alxd112 opened a new issue, #30643: URL: https://github.com/apache/beam/issues/30643
### What happened? I am encountering race conditions that manifest as java.util.ConcurrentModificationException within the DataflowExecutionStateSampler class (Beam version 2.54.0). Below are relevant stack traces and some context. ### Stacktrace 1: ``` Error message from worker: java.util.ConcurrentModificationException java.base/java.util.HashMap.compute(HashMap.java:1317) org.apache.beam.runners.dataflow.worker.DataflowExecutionStateSampler.mergeStepStatsMaps(DataflowExecutionStateSampler.java:70) org.apache.beam.runners.dataflow.worker.DataflowExecutionStateSampler.getProcessingDistributionsForWorkId(DataflowExecutionStateSampler.java:125) org.apache.beam.runners.dataflow.worker.streaming.Work.addActiveLatencyBreakdownToBuilder(Work.java:173) org.apache.beam.runners.dataflow.worker.streaming.Work.getLatencyAttributions(Work.java:142) org.apache.beam.runners.dataflow.worker.StreamingDataflowWorker.process(StreamingDataflowWorker.java:1183) org.apache.beam.runners.dataflow.worker.StreamingDataflowWorker.lambda$scheduleWorkItem$5(StreamingDataflowWorker.java:881) org.apache.beam.runners.dataflow.worker.streaming.Work.run(Work.java:77) org.apache.beam.runners.dataflow.worker.util.BoundedQueueExecutor.lambda$executeLockHeld$0(BoundedQueueExecutor.java:183) java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) java.base/java.lang.Thread.run(Thread.java:833) ``` ### Stacktrace 2: ``` Error message from worker: java.util.ConcurrentModificationException java.base/java.util.HashMap$HashIterator.nextNode(HashMap.java:1597) java.base/java.util.HashMap$EntryIterator.next(HashMap.java:1630) java.base/java.util.HashMap$EntryIterator.next(HashMap.java:1628) org.apache.beam.runners.dataflow.worker.streaming.Work.addActiveLatencyBreakdownToBuilder(Work.java:174) org.apache.beam.runners.dataflow.worker.streaming.Work.getLatencyAttributions(Work.java:142) org.apache.beam.runners.dataflow.worker.StreamingDataflowWorker.process(StreamingDataflowWorker.java:1183) org.apache.beam.runners.dataflow.worker.StreamingDataflowWorker.lambda$scheduleWorkItem$5(StreamingDataflowWorker.java:881) org.apache.beam.runners.dataflow.worker.streaming.Work.run(Work.java:77) org.apache.beam.runners.dataflow.worker.util.BoundedQueueExecutor.lambda$executeLockHeld$0(BoundedQueueExecutor.java:183) java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) java.base/java.lang.Thread.run(Thread.java:833) ``` ### Environment: Apache Beam Version: 2.54.0 Pipeline Type: Streaming ### Issue Priority Priority: 2 (default / most bugs should be filed as P2) ### Issue Components - [ ] Component: Python SDK - [ ] Component: Java SDK - [ ] Component: Go SDK - [ ] Component: Typescript SDK - [ ] Component: IO connector - [ ] Component: Beam YAML - [ ] Component: Beam examples - [ ] Component: Beam playground - [ ] Component: Beam katas - [ ] Component: Website - [ ] Component: Spark Runner - [ ] Component: Flink Runner - [ ] Component: Samza Runner - [ ] Component: Twister2 Runner - [ ] Component: Hazelcast Jet Runner - [ ] Component: Google Cloud Dataflow Runner -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
