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HBase >> mail # dev >> Smarter Region assignment policy?


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Vladimir Rodionov 2013-07-22, 17:56
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Ted Yu 2013-07-22, 18:06
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Vladimir Rodionov 2013-07-22, 18:43
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lars hofhansl 2013-07-22, 18:55
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Re: Smarter Region assignment policy?
This is the one:
https://issues.apache.org/jira/browse/HBASE-4402
I assume you let the master wait sufficiently to give all RegionServer a chance to sign in?

-- Lars
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From: lars hofhansl <[EMAIL PROTECTED]>
To: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
Sent: Monday, July 22, 2013 11:55 AM
Subject: Re: Smarter Region assignment policy?
I faintly remember there was a jira that attempted to assign the regions to the same region servers after a restart based on existing .META. information (if possible).
Will try to find that and see why it is not working as expected.
-- Lars

________________________________
From: Vladimir Rodionov <[EMAIL PROTECTED]>
To: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
Sent: Monday, July 22, 2013 11:43 AM
Subject: RE: Smarter Region assignment policy?
Yes, its related but not what I am looking for.

Locality index is approaching to 100% after major compaction of all tables. Its often > 90% during regular operation of a cluster,
but is far below 50% when cluster restarts. Can assignment manager take into account previous region assignments on
node/cluster start up? That is what I am looking for. How hard is to implement this feature?

Best regards,
Vladimir Rodionov
Principal Platform Engineer
Carrier IQ, www.carrieriq.com
e-mail: [EMAIL PROTECTED]

________________________________________
From: Ted Yu [[EMAIL PROTECTED]]
Sent: Monday, July 22, 2013 11:06 AM
To: [EMAIL PROTECTED]
Subject: Re: Smarter Region assignment policy?

Please take a look at https://issues.apache.org/jira/browse/HBASE-4755

On Mon, Jul 22, 2013 at 10:56 AM, Vladimir Rodionov <[EMAIL PROTECTED]
> wrote:

> It seems that current (0.94.6) region assignment on start up policy is not
> that smart and does not utilize hdfs block locality
> Are there any open HBase JIRA ticket(s) that addresses the issue?
>
> Best regards,
> Vladimir Rodionov
> Principal Platform Engineer
> Carrier IQ, www.carrieriq.com
> e-mail: [EMAIL PROTECTED]
>
>
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Confidentiality Notice:  The information contained in this message, including any attachments hereto, may be confidential and is intended to be read only by the individual or entity to whom this message is addressed. If the reader of this message is not the intended recipient or an agent or designee of the intended recipient, please note that any review, use, disclosure or distribution of this message or its attachments, in any form, is strictly prohibited.  If you have received this message in error, please immediately notify the sender and/or [EMAIL PROTECTED] and delete or destroy any copy of this message and its attachments.
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Vladimir Rodionov 2013-07-22, 22:30
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lars hofhansl 2013-07-22, 23:04
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Vladimir Rodionov 2013-07-22, 23:21
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lars hofhansl 2013-07-23, 00:09
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Ted Yu 2013-07-23, 15:58
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Vladimir Rodionov 2013-07-23, 17:39
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lars hofhansl 2013-07-23, 17:41
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Elliott Clark 2013-07-22, 19:12