[ 
https://issues.apache.org/jira/browse/FLINK-22111?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17324388#comment-17324388
 ] 

Guowei Ma commented on FLINK-22111:
-----------------------------------

https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=16710&view=logs&j=d44f43ce-542c-597d-bf94-b0718c71e5e8&t=03dca39c-73e8-5aaf-601d-328ae5c35f20&l=14747

> ClientTest.testSimpleRequests fail
> ----------------------------------
>
>                 Key: FLINK-22111
>                 URL: https://issues.apache.org/jira/browse/FLINK-22111
>             Project: Flink
>          Issue Type: Bug
>          Components: Runtime / Queryable State
>    Affects Versions: 1.13.0
>            Reporter: Guowei Ma
>            Priority: Major
>              Labels: test-stability
>
> https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=16056&view=logs&j=3d12d40f-c62d-5ec4-6acc-0efe94cc3e89&t=5d6e4255-0ea8-5e2a-f52c-c881b7872361&l=15421
> {code:java}
> 21:47:16,289 [nioEventLoopGroup-4-3] WARN  
> org.apache.flink.shaded.netty4.io.netty.channel.ChannelInitializer [] - 
> Failed to initialize a channel. Closing: [id: 0x40eab0f6, L:/172.29.0.2:43846 
> - R:/172.29.0.2:42436]
> org.apache.flink.shaded.netty4.io.netty.channel.ChannelPipelineException: 
> org.apache.flink.queryablestate.network.ClientTest$1 is not a @Sharable 
> handler, so can't be added or removed multiple times.
>       at 
> org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline.checkMultiplicity(DefaultChannelPipeline.java:600)
>  ~[flink-shaded-netty-4.1.49.Final-12.0.jar:?]
>       at 
> org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline.addLast(DefaultChannelPipeline.java:202)
>  ~[flink-shaded-netty-4.1.49.Final-12.0.jar:?]
>       at 
> org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline.addLast(DefaultChannelPipeline.java:381)
>  ~[flink-shaded-netty-4.1.49.Final-12.0.jar:?]
>       at 
> org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline.addLast(DefaultChannelPipeline.java:370)
>  ~[flink-shaded-netty-4.1.49.Final-12.0.jar:?]
>       at 
> org.apache.flink.queryablestate.network.ClientTest$5.initChannel(ClientTest.java:897)
>  ~[test-classes/:?]
>       at 
> org.apache.flink.queryablestate.network.ClientTest$5.initChannel(ClientTest.java:890)
>  ~[test-classes/:?]
>       at 
> org.apache.flink.shaded.netty4.io.netty.channel.ChannelInitializer.initChannel(ChannelInitializer.java:129)
>  [flink-shaded-netty-4.1.49.Final-12.0.jar:?]
>       at 
> org.apache.flink.shaded.netty4.io.netty.channel.ChannelInitializer.handlerAdded(ChannelInitializer.java:112)
>  [flink-shaded-netty-4.1.49.Final-12.0.jar:?]
>       at 
> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.callHandlerAdded(AbstractChannelHandlerContext.java:938)
>  [flink-shaded-netty-4.1.49.Final-12.0.jar:?]
>       at 
> org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline.callHandlerAdded0(DefaultChannelPipeline.java:609)
>  [flink-shaded-netty-4.1.49.Final-12.0.jar:?]
>       at 
> org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline.access$100(DefaultChannelPipeline.java:46)
>  [flink-shaded-netty-4.1.49.Final-12.0.jar:?]
>       at 
> org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline$PendingHandlerAddedTask.execute(DefaultChannelPipeline.java:1463)
>  [flink-shaded-netty-4.1.49.Final-12.0.jar:?]
>       at 
> org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline.callHandlerAddedForAllHandlers(DefaultChannelPipeline.java:1115)
>  [flink-shaded-netty-4.1.49.Final-12.0.jar:?]
>       at 
> org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline.invokeHandlerAddedIfNeeded(DefaultChannelPipeline.java:650)
>  [flink-shaded-netty-4.1.49.Final-12.0.jar:?]
>       at 
> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannel$AbstractUnsafe.register0(AbstractChannel.java:502)
>  [flink-shaded-netty-4.1.49.Final-12.0.jar:?]
>       at 
> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannel$AbstractUnsafe.access$200(AbstractChannel.java:417)
>  [flink-shaded-netty-4.1.49.Final-12.0.jar:?]
>       at 
> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannel$AbstractUnsafe$1.run(AbstractChannel.java:474)
>  [flink-shaded-netty-4.1.49.Final-12.0.jar:?]
>       at 
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:164)
>  [flink-shaded-netty-4.1.49.Final-12.0.jar:?]
>       at 
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472)
>  [flink-shaded-netty-4.1.49.Final-12.0.jar:?]
>       at 
> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:500)
>  [flink-shaded-netty-4.1.49.Final-12.0.jar:?]
>       at 
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
>  [flink-shaded-netty-4.1.49.Final-12.0.jar:?]
>       at 
> org.apache.flink.shaded.netty4.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
>  [flink-shaded-netty-4.1.49.Final-12.0.jar:?]
>       at 
> org.apache.flink.shaded.netty4.io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
>  [flink-shaded-netty-4.1.49.Final-12.0.jar:?]
>       at java.lang.Thread.run(Thread.java:748) [?:1.8.0_282]
> 21:47:36,662 [                main] ERROR 
> org.apache.flink.queryablestate.network.ClientTest           [] - 
> --------------------------------------------------------------------------------
> Test testSimpleRequests(org.apache.flink.queryablestate.network.ClientTest) 
> failed with:
> java.lang.AssertionError: Receive timed out
>       at org.junit.Assert.fail(Assert.java:88)
>       at org.junit.Assert.assertTrue(Assert.java:41)
>       at org.junit.Assert.assertNotNull(Assert.java:712)
>       at 
> org.apache.flink.queryablestate.network.ClientTest.testSimpleRequests(ClientTest.java:177)
>       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:50)
>       at 
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
>       at 
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
>       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.apache.flink.util.TestNameProvider$1.evaluate(TestNameProvider.java:45)
>       at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55)
>       at org.junit.rules.RunRules.evaluate(RunRules.java:20)
>       at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
>       at 
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
>       at 
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
>       at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
>       at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
>       at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
>       at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
>       at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
>       at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
>       at 
> org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:365)
>       at 
> org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:273)
>       at 
> org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:238)
>       at 
> org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:159)
>       at 
> org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:384)
>       at 
> org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:345)
>       at 
> org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:126)
>       at 
> org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:418)
> {code}



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