[jira] [Assigned] (FLINK-12768) FlinkKinesisConsumerTest.testSourceSynchronization unstable on Travis

["Thomas Weise (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-12768?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thomas Weise reassigned FLINK-12768:
------------------------------------

    Assignee: Thomas Weise

> FlinkKinesisConsumerTest.testSourceSynchronization unstable on Travis
> ---------------------------------------------------------------------
>
>                 Key: FLINK-12768
>                 URL: https://issues.apache.org/jira/browse/FLINK-12768
>             Project: Flink
>          Issue Type: Bug
>          Components: Connectors / Kinesis
>    Affects Versions: 1.9.0
>            Reporter: Till Rohrmann
>            Assignee: Thomas Weise
>            Priority: Critical
>              Labels: test-stability
>             Fix For: 1.9.0
>
>
> The {{FlinkKinesisConsumerTest.testSourceSynchronization}} seems to be unstable on Travis. It fails with 
> {code}
> [ERROR] testSourceSynchronization(org.apache.flink.streaming.connectors.kinesis.FlinkKinesisConsumerTest)  Time elapsed: 10.031 s  <<< FAILURE!
> java.lang.AssertionError: 
> Expected: iterable containing ["1", <Watermark @ -4>]
>      but: No item matched: <Watermark @ -4>
> 	at org.apache.flink.streaming.connectors.kinesis.FlinkKinesisConsumerTest.testSourceSynchronization(FlinkKinesisConsumerTest.java:950)
> {code}
> https://api.travis-ci.org/v3/job/541845510/log.txt
> While looking into the problem, I noticed that the test case takes 1 second to execute on my machine. I'm wondering whether this really needs to take this long. Moreover, the test code contains {{Thread.sleeps}} and uses {{Whiteboxing}} which we should avoid.



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