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https://issues.apache.org/jira/browse/STORM-2809?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16249664#comment-16249664
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Robert Joseph Evans commented on STORM-2809:
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I am seeing a lot of transitions in there to updating the blob. My guess is
that the blob changes right before it is killed (a.k.a it is deleted). This is
causing extra transitions to happen and slowing everything down. Possibly even
confusing the slot so it is stuck waiting for some timeout to happen.
> Integration test is failing consistently and topologies sometimes fail to
> start workers
> ---------------------------------------------------------------------------------------
>
> Key: STORM-2809
> URL: https://issues.apache.org/jira/browse/STORM-2809
> Project: Apache Storm
> Issue Type: Bug
> Affects Versions: 2.0.0
> Reporter: Stig Rohde Døssing
> Assignee: Robert Joseph Evans
> Fix For: 2.0.0
>
>
> The integration test has been failing fairly consistently since
> https://github.com/apache/storm/pull/2363. I tried running the test outside a
> VM with a locally installed Storm setup, and it has failed every time for me.
> Most runs seem to fail in ways that make it look like the integration test is
> just flaky (e.g. tuple windows not matching the calculated window), but in at
> least a few tests I saw the topology get submitted to Nimbus followed by
> about 3 minutes of nothing happening. The workers never started and the
> supervisor didn't seem aware of the scheduling. The only evidence that the
> topology was submitted was in the Nimbus log. This still happens even if the
> test topologies are killed with a timeout of 0, so there should be slots free
> for the next test immediately.
> I tried reverting https://github.com/apache/storm/pull/2363 and it seems to
> make the integration test pass much more often. Over 5 runs there was still
> an instance of a supervisor failing to start the workers, but the other 4
> passed.
> We should try to fix whatever is causing the supervisor to fail to start
> workers, and get the integration test more stable.
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