Nico Kruber created FLINK-6293:
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Summary: Flakey JobManagerITCase
Key: FLINK-6293
URL: https://issues.apache.org/jira/browse/FLINK-6293
Project: Flink
Issue Type: Bug
Components: Job-Submission, Tests
Affects Versions: 1.3.0
Reporter: Nico Kruber
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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