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From "Jim Kellerman (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HBASE-678) hbase needs a 'safe-mode'
Date Tue, 11 Nov 2008 23:05:44 GMT

     [ https://issues.apache.org/jira/browse/HBASE-678?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jim Kellerman resolved HBASE-678.
---------------------------------

    Resolution: Fixed

All tasks completed. Resolving issue.

> hbase needs a 'safe-mode'
> -------------------------
>
>                 Key: HBASE-678
>                 URL: https://issues.apache.org/jira/browse/HBASE-678
>             Project: Hadoop HBase
>          Issue Type: Improvement
>            Reporter: stack
>            Assignee: Jim Kellerman
>            Priority: Blocker
>             Fix For: 0.19.0
>
>
> Internally we have a cluster of thousands of regions.  We just did a hbase restart w/
master on new node.  Just so happened that one of the regionservers was running extra slow
(was downloaded by other processes).  Meant that its portion of the assigments was taking
a long time to come up...  While these regions were stuck in deploy mode, the cluster is not
useable.
> We need a sort of 'safe-mode' in hbase where clients fail if they try to attach to a
cluster not yet fully up.  UI should show when all assignments have been successfully made
so admin can at least see when they have a problematic regionserver in their midst.

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