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From Uma Maheswara Rao G <mahesw...@huawei.com>
Subject RE: rolling restarts
Date Thu, 03 May 2012 14:10:09 GMT
Hi John,

Seems Ivan already worked on upgradation framework. I am not sure about the filesystem layout
changes with previous version as i was not aware of older versions code changes.

Pls Refer

  *   BOOKKEEPER-172<https://issues.apache.org/jira/browse/BOOKKEEPER-172>

You can find some details here: http://zookeeper.apache.org/bookkeeper/docs/trunk/bookkeeperConfig.html

Hope this will help you.



From: John Nagro [jnagro@hubspot.com]
Sent: Thursday, May 03, 2012 7:09 PM
To: bookkeeper-user@zookeeper.apache.org
Subject: rolling restarts

hello -

I have a cluster with 5 bk nodes, my client settings are to use 3 at a time with a quorum
of 2. I want to upgrade the software of a live cluster from an older 4.1-SNAPSHOT to a newer
one. I am under the impression that I should not need to upgrade the filesystem since I've
already done that when moving to 4.1.

Am I correct in that I should be able to bring down the nodes one at a time, replace the jar,
and bring them back up. As long as I do it one at a time the cluster should continue to operate

also - there doesn't appear to be any sort of graceful shutdown code, and the docs show ^C
in a few places - so thats how i've been bringing nodes down. that is still the standard procedure?


-John Nagro

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