Till Rohrmann created FLINK-2697:
------------------------------------
Summary: Deadlock in StreamDiscretizer
Key: FLINK-2697
URL: https://issues.apache.org/jira/browse/FLINK-2697
Project: Flink
Issue Type: Bug
Components: Streaming
Reporter: Till Rohrmann
Encountered a deadlock in the {{StreamDiscretizer}}
{code}
Found one Java-level deadlock:
=============================
"Thread-11":
waiting to lock monitor 0x00007f9d081e1ab8 (object 0x00000000ff6b4590, a
org.apache.flink.streaming.api.operators.windowing.StreamDiscretizer),
which is held by "StreamDiscretizer -> TumblingGroupedPreReducer -> (Filter,
ExtractParts) (3/4)"
"StreamDiscretizer -> TumblingGroupedPreReducer -> (Filter, ExtractParts)
(3/4)":
waiting to lock monitor 0x00007f9d081e20e8 (object 0x00000000ff75fd88, a
org.apache.flink.streaming.api.windowing.policy.TimeTriggerPolicy),
which is held by "Thread-11"
Java stack information for the threads listed above:
===================================================
"Thread-11":
at
org.apache.flink.streaming.api.operators.windowing.StreamDiscretizer.triggerOnFakeElement(StreamDiscretizer.java:121)
- waiting to lock <0x00000000ff6b4590> (a
org.apache.flink.streaming.api.operators.windowing.StreamDiscretizer)
at
org.apache.flink.streaming.api.operators.windowing.StreamDiscretizer$WindowingCallback.sendFakeElement(StreamDiscretizer.java:203)
at
org.apache.flink.streaming.api.windowing.policy.TimeTriggerPolicy.activeFakeElementEmission(TimeTriggerPolicy.java:117)
- locked <0x00000000ff75fd88> (a
org.apache.flink.streaming.api.windowing.policy.TimeTriggerPolicy)
at
org.apache.flink.streaming.api.windowing.policy.TimeTriggerPolicy$TimeCheck.run(TimeTriggerPolicy.java:144)
at java.lang.Thread.run(Thread.java:745)
"StreamDiscretizer -> TumblingGroupedPreReducer -> (Filter, ExtractParts)
(3/4)":
at
org.apache.flink.streaming.api.windowing.policy.TimeTriggerPolicy.preNotifyTrigger(TimeTriggerPolicy.java:74)
- waiting to lock <0x00000000ff75fd88> (a
org.apache.flink.streaming.api.windowing.policy.TimeTriggerPolicy)
at
org.apache.flink.streaming.api.operators.windowing.StreamDiscretizer.processRealElement(StreamDiscretizer.java:91)
- locked <0x00000000ff6b4590> (a
org.apache.flink.streaming.api.operators.windowing.StreamDiscretizer)
at
org.apache.flink.streaming.api.operators.windowing.StreamDiscretizer.processElement(StreamDiscretizer.java:73)
at
org.apache.flink.streaming.runtime.io.StreamInputProcessor.processInput(StreamInputProcessor.java:162)
at
org.apache.flink.streaming.runtime.tasks.OneInputStreamTask.run(OneInputStreamTask.java:56)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:171)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:581)
at java.lang.Thread.run(Thread.java:745)
Found 1 deadlock.
{code}
https://s3.amazonaws.com/archive.travis-ci.org/jobs/80770719/log.txt
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