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https://issues.apache.org/jira/browse/YARN-1069?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13742530#comment-13742530
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Vinod Kumar Vavilapalli commented on YARN-1069:
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At that point, aren't you better off trying to using MockRM, MockNM etc? Even
though they are named Mock*, they are the real ResourceManager, NodeManager
except they don't start the RPC servers.
> Deterministic MiniYARNCluster
> -----------------------------
>
> Key: YARN-1069
> URL: https://issues.apache.org/jira/browse/YARN-1069
> Project: Hadoop YARN
> Issue Type: Test
> Affects Versions: 2.1.0-beta
> Reporter: Maysam Yabandeh
> Assignee: Maysam Yabandeh
> Priority: Minor
>
> Currently the order of events in MiniYarnCluster is nondeterministic as the
> events are triggered by scheduled timers. This makes it difficult to write
> tests since some erroneous scenarios are triggered only after some particular
> sequence of events. An example is the bug in YARN-779 where without this
> control over events, writing a deterministic unit test is not possible. We
> should modify the source to allow both manual invocation of events as well as
> via existing periodic timers. MiniYarnCluster can then expose such methods
> for more control over events ordering.
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