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https://issues.apache.org/jira/browse/FLINK-6278?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrey updated FLINK-6278:
--------------------------
Attachment: threaddump.txt
> After "FATAL" message in logs taskmanager still working
> -------------------------------------------------------
>
> Key: FLINK-6278
> URL: https://issues.apache.org/jira/browse/FLINK-6278
> Project: Flink
> Issue Type: Bug
> Affects Versions: 1.2.0
> Reporter: Andrey
> Attachments: threaddump.txt
>
>
> Steps to reproduce:
> * create job which cause OOM. For example for each incoming message create
> byte array and store in memory:
> {code}
> }).flatMap(new RichFlatMapFunction<String, AggregatedHash>() {
> private List<byte[]> oomList = new ArrayList<>();
> @Override
> public void flatMap(String value, Collector<AggregatedHash> out)
> throws Exception {
> if (oomHost != null && oomHost.equals(host)) {
> //multiply speed towards oom
> oomList.add(new byte[100 * 1024]);
> }
> }
> }
> {code}
> * after some time task manager hangs
> * according to logs task manager will be disconnected from zookeeper (ha mode
> was configured) and job manager
> * then big log entry:
> {code}
> 2017-04-07 09:13:32,893 ERROR
> org.apache.flink.runtime.taskmanager.TaskManager -
> ==============================================================
> ====================== FATAL =======================
> ==============================================================
> A fatal error occurred, forcing the TaskManager to shut down: Task 'Flat Map
> -> Sink: Unnamed (2/2)' did not react to cancelling signal in the last 30
> seconds, but is stuck in method:
>
> org.apache.flink.streaming.runtime.io.StreamInputProcessor.processInput(StreamInputProcessor.java:182)
> org.apache.flink.streaming.runtime.tasks.OneInputStreamTask.run(OneInputStreamTask.java:63)
> org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:272)
> org.apache.flink.runtime.taskmanager.Task.run(Task.java:655)
> java.lang.Thread.run(Thread.java:745)
> {code}
> * TM still running.
> Thread dump attached.
> Expected:
> * shutdown task manager
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