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From Rakesh R <rake...@huawei.com>
Subject RE: BKJM - anyone using it?
Date Wed, 06 Nov 2013 04:46:25 GMT
One small correction to my previous mail thread, Bookkeeper latest version in 4.2.2 and planning
to upgrade to this version.


-----Original Message-----
From: Rakesh R 
Sent: 06 November 2013 10:08
To: hdfs-dev@hadoop.apache.org
Cc: Ivan Kelly; 'hadoop.uma@gmail.com'
Subject: RE: BKJM - anyone using it?

Hi Todd,

We have been extensively using the Bookkeeper based HA approach from the beginning. Also,
we have many internal and external customers which we have already deployed and started using
the BKJM based shared memory features.

Recently Bookkeeper has released 4.2.0 version, we have plans to upgrade Bookkeeper to this
version. As Uma mentioned, we are trying to work on the pending activities of HDFS-3399 JIRA.


-----Original Message-----
From: Uma Maheswara Rao G [mailto:hadoop.uma@gmail.com]
Sent: 06 November 2013 10:05
To: hdfs-dev@hadoop.apache.org
Cc: Ivan Kelly
Subject: Re: BKJM - anyone using it?

Hi Todd,

Did you see the JIRA HDFS-4265 ? which is under HDFS-3399 Recently Rakesh has updated the


On Wed, Nov 6, 2013 at 1:36 AM, Todd Lipcon <todd@cloudera.com> wrote:

> Hey folks,
> Is anyone using BKJM? The BookKeeper-based HA approach was developed 
> around the same time as QuorumJournalManager, but I haven't seen much 
> reported about it in the last year, and I'm not aware of anyone having 
> deployed BKJM in any production use cases.
> If no one is using it, I would propose removing it from the HDFS tree
> - if anyone would like to experiment with it in the future, it could 
> be built/developed on github as an external project. If a significant 
> community emerges in the future, we could consider moving it back in.
> (this isn't a formal vote thread, just trying to find out if it is 
> indeed
> abandoned)
> -Todd
> --
> Todd Lipcon
> Software Engineer, Cloudera

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