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From "HBase Review Board (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-1660) need a rolling restart script
Date Thu, 12 Aug 2010 19:48:16 GMT

    [ https://issues.apache.org/jira/browse/HBASE-1660?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12897920#action_12897920

HBase Review Board commented on HBASE-1660:

Message from: "Nicolas" <nspiegelberg@facebook.com>

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(Updated 2010-08-12 12:36:09.868512)

Review request for hbase.


- regionservers were being restarted in parallel.  need to restart serially
- wait for the master znode to expire before restarting the masters (this is especially necessary
with backup masters)


1. added 'restart' option to hbase-daemon.sh for unit-level restarting
2. added rolling-restart.sh script to perform system-level rolling restarts

(Note that I intentionally did not restart the ZooKeeper nodes, since those binaries will
need an update far less often)

This addresses bug HBASE-1660.

Diffs (updated)

  trunk/bin/hbase-daemon.sh 984635 
  trunk/bin/regionservers.sh 984635 
  trunk/bin/rolling-restart.sh PRE-CREATION 

Diff: http://review.cloudera.org/r/632/diff





> need a rolling restart script
> -----------------------------
>                 Key: HBASE-1660
>                 URL: https://issues.apache.org/jira/browse/HBASE-1660
>             Project: HBase
>          Issue Type: New Feature
>    Affects Versions: 0.20.0
>            Reporter: ryan rawson
>            Priority: Minor
>             Fix For: 0.92.0
> need a script that will do a rolling restart.
> It should be configurable in 2 ways:
> - how long to keep the daemon down per host
> - how long to wait between hosts
> for regionservers in my own hacky command line I used 10/60.

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