Remove:

hbase.master
hbase.regions.slop
hbase.regionserver.restart.on.zk.expire
hbase.regions.percheckin
hbase.zookeeper.property.tickTime

None of the above are pertinent any more.

Your 'hbase.hregion.memstore.flush.size' is very high.  Why so high?
Same for your hfile blocksize (Though IIRC, you have lots of small
records so you are probably trying to keep down the size of your
indices?)

Your 'hbase.regionserver.msginterval' is odd... Default is 3seconds
and you have 23seconds.  Any reason?

Your zk timeout is very high, higher than default 3 minutes in 0.90.
Maybe its OK though?

The 'hbase.zookeeper.property.maxClientCnxns' setting of 400 is
abnormal.  It shouldn't usually have to be this high if you reuse your
Configuration making HTables... but leave it as is.  Probably does no
harm.

Hope that helps Ted,
St.Ack




On Fri, Jan 21, 2011 at 8:09 PM, Ted Yu <[email protected]> wrote:
> Hi,
> I copied hbase-site.xml from our staging cluster running 0.20.6 to dev
> cluster which runs 0.90
>
> Can someone go over the attached file and see if any parameter is
> incorrectly set ?
>
> Thanks
>

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