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From Andrew Purtell <apurt...@apache.org>
Subject Re: Adding 64-bit nodes to 32-bit cluster?
Date Mon, 15 Sep 2014 22:36:24 GMT
Only where we touch the native Hadoop libraries I think. If you have
specified compression implemented with a Hadoop native library, like
snappy or lzo, and have forgotten to deploy 64 bit native libraries,
and move to this 64 bit environment, you won't be able to open the
affected table(s) until native link issues are resolved.


On Mon, Sep 15, 2014 at 2:27 PM, Otis Gospodnetic
<otis.gospodnetic@gmail.com> wrote:
> Hi Esteban,
>
> Sorry, I meant to point that out in my original email - yeah, heap sizes,
> Xmx, and such will be different for 32-bit and 64-bit servers, but I was
> wondering if there is anything in HBase that could complain if, say, a
> region written on a 32-bit server moves to a 64-bit server.... or anything
> else of that sort that is HBase (or Hadoop) specific.
>
> Thanks,
> Otis
> --
> Monitoring * Alerting * Anomaly Detection * Centralized Log Management
> Solr & Elasticsearch Support * http://sematext.com/
>
>
>
> On Mon, Sep 15, 2014 at 5:19 PM, Esteban Gutierrez <esteban@cloudera.com>
> wrote:
>
>> Well, many HBase internal limits are based on the architecture so that
>> should impact you right away in resource utilization in the RSs, so a heap
>> or a setting that worked fine for your 32-bit RSs might need to be tuned
>> for a 64-bit environment. Probably might be easier to run a 32-bit JVM in
>> the 64-bit boxes and phase out the old 32-bit nodes after you test for a
>> while in a couple of the 64-bit nodes new settings.
>>
>> cheers,
>> esteban,
>>
>>
>> --
>> Cloudera, Inc.
>>
>>
>> On Mon, Sep 15, 2014 at 1:37 PM, Otis Gospodnetic <
>> otis.gospodnetic@gmail.com> wrote:
>>
>> > Hi,
>> >
>> > We are thinking of adding some new 64-bit servers to run RegionServers to
>> > our 32-bit HBase cluster.  Anything we should worry about or pay extra
>> > attention to?
>> >
>> > Thanks,
>> > Otis
>> > --
>> > Monitoring * Alerting * Anomaly Detection * Centralized Log Management
>> > Solr & Elasticsearch Support * http://sematext.com/
>> >
>>



-- 
Best regards,

   - Andy

Problems worthy of attack prove their worth by hitting back. - Piet
Hein (via Tom White)

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