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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-1414) add server status logging chore to ServerManager
Date Wed, 13 May 2009 00:24:45 GMT

    [ https://issues.apache.org/jira/browse/HBASE-1414?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12708700#action_12708700

stack commented on HBASE-1414:

sure; commit what you have and then we can add metrics.  I think it'll subsume how you currently
calculate this stuff but we'll get to it when we get to it (smile).

> add server status logging chore to ServerManager
> ------------------------------------------------
>                 Key: HBASE-1414
>                 URL: https://issues.apache.org/jira/browse/HBASE-1414
>             Project: Hadoop HBase
>          Issue Type: Improvement
>            Reporter: Andrew Purtell
>            Assignee: Andrew Purtell
>            Priority: Minor
>             Fix For: 0.20.0
>         Attachments: hbase-1414.patch
> Adds a small chore to master.ServerManager that logs the number of reporting region servers,
the number of region servers declared dead (and their identity), and the average load. Uses
the metaScanner period. Useful for those that tail the master log to get a sense of system
health, or are considering writing Nagios monitors etc. which do the same. 

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