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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4605) should run old version of unit tests to check back-compatibility
Date Tue, 11 Nov 2008 10:36:46 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4605?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12646521#action_12646521
] 

Steve Loughran commented on HADOOP-4605:
----------------------------------------

>> I would prefer to have a separate set of tests, the compatibility tests, that [ ...
]

>Yes, I agree. And some of our current tests fit this description and some do not. So,
to start out down this path, we >can split out those existing tests that are suitable (i.e.,
only use public APIs). Right?

Yes, though as those test cases also bring up/tear down the cluster in-VM, you aren't going
to be able to run them against a different hadoop release than in the classpath. 

The compatibility tests will need to take the URL of a job tracker that is already deployed,
run their tests and push out the results, no start/stop of the cluster per test-case. This
will be faster anyway, it just complicates the test setup process

> should run old version of unit tests to check back-compatibility
> ----------------------------------------------------------------
>
>                 Key: HADOOP-4605
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4605
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: test
>            Reporter: Doug Cutting
>
> We should test back-compatibility by running unit tests from a prior release.

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