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https://issues.apache.org/jira/browse/FLINK-30328?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17682100#comment-17682100
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Matthias Pohl commented on FLINK-30328:
---------------------------------------
{quote}
I've checked it locally and made sure that it is a test issue, not a production
code issue. In particular, I've found no issues with:
- memory sharing (the feature that's tested)
- concurrency - except metric reading, which is expected
The problem in test is caused by the timings of metrics collections.
{quote}
[~roman] is there a chance that we can get it fixed before 1.17? Or would you
vote for lowering the priority of this issue?
> TaskManagerWideRocksDbMemorySharingITCase.testBlockCache failed
> ---------------------------------------------------------------
>
> Key: FLINK-30328
> URL: https://issues.apache.org/jira/browse/FLINK-30328
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Coordination, Runtime / State Backends
> Affects Versions: 1.17.0
> Reporter: Matthias Pohl
> Assignee: Roman Khachatryan
> Priority: Blocker
> Labels: pull-request-available, test-stability
> Fix For: 1.17.0
>
>
> {{TaskManagerWideRocksDbMemorySharingITCase.testBlockCache}} failed in this
> build:
> [https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=43763&view=logs&j=a57e0635-3fad-5b08-57c7-a4142d7d6fa9&t=2ef0effc-1da1-50e5-c2bd-aab434b1c5b7&l=9836]
> {code:java}
> Dec 06 16:33:59 [ERROR] Tests run: 1, Failures: 1, Errors: 0, Skipped: 0,
> Time elapsed: 12.926 s <<< FAILURE! - in
> org.apache.flink.test.state.TaskManagerWideRocksDbMemorySharingITCase
> Dec 06 16:33:59 [ERROR]
> org.apache.flink.test.state.TaskManagerWideRocksDbMemorySharingITCase.testBlockCache
> Time elapsed: 12.907 s <<< FAILURE!
> Dec 06 16:33:59 java.lang.AssertionError:
> Dec 06 16:33:59 Block cache usage reported by different tasks varies too
> much: DoubleSummaryStatistics{count=20, sum=3783523840.000000,
> min=189045056.000000, average=189176192.000000, max=189569600.000000}
> Dec 06 16:33:59 That likely mean that they use different cache objects
> expected:<1.895696E8> but was:<1.89045056E8>
> Dec 06 16:33:59 at org.junit.Assert.fail(Assert.java:89)
> Dec 06 16:33:59 at org.junit.Assert.failNotEquals(Assert.java:835)
> Dec 06 16:33:59 at org.junit.Assert.assertEquals(Assert.java:555)
> Dec 06 16:33:59 at
> org.apache.flink.test.state.TaskManagerWideRocksDbMemorySharingITCase.testBlockCache(TaskManagerWideRocksDbMemorySharingITCase.java:133)
> [...] {code}
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