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From Rami Mankevich <ra...@amdocs.com>
Subject RE: Hbase question
Date Sun, 21 Apr 2013 07:53:40 GMT
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?

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:
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?

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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