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From "Sujay Rau (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (BIGTOP-614) Add HDFS HA tests
Date Sat, 16 Jun 2012 04:22:43 GMT

    [ https://issues.apache.org/jira/browse/BIGTOP-614?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13296102#comment-13296102
] 

Sujay Rau commented on BIGTOP-614:
----------------------------------

I'd definitely be interested in working on this problem.. but need help figuring out a starting
point.
                
> Add HDFS HA tests
> -----------------
>
>                 Key: BIGTOP-614
>                 URL: https://issues.apache.org/jira/browse/BIGTOP-614
>             Project: Bigtop
>          Issue Type: Test
>          Components: Tests
>            Reporter: Stephen Chu
>            Assignee: Stephen Chu
>         Attachments: HATests.patch, bigtop-614.patch
>
>
> In this patch, I am adding 2 tests and a test util class.
> 1) TestHAFailover: Fails over between the NameNodes a configurable number of times. Checks
the service state of each NN after each failover to ensure that the service state is correct.
> 2) TestKilLNNFailover: Kills the Active NN. Waits and fails over to the standby NN. Waits
and checks that the former standby is now active. Restarts the killed NN and checks that it
is now standby. Goes through this process a configurable number of times.
> 3) HATestUtil: Helper methods to fail over and kill the NameNodes.

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