Robert Metzger created FLINK-4878:
-------------------------------------
Summary:
ReduceTaskExternalITCase.testMultiLevelMergeCombiningReduceTask test instable
Key: FLINK-4878
URL: https://issues.apache.org/jira/browse/FLINK-4878
Project: Flink
Issue Type: Bug
Components: Local Runtime
Affects Versions: 1.2.0
Reporter: Robert Metzger
The {{ReduceTaskExternalITCase.testMultiLevelMergeCombiningReduceTask}} test
failed with the following error
{code}
testMultiLevelMergeCombiningReduceTask[0](org.apache.flink.runtime.operators.ReduceTaskExternalITCase)
Time elapsed: 0.233 sec <<< FAILURE!
java.lang.AssertionError: Invoke method caused exception.
at org.junit.Assert.fail(Assert.java:88)
at
org.apache.flink.runtime.operators.ReduceTaskExternalITCase.testMultiLevelMergeCombiningReduceTask(ReduceTaskExternalITCase.java:193)
{code}
Here is the log
https://s3.amazonaws.com/archive.travis-ci.org/jobs/169181202/log.txt
Sadly, the test is not logging the exception at INFO level, so we can not
really understand what's going on.
I'll push a commit improving the logging.
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