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https://issues.apache.org/jira/browse/TEZ-877?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13909034#comment-13909034
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Hitesh Shah commented on TEZ-877:
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[~tassapola] Would it be simpler to just set yarn max am attempts to 1 for the
mini cluster for these tests?
> Output verification should be strict enough to disregard relaunched attempt.
> ----------------------------------------------------------------------------
>
> Key: TEZ-877
> URL: https://issues.apache.org/jira/browse/TEZ-877
> Project: Apache Tez
> Issue Type: Sub-task
> Affects Versions: 0.3.0
> Reporter: Tassapol Athiapinya
> Fix For: 0.3.0
>
>
> In current output verification framework, new attempt can pollute test result.
> For example, if test expects output of attempt 0 of a vertex to be N. If
> actual output is N-1, test will still pass because once output verification
> of N-1 fails, new attempt will be launched. We calculate sum of the vertex by
> summing input values and its attempt number+1. With new attempt, sum of the
> vertex is bumped by one to N and test will pass.
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