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https://issues.apache.org/jira/browse/IGNITE-12927?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17089451#comment-17089451
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Ignite TC Bot commented on IGNITE-12927:
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{panel:title=Branch: [pull/7709/head] Base: [master] : No blockers
found!|borderStyle=dashed|borderColor=#ccc|titleBGColor=#D6F7C1}{panel}
[TeamCity *--> Run :: All*
Results|https://ci.ignite.apache.org/viewLog.html?buildId=5245270&buildTypeId=IgniteTests24Java8_RunAll]
> The CacheGroupsMetricsRebalanceTest.testRebalancingLastCancelledTime is flacky
> ------------------------------------------------------------------------------
>
> Key: IGNITE-12927
> URL: https://issues.apache.org/jira/browse/IGNITE-12927
> Project: Ignite
> Issue Type: Bug
> Reporter: Amelchev Nikita
> Assignee: Amelchev Nikita
> Priority: Minor
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The {{CacheGroupsMetricsRebalanceTest.testRebalancingLastCancelledTime}} is
> flacky.
> [TC
> history.|https://ci.ignite.apache.org/project.html?projectId=IgniteTests24Java8&testNameId=-448222889376376497&branch=%3Cdefault%3E&tab=testDetails]
> {noformat}
> java.lang.IllegalStateException: Duplicate key 1472820775 (attempted merging
> values 1472820775 and 1472820775)
> at
> java.base/java.util.stream.Collectors.duplicateKeyException(Collectors.java:133)
> at
> java.base/java.util.stream.Collectors.lambda$uniqKeysMapAccumulator$1(Collectors.java:180)
> at
> java.base/java.util.stream.ReduceOps$3ReducingSink.accept(ReduceOps.java:169)
> at
> java.base/java.util.stream.IntPipeline$1$1.accept(IntPipeline.java:180)
> at
> java.base/java.util.Random$RandomIntsSpliterator.forEachRemaining(Random.java:1044)
> at
> java.base/java.util.Spliterator$OfInt.forEachRemaining(Spliterator.java:699)
> at
> java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
> at
> java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
> at
> java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913)
> at
> java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
> at
> java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578)
> at
> org.apache.ignite.internal.processors.cache.CacheGroupsMetricsRebalanceTest.testRebalancingLastCancelledTime(CacheGroupsMetricsRebalanceTest.java:315)
> {noformat}
> The reason is that randomly generated keys can be duplicated and cant be
> collected from stream .
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