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https://issues.apache.org/jira/browse/FLINK-6293?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15976323#comment-15976323
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Stephan Ewen commented on FLINK-6293:
-------------------------------------

Another failed instance: 
https://s3.amazonaws.com/archive.travis-ci.org/jobs/223677152/log.txt

> Flakey JobManagerITCase
> -----------------------
>
>                 Key: FLINK-6293
>                 URL: https://issues.apache.org/jira/browse/FLINK-6293
>             Project: Flink
>          Issue Type: Bug
>          Components: JobManager, Tests
>    Affects Versions: 1.3.0
>            Reporter: Nico Kruber
>              Labels: test-stability
>
> Quite seldomly, {{JobManagerITCase}} seems to hang, e.g. see 
> https://api.travis-ci.org/jobs/220888193/log.txt?deansi=true 
> The maven watchdog kills the build due to not output being produced within 
> 300s and {{JobManagerITCase}} seems to hang in line 772, i.e.
> {code:title=JobManagerITCase lines 
> 770-772|language=java|linenumbers=true|firstline=770}
> // Trigger savepoint for non-existing job
> jobManager.tell(TriggerSavepoint(jobId, Option.apply("any")), testActor)
> val response = expectMsgType[TriggerSavepointFailure](deadline.timeLeft)
> {code}
> Although the (downloaded) logs do not quite allow a precise mapping to this 
> test case, it looks as if the following block may be related:
> {code}
> 09:34:47,684 INFO  org.apache.flink.runtime.minicluster.FlinkMiniCluster      
>    - Akka ask timeout set to 100s
> 09:34:47,777 INFO  org.apache.flink.runtime.minicluster.FlinkMiniCluster      
>    - Disabled queryable state server
> 09:34:47,777 INFO  org.apache.flink.runtime.minicluster.FlinkMiniCluster      
>    - Starting FlinkMiniCluster.
> 09:34:47,809 INFO  akka.event.slf4j.Slf4jLogger                               
>    - Slf4jLogger started
> 09:34:47,837 INFO  org.apache.flink.runtime.blob.BlobServer                   
>    - Created BLOB server storage directory 
> /tmp/blobStore-eab23d04-ea18-4dc5-b1df-fcf9fc295062
> 09:34:47,838 WARN  org.apache.flink.runtime.net.SSLUtils                      
>    - Not a SSL socket, will skip setting tls version and cipher suites.
> 09:34:47,839 INFO  org.apache.flink.runtime.blob.BlobServer                   
>    - Started BLOB server at 0.0.0.0:36745 - max concurrent requests: 50 - max 
> backlog: 1000
> 09:34:47,840 INFO  org.apache.flink.runtime.metrics.MetricRegistry            
>    - No metrics reporter configured, no metrics will be exposed/reported.
> 09:34:47,850 INFO  
> org.apache.flink.runtime.testingUtils.TestingMemoryArchivist  - Started 
> memory archivist akka://flink/user/archive_1
> 09:34:47,860 INFO  org.apache.flink.runtime.testutils.TestingResourceManager  
>    - Trying to associate with JobManager leader akka://flink/user/jobmanager_1
> 09:34:47,861 INFO  org.apache.flink.runtime.testingUtils.TestingJobManager    
>    - Starting JobManager at akka://flink/user/jobmanager_1.
> 09:34:47,862 WARN  org.apache.flink.runtime.testingUtils.TestingJobManager    
>    - Discard message 
> LeaderSessionMessage(00000000-0000-0000-0000-000000000000,TriggerSavepoint(6e813070338a23b0ff571646bca56521,Some(any)))
>  because there is currently no valid leader id known.
> 09:34:47,862 INFO  org.apache.flink.runtime.testingUtils.TestingJobManager    
>    - JobManager akka://flink/user/jobmanager_1 was granted leadership with 
> leader session ID Some(00000000-0000-0000-0000-000000000000).
> 09:34:47,867 INFO  org.apache.flink.runtime.testutils.TestingResourceManager  
>    - Resource Manager associating with leading JobManager 
> Actor[akka://flink/user/jobmanager_1#-652927556] - leader session 
> 00000000-0000-0000-0000-000000000000
> {code}
> If so, then this may be related to FLINK-6287 and may possibly even be a 
> duplicate.
> What is strange though is that the timeout for the expected message to arrive 
> is no more than 2m and thus the test should properly fail within 300s.



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