Zhipeng Zhang created FLINK-31909:
-------------------------------------
Summary: Using BroadcastUtils#withBroadcast in iteration perround
mode got stuck
Key: FLINK-31909
URL: https://issues.apache.org/jira/browse/FLINK-31909
Project: Flink
Issue Type: Bug
Components: Library / Machine Learning
Reporter: Zhipeng Zhang
Fix For: ml-2.3.0
Using BroadcastUtils#withBroadcastStream in iterations in per round mode could
possibly lead to stuck.
It seems that the there is a task waiting for the mail from the mailbox.
{code:java}
793 "tail-map-head-Parallel Collection Source (1/1)#0" #200 prio=5
os_prio=31 tid=0x00007faabb571800 nid=0x18c03 waiting on condition
[0x0000700013aae000]
793 java.lang.Thread.State: TIMED_WAITING (parking)
794 at sun.misc.Unsafe.park(Native Method)
795 - parking to wait for <0x0000000747805568> (a
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
796 at
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
797 at
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2163)
798 at
org.apache.flink.streaming.runtime.tasks.mailbox.TaskMailboxImpl.take(TaskMailboxImpl.java:149)
799 at
org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.processMailsWhenDefaultActionUnavailable(MailboxProcessor.java:335)
800 at
org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.processMail(MailboxProcessor.java:324)
801 at
org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxLoop(MailboxProcessor.java:201)
802 at
org.apache.flink.streaming.runtime.tasks.StreamTask.runMailboxLoop(StreamTask.java:804)
803 at
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:753)
804 at
org.apache.flink.runtime.taskmanager.Task$$Lambda$1430/1226027100.run(Unknown
Source)
805 at
org.apache.flink.runtime.taskmanager.Task.runWithSystemExitMonitoring(Task.java:948)
806 at
org.apache.flink.runtime.taskmanager.Task.restoreAndInvoke(Task.java:927)
807 at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:741)
808 at org.apache.flink.runtime.taskmanager.Task.run(Task.java:563)
809 at java.lang.Thread.run(Thread.java:748) {code}
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