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From Mohammad Tariq <donta...@gmail.com>
Subject Re: Hbase question
Date Sun, 21 Apr 2013 17:16:02 GMT
Hello Rami,

       Hbase is not built on top of Hadoop. Hdfs is not a must, but
provided you a better storage option(courtesy Hdfs's distributed style
storage, scalability etc). You could use it with other FS as well, even
with your local FS. And you could definitely use MR jobs to efficiently
handle stored in your Hbase store. But MR is again not a must. Not only
this Hbase allso provided other APIs as well like Java and Thrift.


Warm Regards,

On Sun, Apr 21, 2013 at 1:23 PM, Rami Mankevich <ramim@amdocs.com> wrote:

> I have additional question:
> Hbase is built on top of hadoop.
> Does HBases uses HDFS only of hadoop or uses Map Reduce Jobs engine as
> well?
> Thanks a lot!
> From: Rami Mankevich
> Sent: Tuesday, April 09, 2013 8:52 PM
> To: 'user@hbase.apache.org'
> Cc: 'Andrew Purtell'
> Subject: RE: Hbase question
> First of all - thanks  for the quick response.
> Basically threads I want to open are for my own  internal structure
> updates and I guess have no relations to HBase internal structures.
> All I want is initiations for some asynchronous structure updates as part
> of coprocessor execution in order  not to block user reponse.
> The only reason I was asking is to be sure Hbase will not kill those
> threads.
> As I understand - shouldn't be any issue with that. Am I correct?
> In addition - Is there any Hbase Thread pool I can use?
> Thanks
> From: Andrew Purtell [mailto:apurtell@apache.org]<mailto:[mailto:
> apurtell@apache.org]>
> Sent: Tuesday, April 09, 2013 6:53 PM
> To: Rami Mankevich
> Cc: apurtell@apache.org<mailto:apurtell@apache.org>
> Subject: Re: Hbase question
> Hi Rami,
> It is no problem to create threads in a coprocessor as a generic answer.
> More specifically there could be issues depending on exactly what you want
> to do, since coprocessor code changes HBase internals. Perhaps you could
> say a bit more. I also encourage you to ask this question on
> user@hbase.apache.org<mailto:user@hbase.apache.org> so other contributors
> can chime in too.
> On Tuesday, April 9, 2013, Rami Mankevich wrote:
> Hey
> According to the Hbase documentation you are one of contrinuters to the
> HBase project
> I would like to raise some question when nobody can basically advice me:
> In context of coprocessors I want to raise some threads.
> Do you see any problems with that?
> Thanks
> This message and the information contained herein is proprietary and
> confidential and subject to the Amdocs policy statement, you may review at
> http://www.amdocs.com/email_disclaimer.asp
> --
> Best regards,
>    - Andy
> Problems worthy of attack prove their worth by hitting back. - Piet Hein
> (via Tom White)

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