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From "Harsh J (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-4359) Show dead RegionServer names in the HMaster info page
Date Fri, 09 Sep 2011 07:21:08 GMT

     [ https://issues.apache.org/jira/browse/HBASE-4359?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Harsh J updated HBASE-4359:

    Attachment: HBase Master UI - Dead Servers (Yes, still dead).png

Newer patch after a chat with Todd. Made it more consistent with the online listing.

In brightest day, in darkest night, no test case shall escape my sight:
 T E S T S

 T E S T S
Running org.apache.hadoop.hbase.master.TestMasterStatusServlet
Tests run: 5, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 1.028 sec

Results :

Tests run: 5, Failures: 0, Errors: 0, Skipped: 0

Also upped a new UI image after manual testing.

> Show dead RegionServer names in the HMaster info page
> -----------------------------------------------------
>                 Key: HBASE-4359
>                 URL: https://issues.apache.org/jira/browse/HBASE-4359
>             Project: HBase
>          Issue Type: Improvement
>          Components: master
>    Affects Versions: 0.90.4
>            Reporter: Harsh J
>            Assignee: Harsh J
>            Priority: Trivial
>             Fix For: 0.94.0
>         Attachments: HBASE-4359.r1.diff, HBASE-4359.r2.diff, HBase Master UI - Dead Servers
(Yes, still dead).png, HBase Master UI - Dead Servers.png
> Unlike other components of the cluster, like NameNode and JobTracker pages, the HMaster's
info page does not show any data on dead region servers. While an RS is stateless being a
good reason not to count dead nodes, I think having a list of dead nodes helps in cases where
an administrator would want to find out which nodes are missing out on RS action (hey, everyone
likes consistently spiking graphs! ;)).
> Following HBASE-3580, I think it makes sense to have a list of already maintained dead
nodes show up in the info UI.

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