[jira] [Created] (FLINK-20284) Error happens in TaskExecutor when closing JobMaster connection if there was a python UDF

[Shang Yuanchun (Jira)]

Zhu Zhu created FLINK-20284:
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             Summary: Error happens in TaskExecutor when closing JobMaster connection if there was a python UDF
                 Key: FLINK-20284
                 URL: https://issues.apache.org/jira/browse/FLINK-20284
             Project: Flink
          Issue Type: Bug
          Components: API / Python
    Affects Versions: 1.12.0
            Reporter: Zhu Zhu
             Fix For: 1.12.0


When a TaskExecutor successfully finished running a python UDF task and disconnecting from JobMaster, errors below will happen. This error, however, seems not affect job execution at the moment.

{code:java}
2020-11-20 17:05:21,932 INFO  org.apache.beam.runners.fnexecution.logging.GrpcLoggingService [] - 1 Beam Fn Logging clients still connected during shutdown.
2020-11-20 17:05:21,938 WARN  org.apache.beam.sdk.fn.data.BeamFnDataGrpcMultiplexer        [] - Hanged up for unknown endpoint.
2020-11-20 17:05:22,126 INFO  org.apache.flink.runtime.taskmanager.Task                    [] - Source: Custom Source -> select: (f0) -> select: (add_one(f0) AS a) -> to: Tuple2 -> Sink: Streaming select table sink (1/1)#0 (b0c2104dd8f87bb1caf0c83586c22a51) switched from RUNNING to FINISHED.
2020-11-20 17:05:22,126 INFO  org.apache.flink.runtime.taskmanager.Task                    [] - Freeing task resources for Source: Custom Source -> select: (f0) -> select: (add_one(f0) AS a) -> to: Tuple2 -> Sink: Streaming select table sink (1/1)#0 (b0c2104dd8f87bb1caf0c83586c22a51).
2020-11-20 17:05:22,128 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           [] - Un-registering task and sending final execution state FINISHED to JobManager for task Source: Custom Source -> select: (f0) -> select: (add_one(f0) AS a) -> to: Tuple2 -> Sink: Streaming select table sink (1/1)#0 b0c2104dd8f87bb1caf0c83586c22a51.
2020-11-20 17:05:22,156 INFO  org.apache.flink.runtime.taskexecutor.slot.TaskSlotTableImpl [] - Free slot TaskSlot(index:0, state:ACTIVE, resource profile: ResourceProfile{cpuCores=1.0000000000000000, taskHeapMemory=384.000mb (402653174 bytes), taskOffHeapMemory=0 bytes, managedMemory=512.000mb (536870920 bytes), networkMemory=128.000mb (134217730 bytes)}, allocationId: b67c3307dcf93757adfb4f0f9f7b8c7b, jobId: d05f32162f38ec3ec813c4621bc106d9).
2020-11-20 17:05:22,157 INFO  org.apache.flink.runtime.taskexecutor.DefaultJobLeaderService [] - Remove job d05f32162f38ec3ec813c4621bc106d9 from job leader monitoring.
2020-11-20 17:05:22,157 INFO  org.apache.flink.runtime.taskexecutor.TaskExecutor           [] - Close JobManager connection for job d05f32162f38ec3ec813c4621bc106d9.
2020-11-20 17:05:23,064 ERROR org.apache.beam.vendor.grpc.v1p26p0.io.netty.util.concurrent.DefaultPromise.rejectedExecution [] - Failed to submit a listener notification task. Event loop shut down?
java.lang.NoClassDefFoundError: org/apache/beam/vendor/grpc/v1p26p0/io/netty/util/concurrent/GlobalEventExecutor$2
        at org.apache.beam.vendor.grpc.v1p26p0.io.netty.util.concurrent.GlobalEventExecutor.startThread(GlobalEventExecutor.java:227) ~[blob_p-bd7a5d615512eb8a2e856e7c1630a0c22fca7cf3-ff27946fda7e2b8cb24ea56d505b689e:1.12-SNAPSHOT]
        at org.apache.beam.vendor.grpc.v1p26p0.io.netty.util.concurrent.GlobalEventExecutor.execute(GlobalEventExecutor.java:215) ~[blob_p-bd7a5d615512eb8a2e856e7c1630a0c22fca7cf3-ff27946fda7e2b8cb24ea56d505b689e:1.12-SNAPSHOT]
        at org.apache.beam.vendor.grpc.v1p26p0.io.netty.util.concurrent.DefaultPromise.safeExecute(DefaultPromise.java:841) [blob_p-bd7a5d615512eb8a2e856e7c1630a0c22fca7cf3-ff27946fda7e2b8cb24ea56d505b689e:1.12-SNAPSHOT]
        at org.apache.beam.vendor.grpc.v1p26p0.io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:498) [blob_p-bd7a5d615512eb8a2e856e7c1630a0c22fca7cf3-ff27946fda7e2b8cb24ea56d505b689e:1.12-SNAPSHOT]
        at org.apache.beam.vendor.grpc.v1p26p0.io.netty.util.concurrent.DefaultPromise.setValue0(DefaultPromise.java:615) [blob_p-bd7a5d615512eb8a2e856e7c1630a0c22fca7cf3-ff27946fda7e2b8cb24ea56d505b689e:1.12-SNAPSHOT]
        at org.apache.beam.vendor.grpc.v1p26p0.io.netty.util.concurrent.DefaultPromise.setSuccess0(DefaultPromise.java:604) [blob_p-bd7a5d615512eb8a2e856e7c1630a0c22fca7cf3-ff27946fda7e2b8cb24ea56d505b689e:1.12-SNAPSHOT]
        at org.apache.beam.vendor.grpc.v1p26p0.io.netty.util.concurrent.DefaultPromise.setSuccess(DefaultPromise.java:96) [blob_p-bd7a5d615512eb8a2e856e7c1630a0c22fca7cf3-ff27946fda7e2b8cb24ea56d505b689e:1.12-SNAPSHOT]
        at org.apache.beam.vendor.grpc.v1p26p0.io.netty.util.concurrent.SingleThreadEventExecutor$6.run(SingleThreadEventExecutor.java:1089) [blob_p-bd7a5d615512eb8a2e856e7c1630a0c22fca7cf3-ff27946fda7e2b8cb24ea56d505b689e:1.12-SNAPSHOT]
        at org.apache.beam.vendor.grpc.v1p26p0.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [blob_p-bd7a5d615512eb8a2e856e7c1630a0c22fca7cf3-ff27946fda7e2b8cb24ea56d505b689e:1.12-SNAPSHOT]
        at org.apache.beam.vendor.grpc.v1p26p0.io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) [blob_p-bd7a5d615512eb8a2e856e7c1630a0c22fca7cf3-ff27946fda7e2b8cb24ea56d505b689e:1.12-SNAPSHOT]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_261]
Caused by: java.lang.ClassNotFoundException: org.apache.beam.vendor.grpc.v1p26p0.io.netty.util.concurrent.GlobalEventExecutor$2
        at java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[?:1.8.0_261]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[?:1.8.0_261]
        at org.apache.flink.util.FlinkUserCodeClassLoader.loadClassWithoutExceptionHandling(FlinkUserCodeClassLoader.java:63) ~[flink-dist_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
        at org.apache.flink.util.ChildFirstClassLoader.loadClassWithoutExceptionHandling(ChildFirstClassLoader.java:72) ~[flink-dist_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
        at org.apache.flink.util.FlinkUserCodeClassLoader.loadClass(FlinkUserCodeClassLoader.java:49) ~[flink-dist_2.11-1.12-SNAPSHOT.jar:1.12-SNAPSHOT]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[?:1.8.0_261]
        ... 11 more
{code}




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