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https://issues.apache.org/jira/browse/FLINK-20011?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17229828#comment-17229828
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Arvid Heise commented on FLINK-20011:
-------------------------------------
Most likely a duplicate of FLINK-19964.
> PageRankITCase.testPrintWithRMatGraph hangs
> -------------------------------------------
>
> Key: FLINK-20011
> URL: https://issues.apache.org/jira/browse/FLINK-20011
> Project: Flink
> Issue Type: Bug
> Components: Library / Graph Processing (Gelly), Runtime /
> Coordination, Runtime / Network
> Affects Versions: 1.12.0
> Reporter: Dian Fu
> Priority: Critical
> Labels: test-stability
> Fix For: 1.12.0
>
>
> [https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=9121&view=logs&j=1fc6e7bf-633c-5081-c32a-9dea24b05730&t=80a658d1-f7f6-5d93-2758-53ac19fd5b19]
> {code}
> 2020-11-05T22:42:34.4186647Z "main" #1 prio=5 os_prio=0
> tid=0x00007fa98c00b800 nid=0x32f8 waiting on condition [0x00007fa995c12000]
> 2020-11-05T22:42:34.4187168Z java.lang.Thread.State: WAITING (parking)
> 2020-11-05T22:42:34.4187563Z at sun.misc.Unsafe.park(Native Method)
> 2020-11-05T22:42:34.4188246Z - parking to wait for <0x000000008736d120> (a
> java.util.concurrent.CompletableFuture$Signaller)
> 2020-11-05T22:42:34.4188881Z at
> java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
> 2020-11-05T22:42:34.4189351Z at
> java.util.concurrent.CompletableFuture$Signaller.block(CompletableFuture.java:1707)
> 2020-11-05T22:42:34.4189930Z at
> java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3323)
> 2020-11-05T22:42:34.4190509Z at
> java.util.concurrent.CompletableFuture.waitingGet(CompletableFuture.java:1742)
> 2020-11-05T22:42:34.4191059Z at
> java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1908)
> 2020-11-05T22:42:34.4191591Z at
> org.apache.flink.api.java.ExecutionEnvironment.execute(ExecutionEnvironment.java:893)
> 2020-11-05T22:42:34.4192208Z at
> org.apache.flink.graph.asm.dataset.DataSetAnalyticBase.execute(DataSetAnalyticBase.java:55)
> 2020-11-05T22:42:34.4192787Z at
> org.apache.flink.graph.drivers.output.Print.write(Print.java:48)
> 2020-11-05T22:42:34.4193373Z at
> org.apache.flink.graph.Runner.execute(Runner.java:454)
> 2020-11-05T22:42:34.4194156Z at
> org.apache.flink.graph.Runner.main(Runner.java:507)
> 2020-11-05T22:42:34.4194618Z at
> org.apache.flink.graph.drivers.DriverBaseITCase.getSystemOutput(DriverBaseITCase.java:208)
> 2020-11-05T22:42:34.4195192Z at
> org.apache.flink.graph.drivers.DriverBaseITCase.expectedCount(DriverBaseITCase.java:100)
> 2020-11-05T22:42:34.4195914Z at
> org.apache.flink.graph.drivers.PageRankITCase.testPrintWithRMatGraph(PageRankITCase.java:60)
> {code}
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