Chesnay Schepler created FLINK-27042:
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Summary: StreamTaskITCase#testMailboxMetricsScheduling is unstable
Key: FLINK-27042
URL: https://issues.apache.org/jira/browse/FLINK-27042
Project: Flink
Issue Type: Technical Debt
Components: Runtime / Task, Tests
Affects Versions: 1.15.0
Reporter: Chesnay Schepler
Fix For: 1.15.1, 1.16.0
{code:java}
java.lang.AssertionError:
Expected: a value greater than <0L>
but: <0L> was equal to <0L>
at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:20)
at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:8)
at
org.apache.flink.streaming.runtime.tasks.StreamTaskITCase.testMailboxMetricsScheduling(StreamTaskITCase.java:1823)
{code}
Can be reproduced locally by looping the test. Probably due to wrong
assumptions about 2 time measurements being different.
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