us to track down
the infinite loop bug below.

>
> Sorry for inconvenience caused installing 0.20.4.  This release went
> through 5RCs -- the most we've ever done -- and was +1'd by at least
> four different committers.
>
> It looks like we have some work to do on our verification of RCs going
> forward.
>

Agreed that we need to step up our testing (especially end-to-end testing on
a variety of clusters). I'd also like to encourage those that are running
HBase in production to try release candidates early on their dev clusters -
we'd certainly delay a release if someone can show a regression.

-Todd



> On Fri, May 14, 2010 at 5:30 PM, Kevin Peterson <kevin...@gmail.com>
> wrote:
> > It's 5pm Friday, so I'm not going into a lot of detail, but we've also
> seen
> > problems with 0.20.4. Specifically:
> >
> > 1. possible deadlock HBASE-2545
> > 2. Regions not getting flushed with message that it exceeds max number of
> > store files putting it back on the flush queue.
> > 3. More regions assigned to RS than present in META (possibly assigned to
> > multiple RS)
> >
> > We've rolled back to 0.20.3, preferring to bear those ills we have than
> fly
> > to others we know not of. YMMV, our cluster was messed up when we
> started.
> >
>



-- 
Todd Lipcon
Software Engineer, Cloudera

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