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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 00:17:43 GMT

    [ https://issues.apache.org/jira/browse/BIGTOP-614?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13296035#comment-13296035
] 

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

Roman, on my dfsadmin test you said that the test can't assume it is being run from the namenode.
This is hard to do for HA tests since failovers need to be done from the namenode (I think...?).
Do you have any recommendations for dealing with this, as I am not sure how to make HA tests
more general to any node in the cluster.

Also, I'll fix the Shell user thing for the tests I have submitted so far.. makes much more
sense now. Thanks
                
> 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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