Noctune opened a new pull request #6719: [FLINK-10375] Add wrapped exception as cause in ExceptionInChainedStubException URL: https://github.com/apache/flink/pull/6719 ## What is the purpose of the change ExceptionInChainedStubException does not have the wrapped exception as cause. This leads to generally bad exception traces like: ``` org.apache.beam.sdk.util.UserCodeException: org.apache.flink.runtime.operators.chaining.ExceptionInChainedStubException at org.apache.beam.sdk.util.UserCodeException.wrap(UserCodeException.java:36) at org.apache.beam.sdk.io.WriteFiles$ApplyShardingKeyFn$DoFnInvoker.invokeProcessElement(Unknown Source) at org.apache.beam.runners.core.SimpleDoFnRunner.invokeProcessElement(SimpleDoFnRunner.java:185) at org.apache.beam.runners.core.SimpleDoFnRunner.processElement(SimpleDoFnRunner.java:149) at org.apache.beam.runners.flink.metrics.DoFnRunnerWithMetricsUpdate.processElement(DoFnRunnerWithMetricsUpdate.java:66) at org.apache.beam.runners.flink.translation.functions.FlinkDoFnFunction.mapPartition(FlinkDoFnFunction.java:120) at org.apache.flink.runtime.operators.MapPartitionDriver.run(MapPartitionDriver.java:103) at org.apache.flink.runtime.operators.BatchTask.run(BatchTask.java:490) at org.apache.flink.runtime.operators.BatchTask.invoke(BatchTask.java:355) at org.apache.flink.runtime.taskmanager.Task.run(Task.java:718) at java.lang.Thread.run(Thread.java:748) Caused by: org.apache.flink.runtime.operators.chaining.ExceptionInChainedStubException at org.apache.flink.runtime.operators.chaining.ChainedFlatMapDriver.collect(ChainedFlatMapDriver.java:82) at org.apache.flink.runtime.operators.util.metrics.CountingCollector.collect(CountingCollector.java:35) at org.apache.beam.runners.flink.translation.functions.FlinkDoFnFunction$DoFnOutputManager.output(FlinkDoFnFunction.java:149) at org.apache.beam.runners.core.SimpleDoFnRunner.outputWindowedValue(SimpleDoFnRunner.java:219) at org.apache.beam.runners.core.SimpleDoFnRunner.access$700(SimpleDoFnRunner.java:69) at org.apache.beam.runners.core.SimpleDoFnRunner$DoFnProcessContext.output(SimpleDoFnRunner.java:517) at org.apache.beam.runners.core.SimpleDoFnRunner$DoFnProcessContext.output(SimpleDoFnRunner.java:505) at org.apache.beam.sdk.io.WriteFiles$ApplyShardingKeyFn.processElement(WriteFiles.java:686) ``` This pull request adds the wrapped exception as the cause of the base runtimeexception, so that it gets included when `toString` is called. ## Verifying this change This change is a trivial rework / code cleanup without any test coverage. ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): (no) - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (no) - The serializers: (no) - The runtime per-record code paths (performance sensitive): (no) - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (no) - The S3 file system connector: (no) ## Documentation - Does this pull request introduce a new feature? (no) - If yes, how is the feature documented? (not applicable)
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