[
https://issues.apache.org/jira/browse/BEAM-11191?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Tobias Kaymak updated BEAM-11191:
---------------------------------
Description:
When running our Kafka-To-BigQuery pipeline with the Flink 1.11.2 or 1.10.2
Docker image,
the following exception is visible for the failing job on the job manager for
Beam 2.25.0:
2020-11-04 09:27:14
java.lang.RuntimeException: Failed to cleanup global state.
at
org.apache.beam.runners.flink.translation.wrappers.streaming.state.FlinkStateInternals.clearGlobalState(FlinkStateInternals.java:150)
at
org.apache.beam.runners.flink.translation.wrappers.streaming.DoFnOperator.maybeEmitWatermark(DoFnOperator.java:791)
at
org.apache.beam.runners.flink.translation.wrappers.streaming.DoFnOperator.processWatermark1(DoFnOperator.java:741)
at
org.apache.beam.runners.flink.translation.wrappers.streaming.DoFnOperator.processWatermark(DoFnOperator.java:713)
at
org.apache.flink.streaming.runtime.tasks.OneInputStreamTask$StreamTaskNetworkOutput.emitWatermark(OneInputStreamTask.java:167)
at
org.apache.flink.streaming.runtime.streamstatus.StatusWatermarkValve.findAndOutputNewMinWatermarkAcrossAlignedChannels(StatusWatermarkValve.java:179)
at
org.apache.flink.streaming.runtime.streamstatus.StatusWatermarkValve.inputWatermark(StatusWatermarkValve.java:101)
at
org.apache.flink.streaming.runtime.io.StreamTaskNetworkInput.processElement(StreamTaskNetworkInput.java:180)
at
org.apache.flink.streaming.runtime.io.StreamTaskNetworkInput.emitNext(StreamTaskNetworkInput.java:153)
at
org.apache.flink.streaming.runtime.io.StreamOneInputProcessor.processInput(StreamOneInputProcessor.java:67)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.processInput(StreamTask.java:351)
at
org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxStep(MailboxProcessor.java:191)
at
org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxLoop(MailboxProcessor.java:181)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.runMailboxLoop(StreamTask.java:566)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:536)
at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:721)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:546)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.ClassCastException: java.lang.String cannot be cast to
org.apache.flink.runtime.state.VoidNamespace
at
org.apache.flink.runtime.state.VoidNamespaceSerializer.serialize(VoidNamespaceSerializer.java:32)
at
org.apache.flink.contrib.streaming.state.RocksDBKeySerializationUtils.writeNameSpace(RocksDBKeySerializationUtils.java:77)
at
org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend.getKeys(RocksDBKeyedStateBackend.java:291)
at
org.apache.flink.runtime.state.AbstractKeyedStateBackend.applyToAllKeys(AbstractKeyedStateBackend.java:242)
at
org.apache.beam.runners.flink.translation.wrappers.streaming.state.FlinkStateInternals.clearGlobalState(FlinkStateInternals.java:141)
... 17 more
This is from the task manager's logs:
2020-11-04 08:46:31,250 WARN org.apache.flink.runtime.taskmanager.Task [] -
BigQueryIO.Write/BatchLoads/JobIdCreationRoot_LOAD/Read(CreateSource)/ParDo(BoundedSourceAsSDFWrapper)/ParMultiDo(BoundedSourceAsSDFWrapper)/ProcessKeyedElements/Splittable
ueryIO.Write/BatchLoads/CreateJobId_LOAD/ParMultiDo(Anonymous) ->
BigQueryIO.Write/BatchLoads/JobIdSideInput_LOAD/Combine.GloballyAsSingletonView/Combine.globally(Singleton)/WithKeys/AddKeys/Map/ParMultiDo(Anonymous)
-> ToKeyedWorkItem (1/1) (bebac6c581d1b8ece88007ec0
java.lang.RuntimeException: Failed to cleanup global state.
at
org.apache.beam.runners.flink.translation.wrappers.streaming.state.FlinkStateInternals.clearGlobalState(FlinkStateInternals.java:150)
~[blob_p-656af447c7120652ba6a8f48516776effc33dc07-8df5e6b00c52050981a9af655c97d0c9:?]
at
org.apache.beam.runners.flink.translation.wrappers.streaming.DoFnOperator.maybeEmitWatermark(DoFnOperator.java:791)
~[blob_p-656af447c7120652ba6a8f48516776effc33dc07-8df5e6b00c52050981a9af655c97d0c9:?]
at
org.apache.beam.runners.flink.translation.wrappers.streaming.DoFnOperator.processWatermark1(DoFnOperator.java:741)
~[blob_p-656af447c7120652ba6a8f48516776effc33dc07-8df5e6b00c52050981a9af655c97d0c9:?]
at
org.apache.beam.runners.flink.translation.wrappers.streaming.DoFnOperator.processWatermark(DoFnOperator.java:713)
~[blob_p-656af447c7120652ba6a8f48516776effc33dc07-8df5e6b00c52050981a9af655c97d0c9:?]
at
org.apache.flink.streaming.runtime.tasks.OneInputStreamTask$StreamTaskNetworkOutput.emitWatermark(OneInputStreamTask.java:167)
~[flink-dist_2.11-1.11.2.jar:1.11.2]
at
org.apache.flink.streaming.runtime.streamstatus.StatusWatermarkValve.findAndOutputNewMinWatermarkAcrossAlignedChannels(StatusWatermarkValve.java:179)
~[flink-dist_2.11-1.11.2.jar:1.11.2]
at
org.apache.flink.streaming.runtime.streamstatus.StatusWatermarkValve.inputWatermark(StatusWatermarkValve.java:101)
~[flink-dist_2.11-1.11.2.jar:1.11.2]
at
org.apache.flink.streaming.runtime.io.StreamTaskNetworkInput.processElement(StreamTaskNetworkInput.java:180)
~[flink-dist_2.11-1.11.2.jar:1.11.2]
at
org.apache.flink.streaming.runtime.io.StreamTaskNetworkInput.emitNext(StreamTaskNetworkInput.java:153)
~[flink-dist_2.11-1.11.2.jar:1.11.2]
at
org.apache.flink.streaming.runtime.io.StreamOneInputProcessor.processInput(StreamOneInputProcessor.java:67)
~[flink-dist_2.11-1.11.2.jar:1.11.2]
at
org.apache.flink.streaming.runtime.tasks.StreamTask.processInput(StreamTask.java:351)
~[flink-dist_2.11-1.11.2.jar:1.11.2]
at
org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxStep(MailboxProcessor.java:191)
~[flink-dist_2.11-1.11.2.jar:1.11.2]
at
org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxLoop(MailboxProcessor.java:181)
~[flink-dist_2.11-1.11.2.jar:1.11.2]
at
org.apache.flink.streaming.runtime.tasks.StreamTask.runMailboxLoop(StreamTask.java:566)
~[flink-dist_2.11-1.11.2.jar:1.11.2]
at
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:536)
~[flink-dist_2.11-1.11.2.jar:1.11.2]
at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:721)
[flink-dist_2.11-1.11.2.jar:1.11.2]
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:546)
[flink-dist_2.11-1.11.2.jar:1.11.2]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_265]
Caused by: java.lang.ClassCastException: java.lang.String cannot be cast to
org.apache.flink.runtime.state.VoidNamespace
at
org.apache.flink.runtime.state.VoidNamespaceSerializer.serialize(VoidNamespaceSerializer.java:32)
~[flink-dist_2.11-1.11.2.jar:1.11.2]
at
org.apache.flink.contrib.streaming.state.RocksDBKeySerializationUtils.writeNameSpace(RocksDBKeySerializationUtils.java:77)
~[flink-statebackend-rocksdb_2.11-1.11.2.jar:1.11.2]
at
org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend.getKeys(RocksDBKeyedStateBackend.java:291)
~[flink-statebackend-rocksdb_2.11-1.11.2.jar:1.11.2]
at
org.apache.flink.runtime.state.AbstractKeyedStateBackend.applyToAllKeys(AbstractKeyedStateBackend.java:242)
~[flink-dist_2.11-1.11.2.jar:1.11.2]
at
org.apache.beam.runners.flink.translation.wrappers.streaming.state.FlinkStateInternals.clearGlobalState(FlinkStateInternals.java:141)
~[blob_p-656af447c7120652ba6a8f48516776effc33dc07-8df5e6b00c52050981a9af655c97d0c9:?]
... 17 more
was:
When running our Kafka-To-BigQuery pipeline with the Flink 1.11.2 Docker image,
the following exception is visible for the failing job on the job manager:
2020-11-04 09:27:14
java.lang.RuntimeException: Failed to cleanup global state.
at
org.apache.beam.runners.flink.translation.wrappers.streaming.state.FlinkStateInternals.clearGlobalState(FlinkStateInternals.java:150)
at
org.apache.beam.runners.flink.translation.wrappers.streaming.DoFnOperator.maybeEmitWatermark(DoFnOperator.java:791)
at
org.apache.beam.runners.flink.translation.wrappers.streaming.DoFnOperator.processWatermark1(DoFnOperator.java:741)
at
org.apache.beam.runners.flink.translation.wrappers.streaming.DoFnOperator.processWatermark(DoFnOperator.java:713)
at
org.apache.flink.streaming.runtime.tasks.OneInputStreamTask$StreamTaskNetworkOutput.emitWatermark(OneInputStreamTask.java:167)
at
org.apache.flink.streaming.runtime.streamstatus.StatusWatermarkValve.findAndOutputNewMinWatermarkAcrossAlignedChannels(StatusWatermarkValve.java:179)
at
org.apache.flink.streaming.runtime.streamstatus.StatusWatermarkValve.inputWatermark(StatusWatermarkValve.java:101)
at
org.apache.flink.streaming.runtime.io.StreamTaskNetworkInput.processElement(StreamTaskNetworkInput.java:180)
at
org.apache.flink.streaming.runtime.io.StreamTaskNetworkInput.emitNext(StreamTaskNetworkInput.java:153)
at
org.apache.flink.streaming.runtime.io.StreamOneInputProcessor.processInput(StreamOneInputProcessor.java:67)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.processInput(StreamTask.java:351)
at
org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxStep(MailboxProcessor.java:191)
at
org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxLoop(MailboxProcessor.java:181)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.runMailboxLoop(StreamTask.java:566)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:536)
at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:721)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:546)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.ClassCastException: java.lang.String cannot be cast to
org.apache.flink.runtime.state.VoidNamespace
at
org.apache.flink.runtime.state.VoidNamespaceSerializer.serialize(VoidNamespaceSerializer.java:32)
at
org.apache.flink.contrib.streaming.state.RocksDBKeySerializationUtils.writeNameSpace(RocksDBKeySerializationUtils.java:77)
at
org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend.getKeys(RocksDBKeyedStateBackend.java:291)
at
org.apache.flink.runtime.state.AbstractKeyedStateBackend.applyToAllKeys(AbstractKeyedStateBackend.java:242)
at
org.apache.beam.runners.flink.translation.wrappers.streaming.state.FlinkStateInternals.clearGlobalState(FlinkStateInternals.java:141)
... 17 more
This is from the task manager's logs:
2020-11-04 08:46:31,250 WARN org.apache.flink.runtime.taskmanager.Task [] -
BigQueryIO.Write/BatchLoads/JobIdCreationRoot_LOAD/Read(CreateSource)/ParDo(BoundedSourceAsSDFWrapper)/ParMultiDo(BoundedSourceAsSDFWrapper)/ProcessKeyedElements/Splittable
ueryIO.Write/BatchLoads/CreateJobId_LOAD/ParMultiDo(Anonymous) ->
BigQueryIO.Write/BatchLoads/JobIdSideInput_LOAD/Combine.GloballyAsSingletonView/Combine.globally(Singleton)/WithKeys/AddKeys/Map/ParMultiDo(Anonymous)
-> ToKeyedWorkItem (1/1) (bebac6c581d1b8ece88007ec0
java.lang.RuntimeException: Failed to cleanup global state.
at
org.apache.beam.runners.flink.translation.wrappers.streaming.state.FlinkStateInternals.clearGlobalState(FlinkStateInternals.java:150)
~[blob_p-656af447c7120652ba6a8f48516776effc33dc07-8df5e6b00c52050981a9af655c97d0c9:?]
at
org.apache.beam.runners.flink.translation.wrappers.streaming.DoFnOperator.maybeEmitWatermark(DoFnOperator.java:791)
~[blob_p-656af447c7120652ba6a8f48516776effc33dc07-8df5e6b00c52050981a9af655c97d0c9:?]
at
org.apache.beam.runners.flink.translation.wrappers.streaming.DoFnOperator.processWatermark1(DoFnOperator.java:741)
~[blob_p-656af447c7120652ba6a8f48516776effc33dc07-8df5e6b00c52050981a9af655c97d0c9:?]
at
org.apache.beam.runners.flink.translation.wrappers.streaming.DoFnOperator.processWatermark(DoFnOperator.java:713)
~[blob_p-656af447c7120652ba6a8f48516776effc33dc07-8df5e6b00c52050981a9af655c97d0c9:?]
at
org.apache.flink.streaming.runtime.tasks.OneInputStreamTask$StreamTaskNetworkOutput.emitWatermark(OneInputStreamTask.java:167)
~[flink-dist_2.11-1.11.2.jar:1.11.2]
at
org.apache.flink.streaming.runtime.streamstatus.StatusWatermarkValve.findAndOutputNewMinWatermarkAcrossAlignedChannels(StatusWatermarkValve.java:179)
~[flink-dist_2.11-1.11.2.jar:1.11.2]
at
org.apache.flink.streaming.runtime.streamstatus.StatusWatermarkValve.inputWatermark(StatusWatermarkValve.java:101)
~[flink-dist_2.11-1.11.2.jar:1.11.2]
at
org.apache.flink.streaming.runtime.io.StreamTaskNetworkInput.processElement(StreamTaskNetworkInput.java:180)
~[flink-dist_2.11-1.11.2.jar:1.11.2]
at
org.apache.flink.streaming.runtime.io.StreamTaskNetworkInput.emitNext(StreamTaskNetworkInput.java:153)
~[flink-dist_2.11-1.11.2.jar:1.11.2]
at
org.apache.flink.streaming.runtime.io.StreamOneInputProcessor.processInput(StreamOneInputProcessor.java:67)
~[flink-dist_2.11-1.11.2.jar:1.11.2]
at
org.apache.flink.streaming.runtime.tasks.StreamTask.processInput(StreamTask.java:351)
~[flink-dist_2.11-1.11.2.jar:1.11.2]
at
org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxStep(MailboxProcessor.java:191)
~[flink-dist_2.11-1.11.2.jar:1.11.2]
at
org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxLoop(MailboxProcessor.java:181)
~[flink-dist_2.11-1.11.2.jar:1.11.2]
at
org.apache.flink.streaming.runtime.tasks.StreamTask.runMailboxLoop(StreamTask.java:566)
~[flink-dist_2.11-1.11.2.jar:1.11.2]
at
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:536)
~[flink-dist_2.11-1.11.2.jar:1.11.2]
at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:721)
[flink-dist_2.11-1.11.2.jar:1.11.2]
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:546)
[flink-dist_2.11-1.11.2.jar:1.11.2]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_265]
Caused by: java.lang.ClassCastException: java.lang.String cannot be cast to
org.apache.flink.runtime.state.VoidNamespace
at
org.apache.flink.runtime.state.VoidNamespaceSerializer.serialize(VoidNamespaceSerializer.java:32)
~[flink-dist_2.11-1.11.2.jar:1.11.2]
at
org.apache.flink.contrib.streaming.state.RocksDBKeySerializationUtils.writeNameSpace(RocksDBKeySerializationUtils.java:77)
~[flink-statebackend-rocksdb_2.11-1.11.2.jar:1.11.2]
at
org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend.getKeys(RocksDBKeyedStateBackend.java:291)
~[flink-statebackend-rocksdb_2.11-1.11.2.jar:1.11.2]
at
org.apache.flink.runtime.state.AbstractKeyedStateBackend.applyToAllKeys(AbstractKeyedStateBackend.java:242)
~[flink-dist_2.11-1.11.2.jar:1.11.2]
at
org.apache.beam.runners.flink.translation.wrappers.streaming.state.FlinkStateInternals.clearGlobalState(FlinkStateInternals.java:141)
~[blob_p-656af447c7120652ba6a8f48516776effc33dc07-8df5e6b00c52050981a9af655c97d0c9:?]
... 17 more
> clearGlobalState() method failing on Flink runner 1.10 and 1.11
> ---------------------------------------------------------------
>
> Key: BEAM-11191
> URL: https://issues.apache.org/jira/browse/BEAM-11191
> Project: Beam
> Issue Type: Bug
> Components: runner-flink
> Affects Versions: 2.25.0
> Reporter: Tobias Kaymak
> Priority: P0
>
> When running our Kafka-To-BigQuery pipeline with the Flink 1.11.2 or 1.10.2
> Docker image,
> the following exception is visible for the failing job on the job manager for
> Beam 2.25.0:
> 2020-11-04 09:27:14
> java.lang.RuntimeException: Failed to cleanup global state.
> at
> org.apache.beam.runners.flink.translation.wrappers.streaming.state.FlinkStateInternals.clearGlobalState(FlinkStateInternals.java:150)
> at
> org.apache.beam.runners.flink.translation.wrappers.streaming.DoFnOperator.maybeEmitWatermark(DoFnOperator.java:791)
> at
> org.apache.beam.runners.flink.translation.wrappers.streaming.DoFnOperator.processWatermark1(DoFnOperator.java:741)
> at
> org.apache.beam.runners.flink.translation.wrappers.streaming.DoFnOperator.processWatermark(DoFnOperator.java:713)
> at
> org.apache.flink.streaming.runtime.tasks.OneInputStreamTask$StreamTaskNetworkOutput.emitWatermark(OneInputStreamTask.java:167)
> at
> org.apache.flink.streaming.runtime.streamstatus.StatusWatermarkValve.findAndOutputNewMinWatermarkAcrossAlignedChannels(StatusWatermarkValve.java:179)
> at
> org.apache.flink.streaming.runtime.streamstatus.StatusWatermarkValve.inputWatermark(StatusWatermarkValve.java:101)
> at
> org.apache.flink.streaming.runtime.io.StreamTaskNetworkInput.processElement(StreamTaskNetworkInput.java:180)
> at
> org.apache.flink.streaming.runtime.io.StreamTaskNetworkInput.emitNext(StreamTaskNetworkInput.java:153)
> at
> org.apache.flink.streaming.runtime.io.StreamOneInputProcessor.processInput(StreamOneInputProcessor.java:67)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.processInput(StreamTask.java:351)
> at
> org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxStep(MailboxProcessor.java:191)
> at
> org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxLoop(MailboxProcessor.java:181)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.runMailboxLoop(StreamTask.java:566)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:536)
> at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:721)
> at org.apache.flink.runtime.taskmanager.Task.run(Task.java:546)
> at java.lang.Thread.run(Thread.java:748)
> Caused by: java.lang.ClassCastException: java.lang.String cannot be cast to
> org.apache.flink.runtime.state.VoidNamespace
> at
> org.apache.flink.runtime.state.VoidNamespaceSerializer.serialize(VoidNamespaceSerializer.java:32)
> at
> org.apache.flink.contrib.streaming.state.RocksDBKeySerializationUtils.writeNameSpace(RocksDBKeySerializationUtils.java:77)
> at
> org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend.getKeys(RocksDBKeyedStateBackend.java:291)
> at
> org.apache.flink.runtime.state.AbstractKeyedStateBackend.applyToAllKeys(AbstractKeyedStateBackend.java:242)
> at
> org.apache.beam.runners.flink.translation.wrappers.streaming.state.FlinkStateInternals.clearGlobalState(FlinkStateInternals.java:141)
> ... 17 more
> This is from the task manager's logs:
> 2020-11-04 08:46:31,250 WARN org.apache.flink.runtime.taskmanager.Task [] -
> BigQueryIO.Write/BatchLoads/JobIdCreationRoot_LOAD/Read(CreateSource)/ParDo(BoundedSourceAsSDFWrapper)/ParMultiDo(BoundedSourceAsSDFWrapper)/ProcessKeyedElements/Splittable
> ueryIO.Write/BatchLoads/CreateJobId_LOAD/ParMultiDo(Anonymous) ->
> BigQueryIO.Write/BatchLoads/JobIdSideInput_LOAD/Combine.GloballyAsSingletonView/Combine.globally(Singleton)/WithKeys/AddKeys/Map/ParMultiDo(Anonymous)
> -> ToKeyedWorkItem (1/1) (bebac6c581d1b8ece88007ec0
> java.lang.RuntimeException: Failed to cleanup global state.
> at
> org.apache.beam.runners.flink.translation.wrappers.streaming.state.FlinkStateInternals.clearGlobalState(FlinkStateInternals.java:150)
>
> ~[blob_p-656af447c7120652ba6a8f48516776effc33dc07-8df5e6b00c52050981a9af655c97d0c9:?]
> at
> org.apache.beam.runners.flink.translation.wrappers.streaming.DoFnOperator.maybeEmitWatermark(DoFnOperator.java:791)
>
> ~[blob_p-656af447c7120652ba6a8f48516776effc33dc07-8df5e6b00c52050981a9af655c97d0c9:?]
> at
> org.apache.beam.runners.flink.translation.wrappers.streaming.DoFnOperator.processWatermark1(DoFnOperator.java:741)
>
> ~[blob_p-656af447c7120652ba6a8f48516776effc33dc07-8df5e6b00c52050981a9af655c97d0c9:?]
> at
> org.apache.beam.runners.flink.translation.wrappers.streaming.DoFnOperator.processWatermark(DoFnOperator.java:713)
>
> ~[blob_p-656af447c7120652ba6a8f48516776effc33dc07-8df5e6b00c52050981a9af655c97d0c9:?]
> at
> org.apache.flink.streaming.runtime.tasks.OneInputStreamTask$StreamTaskNetworkOutput.emitWatermark(OneInputStreamTask.java:167)
> ~[flink-dist_2.11-1.11.2.jar:1.11.2]
> at
> org.apache.flink.streaming.runtime.streamstatus.StatusWatermarkValve.findAndOutputNewMinWatermarkAcrossAlignedChannels(StatusWatermarkValve.java:179)
> ~[flink-dist_2.11-1.11.2.jar:1.11.2]
> at
> org.apache.flink.streaming.runtime.streamstatus.StatusWatermarkValve.inputWatermark(StatusWatermarkValve.java:101)
> ~[flink-dist_2.11-1.11.2.jar:1.11.2]
> at
> org.apache.flink.streaming.runtime.io.StreamTaskNetworkInput.processElement(StreamTaskNetworkInput.java:180)
> ~[flink-dist_2.11-1.11.2.jar:1.11.2]
> at
> org.apache.flink.streaming.runtime.io.StreamTaskNetworkInput.emitNext(StreamTaskNetworkInput.java:153)
> ~[flink-dist_2.11-1.11.2.jar:1.11.2]
> at
> org.apache.flink.streaming.runtime.io.StreamOneInputProcessor.processInput(StreamOneInputProcessor.java:67)
> ~[flink-dist_2.11-1.11.2.jar:1.11.2]
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.processInput(StreamTask.java:351)
> ~[flink-dist_2.11-1.11.2.jar:1.11.2]
> at
> org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxStep(MailboxProcessor.java:191)
> ~[flink-dist_2.11-1.11.2.jar:1.11.2]
> at
> org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxLoop(MailboxProcessor.java:181)
> ~[flink-dist_2.11-1.11.2.jar:1.11.2]
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.runMailboxLoop(StreamTask.java:566)
> ~[flink-dist_2.11-1.11.2.jar:1.11.2]
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:536)
> ~[flink-dist_2.11-1.11.2.jar:1.11.2]
> at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:721)
> [flink-dist_2.11-1.11.2.jar:1.11.2]
> at org.apache.flink.runtime.taskmanager.Task.run(Task.java:546)
> [flink-dist_2.11-1.11.2.jar:1.11.2]
> at java.lang.Thread.run(Thread.java:748) [?:1.8.0_265]
> Caused by: java.lang.ClassCastException: java.lang.String cannot be cast to
> org.apache.flink.runtime.state.VoidNamespace
> at
> org.apache.flink.runtime.state.VoidNamespaceSerializer.serialize(VoidNamespaceSerializer.java:32)
> ~[flink-dist_2.11-1.11.2.jar:1.11.2]
> at
> org.apache.flink.contrib.streaming.state.RocksDBKeySerializationUtils.writeNameSpace(RocksDBKeySerializationUtils.java:77)
> ~[flink-statebackend-rocksdb_2.11-1.11.2.jar:1.11.2]
> at
> org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend.getKeys(RocksDBKeyedStateBackend.java:291)
> ~[flink-statebackend-rocksdb_2.11-1.11.2.jar:1.11.2]
> at
> org.apache.flink.runtime.state.AbstractKeyedStateBackend.applyToAllKeys(AbstractKeyedStateBackend.java:242)
> ~[flink-dist_2.11-1.11.2.jar:1.11.2]
> at
> org.apache.beam.runners.flink.translation.wrappers.streaming.state.FlinkStateInternals.clearGlobalState(FlinkStateInternals.java:141)
>
> ~[blob_p-656af447c7120652ba6a8f48516776effc33dc07-8df5e6b00c52050981a9af655c97d0c9:?]
> ... 17 more
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