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https://issues.apache.org/jira/browse/SPARK-3912?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Josh Rosen updated SPARK-3912:
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Labels: flaky-test (was: )
> FlumeStreamSuite is flaky, fails either with port binding issues or data not
> being reliably sent
> ------------------------------------------------------------------------------------------------
>
> Key: SPARK-3912
> URL: https://issues.apache.org/jira/browse/SPARK-3912
> Project: Spark
> Issue Type: Bug
> Components: Streaming
> Affects Versions: 1.1.0
> Reporter: Tathagata Das
> Assignee: Tathagata Das
> Priority: Critical
> Labels: flaky-test
> Fix For: 1.2.0
>
>
> Two problems.
> 1. Attempts to start the service to start on different possible ports (to
> avoid bind failures) was incorrect as the service is actually start lazily
> (when receiver starts, not when the flume input stream is created).
> 2. Lots of Thread.sleep was used to improve the probabilities that data sent
> through avro to flume receiver was being sent. However, the sending may fail
> for various unknown reasons, causing the test to fail.
> 3. Thread.sleep was also used to send one record per batch and checks were
> made on whether only one records was received in every batch. This was an
> overkill because all we need to test in this unit test is whether data is
> being sent and received or not, not about timings.
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