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https://issues.apache.org/jira/browse/IGNITE-10768?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16786952#comment-16786952
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Roman Kondakov commented on IGNITE-10768:
-----------------------------------------
[~amashenkov], please review the patch. Tests are ok.
The reason of the test blinking is the race when {{TestDiscoverySpi}} should
swallow prepare messages from the first transaction, but sometimes it swallows
several prepare messages from the first transaction and at least one prepare
message issued by the second transaction. In this case second transaction hangs
and tests fails. The fix is to wait for all prepare messages from the first tx
is arrived and then start the second one.
> MVCC:
> CacheMvccBasicContinuousQueryTest.testUpdateCountersGapClosedSimplePartitioned
> may hang
> ---------------------------------------------------------------------------------------------
>
> Key: IGNITE-10768
> URL: https://issues.apache.org/jira/browse/IGNITE-10768
> Project: Ignite
> Issue Type: Bug
> Components: mvcc
> Reporter: Roman Kondakov
> Assignee: Roman Kondakov
> Priority: Major
> Labels: CQ, mvcc_stabilization_stage_1
> Fix For: 2.8
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Test
> {{CacheMvccBasicContinuousQueryTest.testUpdateCountersGapClosedSimplePartitioned}}
> may hang sometimes.
>
> {noformat}
> Thread [name="test-runner-#209301%mvcc.CacheMvccBasicContinuousQueryTest%",
> id=228123, state=WAITING, blockCnt=5, waitCnt=89]
> at sun.misc.Unsafe.park(Native Method)
> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:304)
> at
> o.a.i.i.util.future.GridFutureAdapter.get0(GridFutureAdapter.java:179)
> at
> o.a.i.i.util.future.GridFutureAdapter.get(GridFutureAdapter.java:142)
> at
> o.a.i.i.processors.cache.mvcc.CacheMvccBasicContinuousQueryTest.checkUpdateCountersGapIsProcessedSimple(CacheMvccBasicContinuousQueryTest.java:346)
> at
> o.a.i.i.processors.cache.mvcc.CacheMvccBasicContinuousQueryTest.testUpdateCountersGapClosedSimplePartitioned(CacheMvccBasicContinuousQueryTest.java:257)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
> at
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
> at
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
> at
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
> at
> org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
> at
> org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
> at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55)
> at
> o.a.i.testframework.junits.GridAbstractTest$7.run(GridAbstractTest.java:2121)
> at java.lang.Thread.run(Thread.java:748)
> {noformat}
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