Thanks a lot for your suggestion Aljoscha, it has helped me discovered the problem: I was using an Executor inside a RichFunction and I wasn't shutting down the executor. Now I call executor.shutdownNow() in RichFunction .close(), and the job stops when both the input and the loop are exhausted.
Greetings, Juan On Wed, Nov 23, 2016 at 2:19 AM, Aljoscha Krettek <aljos...@apache.org> wrote: > Ah, cancel() won't be called on the source if it is already stopped, I > think. Could you try boiling it down to the very basics, i.e. have just the > source and an iteration and check what happens. > > On Wed, 23 Nov 2016 at 05:08 Juan Rodríguez Hortalá < > juan.rodriguez.hort...@gmail.com> wrote: > >> Thanks for your answer Aljoscha, >> >> The source stops, when I comment all the transformed streams and just >> print the input, the program completes. But this is custom SourceFunction, >> could this be related to this? Maybe I should implement emitWatermark? I'm >> using ingestion time so I assumed this wasn't needed. >> >> Greetings, >> >> Juan >> >> On Mon, Nov 21, 2016 at 9:17 AM, Aljoscha Krettek <aljos...@apache.org> >> wrote: >> >> Might it be that your initial source never stops? A loop will only >> terminate if both the original source stops and the loop timeout is reached. >> >> On Mon, 21 Nov 2016 at 07:58 Juan Rodríguez Hortalá < >> juan.rodriguez.hort...@gmail.com> wrote: >> >> Hi, >> >> I wrote a proof of concept for a Java version of mapWithState with >> time-based state eviction https://github.com/juanrh/ >> flink-state-eviction/blob/a6bb0d4ca0908d2f4350209a4a41e3 >> 81e99c76c5/src/main/java/com/github/juanrh/streaming/ >> MapWithStateIterPoC.java. The idea is: >> >> - Convert an input KeyedStream with key K and value V into a KeyedStream >> of Either<V, K>, with the original values as Left. >> - Replace a ValueState<S> by a ValueState for a POJO that besides S it >> stores the timestamp of the last time that state was accessed. >> - Define a IterativeStream from the Either stream, and apply a >> transformation function that periorically sends "tombstone" events as Right >> events in the closeWith of the IterativeStream. When a tombstone is >> received, delete the state with clear if it the time since it was last >> accessed is bigger than a configured time to live. >> >> This seems to work so far, but there are some things that look weird to >> me: >> >> - The program never seems to stop, event though I Ihave defined the >> IterativeStream with https://ci.apache.org/projects/flink/flink-docs- >> master/api/java/org/apache/flink/streaming/api/ >> datastream/DataStream.html#iterate-long- . The value of seems to be >> ignored. I'm using a custom source function, but it seems like the method >> SourceFunction.cancel() it's not being called. >> >> - I'm getting several messages "WARN MetricGroup: Name collision: Group >> already contains a Metric with the name 'numRecordsOut'. Metric will not be >> reported. (null)". What does that mean? >> >> Thanks, >> >> Juan >> >> >>
