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https://issues.apache.org/jira/browse/FLINK-13662?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16975031#comment-16975031
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Franz Thoma commented on FLINK-13662:
-------------------------------------

The test heavily depends on the {{processElement()}} thread finishing within 
100ms. Maybe on a CI system and under load, this is not always the case. We 
could increase the timeout to 200ms or even more; this should not be a problem 
for the successful case (since {{trySync()}} will return as soon as the thread 
is finished).

> FlinkKinesisProducerTest.testBackpressure failed on Travis
> ----------------------------------------------------------
>
>                 Key: FLINK-13662
>                 URL: https://issues.apache.org/jira/browse/FLINK-13662
>             Project: Flink
>          Issue Type: Bug
>          Components: Connectors / Kinesis, Tests
>    Affects Versions: 1.9.0, 1.10.0
>            Reporter: Till Rohrmann
>            Priority: Critical
>              Labels: test-stability
>             Fix For: 1.10.0
>
>
> The {{FlinkKinesisProducerTest.testBackpressure}} failed on Travis with
> {code}
> 14:45:50.489 [ERROR] Failures: 
> 14:45:50.489 [ERROR]   FlinkKinesisProducerTest.testBackpressure:298 Flush 
> triggered before reaching queue limit
> {code}
> https://api.travis-ci.org/v3/job/569262823/log.txt



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