Matthias Pohl created FLINK-30621: ------------------------------------- Summary: Violation of main thread constraint detected Key: FLINK-30621 URL: https://issues.apache.org/jira/browse/FLINK-30621 Project: Flink Issue Type: Bug Components: Runtime / Coordination Affects Versions: 1.17.0 Reporter: Matthias Pohl
When looking into FLINK-30540, I noticed the following warning being logged not only in the context of {{DataSinkTaskTest}}: {code} 00:56:09,055 [ pool-263-thread-1] WARN org.apache.flink.runtime.rpc.MainThreadValidatorUtil [] - Violation of main thread constraint detected: expected <Thread[main,5,main]> but running in <Thread[pool-263-thread-1,5,main]>. java.lang.Exception: Violation of main thread constraint detected: expected <Thread[main,5,main]> but running in <Thread[pool-263-thread-1,5,main]>. at org.apache.flink.runtime.rpc.MainThreadValidatorUtil.isRunningInExpectedThread(MainThreadValidatorUtil.java:73) ~[flink-rpc-core-1.17-SNAPSHOT.jar:1.17-SNAPSHOT] at org.apache.flink.runtime.concurrent.ComponentMainThreadExecutorServiceAdapter.lambda$new$0(ComponentMainThreadExecutorServiceAdapter.java:56) ~[test-classes/:1.17-SNAPSHOT] at org.apache.flink.runtime.concurrent.ComponentMainThreadExecutorServiceAdapter.assertRunningInMainThread(ComponentMainThreadExecutorServiceAdapter.java:86) ~[test-classes/:1.17-SNAPSHOT] at org.apache.flink.runtime.jobmaster.slotpool.DeclarativeSlotPoolBridge.assertRunningInMainThread(DeclarativeSlotPoolBridge.java:446) ~[classes/:?] at org.apache.flink.runtime.jobmaster.slotpool.DeclarativeSlotPoolBridge.checkBatchSlotTimeout(DeclarativeSlotPoolBridge.java:464) ~[classes/:?] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_292] at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_292] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) [?:1.8.0_292] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) [?:1.8.0_292] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_292] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_292] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_292] {code} -- This message was sent by Atlassian Jira (v8.20.10#820010)