And please set akka.log.lifecycle.events: true to let Akka log also its
lifecycle events.
On Thu, Oct 15, 2015 at 12:12 PM, Robert Metzger <rmetz...@apache.org>
wrote:
> Can you start flink with logging level DEBUG ?
> Then we can see from the TaskManager logs when the TM became inactive.
> Maybe an Akka message is causing the actor to block?
>
> You can also monitor the GC from the TaskManager view in the web interface
> (for example by looking at the total time spend for GCing).
>
> On Thu, Oct 15, 2015 at 12:09 PM, Stephan Ewen <se...@apache.org> wrote:
>
> > Does not quite sound like GC is an issue.
> >
> > Hmmm, what else can make the failure detector kick in unexpectedly?
> >
> > On Thu, Oct 15, 2015 at 12:05 PM, Till Rohrmann <trohrm...@apache.org>
> > wrote:
> >
> > > To verify wether GC is a problem you can enable logging of memory usage
> > of
> > > the JVM via taskmanager.debug.memory.startLogThread: true. The interval
> > of
> > > the logging is configured via taskmanager.debug.memory.logIntervalMs.
> > >
> > >
> > > On Thu, Oct 15, 2015 at 12:00 PM, Matthias J. Sax <mj...@apache.org>
> > > wrote:
> > >
> > > > 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 <
> mj...@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" <mj...@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)
> > > > >>>>>
> > > > >>>>>
> > > > >>>>
> > > > >>>
> > > > >>
> > > > >>
> > > > >
> > > >
> > > >
> > >
> >
>
