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From "Matthias J. Sax" <mj...@apache.org>
Subject Re: JobManager not reachable
Date Thu, 15 Oct 2015 10:00:44 GMT
The problem is reproducible (it happens on each run).

I doubt that GC is an issue here (at least from an UDF point of view),
because I read the file once and keep a String object for each line.
This objects are kept to the very end; the UDF does not release them
until it returns from "run()" method.

The file is also small (10K) so main memory consumption should be a
problem either.

Of course, the UDF emits on a very high rate and I am not sure if Flink
creates a lots of short living object (Streaming does not reuse object
yet...) such that GC might become an issue here?


-Matthias



On 10/15/2015 11:44 AM, Stephan Ewen wrote:
> From what the logs show, the TaskManager does not send pings any more for a
> long time and is then considered failed and the tasks running on that
> TaskManager are considered failed as well. So far, nothing unusual...
> 
> Question is, why is it considered failed? Is this a reproducible problem?
> Or a one time occurrence? Does the user code accumulate so many objects to
> put very heavy pressure on the GC?
> 
> Stephan
> 
> 
> On Wed, Oct 14, 2015 at 10:47 PM, Matthias J. Sax <mjsax@apache.org> wrote:
> 
>> One thing I forgot the add. I also have a Storm-WordCount job (build via
>> FlinkTopologyBuilder) that uses the same
>> "buffer-file-and-emit-over-and-over-again-pattern" in a spout. This job
>> run just fine and stops regularly after 5 minutes.
>>
>> -Matthias
>>
>>
>> On 10/14/2015 10:42 PM, Matthias J. Sax wrote:
>>> No. See log below.
>>>
>>> Btw: the job is not cleaned up properly. Some task remain in state
>>> "Canceling".
>>>
>>> The program I execute is "Streaming WordCount" example with my own
>>> source function. This custom source (see below), reads a local (small)
>>> file, bufferes each line in an internal buffer, and emits the buffered
>>> lines over and over again (for 5 minutes). (A copy of the file is
>>> located on every worker machine of course.) This is of course no common
>>> patttern; I just do this, because I have only a small file and want the
>>> job to run longer.
>>>
>>> As the job is running for multiple minutes until it fails, I assume that
>>> this uncommon pattern should actually not cauase any problem. I just
>>> report it, to make sure it is not the problem (hope you can confirm).
>>>
>>> -Matthias
>>>
>>>
>>>>      private static final class SimpleFileSource implements
>> ParallelSourceFunction<String> {
>>>>              private static final long serialVersionUID =
>> -5727198990308179551L;
>>>>
>>>>              volatile boolean running = true;
>>>>              @Override
>>>>              public void run(
>>>>
>> org.apache.flink.streaming.api.functions.source.SourceFunction.SourceContext<String>
>> ctx)
>>>>                                              throws Exception {
>>>>
>>>>                      BufferedReader reader = new BufferedReader(new
>> FileReader(
>>>>                                      "/data/mjsax/hamlet.txt"));
>>>>                      ArrayList<String> buffer = new ArrayList<String>();
>>>>                      int counter = 0;
>>>>                      String line;
>>>>
>>>>                      long start = System.nanoTime();
>>>>                      while (running && (line = reader.readLine())
!=
>> null) {
>>>>                              buffer.add(line);
>>>>                              ctx.collect(line);
>>>>                      }
>>>>                      reader.close();
>>>>
>>>>                      while (running && (System.nanoTime() - start)
< 5L
>> * 60 * 1000 * 1000 * 1000) {
>>>>                              ctx.collect(buffer.get(counter));
>>>>                              counter = ++counter % buffer.size();
>>>>                      }
>>>>              }
>>>>
>>>>              @Override
>>>>              public void cancel() {
>>>>                      running = false;
>>>>              }
>>>>      }
>>>
>>>
>>> JobManager log:
>>>
>>>> 22:19:16,618 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (2/28) (29bb077aa0772c0c42a21b782d496b7c)
>> switched from DEPLOYING to RUNNING
>>>> 22:22:52,082 WARN  akka.remote.RemoteWatcher
>>          - Detected unreachable: [akka.tcp://flink@192.168.127.32:32994]
>>>> 22:22:52,083 INFO  org.apache.flink.runtime.jobmanager.JobManager
>>           - Task manager akka.tcp://
>> flink@192.168.127.32:32994/user/taskmanager terminated.
>>>> 22:22:52,084 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (8/28) (b3fb63bdac8f446e8bbaa015f30abfdc)
>> switched from RUNNING to FAILED
>>>> 22:22:52,093 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (1/28) (e18d7fb12ea2b5b88dda07e79a6c62ba)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,096 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (2/28) (b5af8ba1031971c07b8655bdf62acdea)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,096 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (3/28) (47d0cbfb8472a50ac005305dfab91202)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,096 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (4/28) (39144b5a2aa58be4667bdc38c50602b5)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,096 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (5/28) (c6dcb3a5d755b162dbe13f32de406a1d)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,097 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (6/28) (09d9649f2e9c83dbbe3d1b253651f136)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,097 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (7/28) (f82fda5a32c0f96acda4185ade9e985f)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,097 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (9/28) (dc9d2905ae42980a25c8870a1d89c056)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,097 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (10/28) (2e9682428b32fca6fca787e1a6b71359)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,097 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (11/28) (bae79dd7f2b9346c7d168db8143c0bd4)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,098 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (12/28) (642c76fc78faafcb023bce9cec041e9d)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,098 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (13/28) (1cf21c3abc8f91f82b5fb6175181baeb)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,098 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (14/28) (97fe45f48434c568652a9f9cd885b2da)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,098 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (15/28) (b8833cdda3fc205865ef611d176b33ea)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,098 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (16/28) (157a107c35ac994503cca577389a4f80)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,099 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (17/28) (509d1dacb4448b741aaf170009a31364)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,099 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (18/28) (d6bce51dd6d00b6b2f7e59ffcc733242)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,099 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (19/28) (dc6931d39b054b761cfed7345d683c29)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,099 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (20/28) (0f288fa6cc5910235e32564c1740670f)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,099 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (21/28) (80b811c2787d34c67941686e3c2be74a)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,100 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (22/28) (c70d69252e7b3ff6a537a2b09180d818)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,100 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (23/28) (29154b2299dd080e041ca8a349d3b418)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,100 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (24/28) (f56827e4079567adb23406c44f765dcf)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,100 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (25/28) (cd6f30e3a69b02367a6ddd097f9fb825)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,100 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (26/28) (c4b3af71e26718513752595a6cbdcee5)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,101 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (27/28) (b152ab3209ca6c68c6f20213ccb48f40)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,101 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (28/28) (efcee09b90ca372bffa4d086ce0b104a)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,101 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (1/28) (b2189b3d40cb4fa24083ffefd43ffc4f)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,101 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (2/28) (29bb077aa0772c0c42a21b782d496b7c)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,101 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (3/28) (2eb046c3d88cb7e6deccb5ac9d3a3704)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,102 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (4/28) (63f6696e53f08dc420bb51a10a092531)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,102 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (5/28) (bd9c6fc6d89e64dd3bef9c21065dfc87)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,102 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (6/28) (b675c869f60552cc04c3842d297a2529)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,102 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (7/28) (3f56dfd2ff3fe595555be6a372bf7c7b)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,102 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (8/28) (94d29535cf2559e5fe6dc13b8a5e3f08)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,103 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (9/28) (5f99a88b2041719d202f20bbc5dd2ca6)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,103 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (10/28) (7c1a75ec9794ae9197ac3e64ecbd4ad8)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,103 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (11/28) (c110922406d6f58cd34c80abf1ace972)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,103 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (12/28) (2f991c806e12dd9715da532f35d3cd83)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,103 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (13/28) (4b59d9e7f5102f7a5d1c09e49ffca66e)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,104 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (14/28) (6b966d3247685983a73b439666fe315a)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,104 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (15/28) (b7f040b44a87db85c41b7f8e1808aecc)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,104 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (16/28) (1a42f51a278bef23c497da8d34a28e91)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,104 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (17/28) (b3d86978bc1bf04e2cab2700fb6975e0)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,104 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (18/28) (a44cb0a419524a0b7e04d476285b03c0)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,104 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (19/28) (0d2b87be2ec0eb7961c05a4cf7baf7a7)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,105 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (20/28) (ebd6220fc5d98912811c19aa9fe29e63)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,105 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (21/28) (6cd95e1bb7c22e310967eab4149fa93d)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,105 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (22/28) (ddc9b7f1c122e2d36632c8f8e886d35b)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,105 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (23/28) (0e3b8cc17d0169a12142532dd800f966)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,105 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (24/28) (4ac383b01d8c5a2d395612202d1f876c)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,106 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (25/28) (bf542fee30071b7cfa63bae514af6106)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,106 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (26/28) (e60b40069c1c82c44318e053eacfa7bd)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,106 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (27/28) (35d1ce78a6f61a75af41c7b6d9c403a9)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,106 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (28/28) (de58a786dbd2557dcc7c54bf2710525b)
>> switched from RUNNING to CANCELING
>>>> 22:22:52,107 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (16/28) (1a42f51a278bef23c497da8d34a28e91)
>> switched from CANCELING to FAILED
>>>> 22:22:52,107 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (28/28) (efcee09b90ca372bffa4d086ce0b104a)
>> switched from CANCELING to FAILED
>>>> 22:22:52,108 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (15/28) (b7f040b44a87db85c41b7f8e1808aecc)
>> switched from CANCELING to FAILED
>>>> 22:22:52,108 INFO  org.apache.flink.runtime.instance.InstanceManager
>>          - Unregistered task manager akka.tcp://
>> flink@192.168.127.32:32994/user/taskmanager. Number of registered task
>> managers 19. Number of available slots 228.
>>>> 22:22:52,109 INFO  org.apache.flink.runtime.jobmanager.JobManager
>>           - Status of job 11b9636948e49d96965051902b0aee1f (Streaming
>> WordCount) changed to FAILING.
>>>> java.lang.Exception: The slot in which the task was executed has been
>> released. Probably loss of TaskManager 8175fe04b5cad804b197fbd1f8e2a599 @
>> dbis32 - 12 slots - URL: akka.tcp://
>> flink@192.168.127.32:32994/user/taskmanager
>>>>         at
>> org.apache.flink.runtime.instance.SimpleSlot.releaseSlot(SimpleSlot.java:151)
>>>>         at
>> org.apache.flink.runtime.instance.SlotSharingGroupAssignment.releaseSharedSlot(SlotSharingGroupAssignment.java:547)
>>>>         at
>> org.apache.flink.runtime.instance.SharedSlot.releaseSlot(SharedSlot.java:119)
>>>>         at
>> org.apache.flink.runtime.instance.Instance.markDead(Instance.java:156)
>>>>         at
>> org.apache.flink.runtime.instance.InstanceManager.unregisterTaskManager(InstanceManager.java:215)
>>>>         at
>> org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1.applyOrElse(JobManager.scala:565)
>>>>         at
>> scala.runtime.AbstractPartialFunction$mcVL$sp.apply$mcVL$sp(AbstractPartialFunction.scala:33)
>>>>         at
>> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:33)
>>>>         at
>> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:25)
>>>>         at
>> org.apache.flink.runtime.LeaderSessionMessageFilter$$anonfun$receive$1.applyOrElse(LeaderSessionMessageFilter.scala:44)
>>>>         at
>> scala.runtime.AbstractPartialFunction$mcVL$sp.apply$mcVL$sp(AbstractPartialFunction.scala:33)
>>>>         at
>> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:33)
>>>>         at
>> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:25)
>>>>         at
>> org.apache.flink.runtime.LogMessages$$anon$1.apply(LogMessages.scala:33)
>>>>         at
>> org.apache.flink.runtime.LogMessages$$anon$1.apply(LogMessages.scala:28)
>>>>         at
>> scala.PartialFunction$class.applyOrElse(PartialFunction.scala:118)
>>>>         at
>> org.apache.flink.runtime.LogMessages$$anon$1.applyOrElse(LogMessages.scala:28)
>>>>         at akka.actor.Actor$class.aroundReceive(Actor.scala:465)
>>>>         at
>> org.apache.flink.runtime.jobmanager.JobManager.aroundReceive(JobManager.scala:103)
>>>>         at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516)
>>>>         at
>> akka.actor.dungeon.DeathWatch$class.receivedTerminated(DeathWatch.scala:46)
>>>>         at akka.actor.ActorCell.receivedTerminated(ActorCell.scala:369)
>>>>         at akka.actor.ActorCell.autoReceiveMessage(ActorCell.scala:501)
>>>>         at akka.actor.ActorCell.invoke(ActorCell.scala:486)
>>>>         at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:254)
>>>>         at akka.dispatch.Mailbox.run(Mailbox.scala:221)
>>>>         at akka.dispatch.Mailbox.exec(Mailbox.scala:231)
>>>>         at
>> scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
>>>>         at
>> scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
>>>>         at
>> scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
>>>>         at
>> scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
>>>> 22:22:52,132 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (15/28) (b8833cdda3fc205865ef611d176b33ea)
>> switched from CANCELING to CANCELED
>>>> 22:22:52,132 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (11/28) (bae79dd7f2b9346c7d168db8143c0bd4)
>> switched from CANCELING to CANCELED
>>>> 22:22:52,133 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (9/28) (dc9d2905ae42980a25c8870a1d89c056)
>> switched from CANCELING to CANCELED
>>>> 22:22:52,133 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (18/28) (d6bce51dd6d00b6b2f7e59ffcc733242)
>> switched from CANCELING to CANCELED
>>>> 22:22:52,134 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (6/28) (09d9649f2e9c83dbbe3d1b253651f136)
>> switched from CANCELING to CANCELED
>>>> 22:22:52,135 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (17/28) (509d1dacb4448b741aaf170009a31364)
>> switched from CANCELING to CANCELED
>>>> 22:22:52,135 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (26/28) (c4b3af71e26718513752595a6cbdcee5)
>> switched from CANCELING to CANCELED
>>>> 22:22:52,135 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (5/28) (c6dcb3a5d755b162dbe13f32de406a1d)
>> switched from CANCELING to CANCELED
>>>> 22:22:52,136 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (14/28) (97fe45f48434c568652a9f9cd885b2da)
>> switched from CANCELING to CANCELED
>>>> 22:22:52,136 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (25/28) (cd6f30e3a69b02367a6ddd097f9fb825)
>> switched from CANCELING to CANCELED
>>>> 22:22:52,137 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (13/28) (1cf21c3abc8f91f82b5fb6175181baeb)
>> switched from CANCELING to CANCELED
>>>> 22:22:52,137 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (10/28) (2e9682428b32fca6fca787e1a6b71359)
>> switched from CANCELING to CANCELED
>>>> 22:22:52,137 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (19/28) (dc6931d39b054b761cfed7345d683c29)
>> switched from CANCELING to CANCELED
>>>> 22:22:52,139 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (7/28) (f82fda5a32c0f96acda4185ade9e985f)
>> switched from CANCELING to CANCELED
>>>> 22:22:52,139 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (4/28) (39144b5a2aa58be4667bdc38c50602b5)
>> switched from CANCELING to CANCELED
>>>> 22:22:52,139 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (2/28) (b5af8ba1031971c07b8655bdf62acdea)
>> switched from CANCELING to CANCELED
>>>> 22:22:52,139 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (24/28) (f56827e4079567adb23406c44f765dcf)
>> switched from CANCELING to CANCELED
>>>> 22:22:52,140 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (22/28) (c70d69252e7b3ff6a537a2b09180d818)
>> switched from CANCELING to CANCELED
>>>> 22:22:52,140 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (3/28) (47d0cbfb8472a50ac005305dfab91202)
>> switched from CANCELING to CANCELED
>>>> 22:22:52,140 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (27/28) (b152ab3209ca6c68c6f20213ccb48f40)
>> switched from CANCELING to CANCELED
>>>> 22:22:52,141 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (23/28) (29154b2299dd080e041ca8a349d3b418)
>> switched from CANCELING to CANCELED
>>>> 22:22:52,141 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (20/28) (0f288fa6cc5910235e32564c1740670f)
>> switched from CANCELING to CANCELED
>>>> 22:22:52,142 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (12/28) (642c76fc78faafcb023bce9cec041e9d)
>> switched from CANCELING to CANCELED
>>>> 22:22:52,142 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (16/28) (157a107c35ac994503cca577389a4f80)
>> switched from CANCELING to CANCELED
>>>> 22:22:57,003 INFO  Remoting
>>           - Quarantined address [akka.tcp://flink@192.168.127.32:32994]
>> is still unreachable or has not been restarted. Keeping it quarantined.
>>>> 22:23:01,078 WARN  akka.remote.RemoteWatcher
>>          - Detected unreachable: [akka.tcp://flink@192.168.127.62:35242]
>>>> 22:23:01,079 INFO  org.apache.flink.runtime.jobmanager.JobManager
>>           - Task manager akka.tcp://
>> flink@192.168.127.62:35242/user/taskmanager terminated.
>>>> 22:23:01,079 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (1/28) (b2189b3d40cb4fa24083ffefd43ffc4f)
>> switched from CANCELING to FAILED
>>>> 22:23:01,081 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (21/28) (80b811c2787d34c67941686e3c2be74a)
>> switched from CANCELING to FAILED
>>>> 22:23:01,082 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Keyed
>> Aggregation -> Sink: Unnamed (2/28) (29bb077aa0772c0c42a21b782d496b7c)
>> switched from CANCELING to FAILED
>>>> 22:23:01,083 INFO
>> org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source:
>> Custom Source -> Flat Map (1/28) (e18d7fb12ea2b5b88dda07e79a6c62ba)
>> switched from CANCELING to FAILED
>>>> 22:23:01,084 INFO  org.apache.flink.runtime.instance.InstanceManager
>>          - Unregistered task manager akka.tcp://
>> flink@192.168.127.62:35242/user/taskmanager. Number of registered task
>> managers 18. Number of available slots 216.
>>>
>>>
>>>
>>>
>>> On 10/11/2015 11:54 PM, Stephan Ewen wrote:
>>>> Can you see is there is anything unusual in the JobManager logs?
>>>> Am 11.10.2015 18:56 schrieb "Matthias J. Sax" <mjsax@apache.org>:
>>>>
>>>>> Hi,
>>>>>
>>>>> I was just playing arround with Flink. After submitting my job, it runs
>>>>> for multiple minutes, until I get the following Exception in one if the
>>>>> TaskManager logs and the job fails.
>>>>>
>>>>> I have no clue what's going on...
>>>>>
>>>>> -Matthias
>>>>>
>>>>>
>>>>>> 18:43:23,567 WARN  akka.remote.RemoteWatcher
>>>>>          - Detected unreachable: [akka.tcp://flink@192.168.127.11:6123
>> ]
>>>>>> 18:43:23,864 WARN  akka.remote.ReliableDeliverySupervisor
>>>>>         - Association with remote system [akka.tcp://
>>>>> flink@192.168.127.11:6123] has failed, address is now gated for [5000]
>>>>> ms. Reason is: [Disassociated].
>>>>>> 18:43:23,866 INFO  org.apache.flink.runtime.taskmanager.TaskManager
>>>>>         - TaskManager akka://flink/user/taskmanager disconnects from
>>>>> JobManager akka.tcp://flink@192.168.127.11:6123/user/jobmanager:
>>>>> JobManager is no longer reachable
>>>>>> 18:43:23,867 INFO  org.apache.flink.runtime.taskmanager.TaskManager
>>>>>         - Cancelling all computations and discarding all cached data.
>>>>>> 18:43:23,870 INFO  org.apache.flink.runtime.taskmanager.Task
>>>>>          - Attempting to fail task externally Keyed Aggregation ->
>> Sink:
>>>>> Unnamed (1/28)
>>>>>> 18:43:23,870 INFO  org.apache.flink.runtime.taskmanager.Task
>>>>>          - Keyed Aggregation -> Sink: Unnamed (1/28) switched to FAILED
>>>>> with exception.
>>>>>> java.lang.Exception: TaskManager akka://flink/user/taskmanager
>>>>> disconnects from JobManager akka.tcp://
>>>>> flink@192.168.127.11:6123/user/jobmanager: JobManager is no longer
>>>>> reachable
>>>>>>         at
>>>>>
>> org.apache.flink.runtime.taskmanager.TaskManager.handleJobManagerDisconnect(TaskManager.scala:826)
>>>>>>         at
>>>>>
>> org.apache.flink.runtime.taskmanager.TaskManager$$anonfun$handleMessage$1.applyOrElse(TaskManager.scala:297)
>>>>>>         at
>>>>>
>> scala.runtime.AbstractPartialFunction$mcVL$sp.apply$mcVL$sp(AbstractPartialFunction.scala:33)
>>>>>>         at
>>>>>
>> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:33)
>>>>>>         at
>>>>>
>> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:25)
>>>>>>         at
>>>>>
>> org.apache.flink.runtime.LeaderSessionMessageFilter$$anonfun$receive$1.applyOrElse(LeaderSessionMessageFilter.scala:44)
>>>>>>         at
>>>>>
>> scala.runtime.AbstractPartialFunction$mcVL$sp.apply$mcVL$sp(AbstractPartialFunction.scala:33)
>>>>>>         at
>>>>>
>> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:33)
>>>>>>         at
>>>>>
>> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:25)
>>>>>>         at
>>>>>
>> org.apache.flink.runtime.LogMessages$$anon$1.apply(LogMessages.scala:33)
>>>>>>         at
>>>>>
>> org.apache.flink.runtime.LogMessages$$anon$1.apply(LogMessages.scala:28)
>>>>>>         at
>>>>> scala.PartialFunction$class.applyOrElse(PartialFunction.scala:118)
>>>>>>         at
>>>>>
>> org.apache.flink.runtime.LogMessages$$anon$1.applyOrElse(LogMessages.scala:28)
>>>>>>         at akka.actor.Actor$class.aroundReceive(Actor.scala:465)
>>>>>>         at
>>>>>
>> org.apache.flink.runtime.taskmanager.TaskManager.aroundReceive(TaskManager.scala:119)
>>>>>>         at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516)
>>>>>>         at
>>>>>
>> akka.actor.dungeon.DeathWatch$class.receivedTerminated(DeathWatch.scala:46)
>>>>>>         at
>> akka.actor.ActorCell.receivedTerminated(ActorCell.scala:369)
>>>>>>         at
>> akka.actor.ActorCell.autoReceiveMessage(ActorCell.scala:501)
>>>>>>         at akka.actor.ActorCell.invoke(ActorCell.scala:486)
>>>>>>         at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:254)
>>>>>>         at akka.dispatch.Mailbox.run(Mailbox.scala:221)
>>>>>>         at akka.dispatch.Mailbox.exec(Mailbox.scala:231)
>>>>>>         at
>>>>> scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
>>>>>>         at
>>>>>
>> scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
>>>>>>         at
>>>>>
>> scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
>>>>>>         at
>>>>>
>> scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
>>>>>> 18:43:23,879 INFO  org.apache.flink.runtime.taskmanager.Task
>>>>>          - Triggering cancellation of task code Keyed Aggregation ->
>> Sink:
>>>>> Unnamed (1/28) (4b1f979a60c30f84ee60553730a4e99a).
>>>>>> 18:43:23,880 INFO  org.apache.flink.runtime.taskmanager.Task
>>>>>          - Attempting to fail task externally Source: Custom Source ->
>> Flat
>>>>> Map (1/28)
>>>>>> 18:43:23,880 INFO  org.apache.flink.runtime.taskmanager.Task
>>>>>          - Source: Custom Source -> Flat Map (1/28) switched to FAILED
>> with
>>>>> exception.
>>>>>> java.lang.Exception: TaskManager akka://flink/user/taskmanager
>>>>> disconnects from JobManager akka.tcp://
>>>>> flink@192.168.127.11:6123/user/jobmanager: JobManager is no longer
>>>>> reachable
>>>>>>         at
>>>>>
>> org.apache.flink.runtime.taskmanager.TaskManager.handleJobManagerDisconnect(TaskManager.scala:826)
>>>>>>         at
>>>>>
>> org.apache.flink.runtime.taskmanager.TaskManager$$anonfun$handleMessage$1.applyOrElse(TaskManager.scala:297)
>>>>>>         at
>>>>>
>> scala.runtime.AbstractPartialFunction$mcVL$sp.apply$mcVL$sp(AbstractPartialFunction.scala:33)
>>>>>>         at
>>>>>
>> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:33)
>>>>>>         at
>>>>>
>> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:25)
>>>>>>         at
>>>>>
>> org.apache.flink.runtime.LeaderSessionMessageFilter$$anonfun$receive$1.applyOrElse(LeaderSessionMessageFilter.scala:44)
>>>>>>         at
>>>>>
>> scala.runtime.AbstractPartialFunction$mcVL$sp.apply$mcVL$sp(AbstractPartialFunction.scala:33)
>>>>>>         at
>>>>>
>> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:33)
>>>>>>         at
>>>>>
>> scala.runtime.AbstractPartialFunction$mcVL$sp.apply(AbstractPartialFunction.scala:25)
>>>>>>         at
>>>>>
>> org.apache.flink.runtime.LogMessages$$anon$1.apply(LogMessages.scala:33)
>>>>>>         at
>>>>>
>> org.apache.flink.runtime.LogMessages$$anon$1.apply(LogMessages.scala:28)
>>>>>>         at
>>>>> scala.PartialFunction$class.applyOrElse(PartialFunction.scala:118)
>>>>>>         at
>>>>>
>> org.apache.flink.runtime.LogMessages$$anon$1.applyOrElse(LogMessages.scala:28)
>>>>>>         at akka.actor.Actor$class.aroundReceive(Actor.scala:465)
>>>>>>         at
>>>>>
>> org.apache.flink.runtime.taskmanager.TaskManager.aroundReceive(TaskManager.scala:119)
>>>>>>         at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516)
>>>>>>         at
>>>>>
>> akka.actor.dungeon.DeathWatch$class.receivedTerminated(DeathWatch.scala:46)
>>>>>>         at
>> akka.actor.ActorCell.receivedTerminated(ActorCell.scala:369)
>>>>>>         at
>> akka.actor.ActorCell.autoReceiveMessage(ActorCell.scala:501)
>>>>>>         at akka.actor.ActorCell.invoke(ActorCell.scala:486)
>>>>>>         at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:254)
>>>>>>         at akka.dispatch.Mailbox.run(Mailbox.scala:221)
>>>>>>         at akka.dispatch.Mailbox.exec(Mailbox.scala:231)
>>>>>>         at
>>>>> scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
>>>>>>         at
>>>>>
>> scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
>>>>>>         at
>>>>>
>> scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
>>>>>>         at
>>>>>
>> scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
>>>>>
>>>>>
>>>>
>>>
>>
>>
> 


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