Re: realtion between operator and task

2016-03-16 Thread Till Rohrmann
> > > > *From:* ewenstep...@gmail.com [mailto:ewenstep...@gmail.com] *On Behalf > Of *Stephan Ewen > *Sent:* Monday, March 07, 2016 8:29 PM > *To:* user@flink.apache.org > *Subject:* Re: realtion between operator and task > > > > Hi! > > > > A "task&qu

RE: realtion between operator and task

2016-03-08 Thread Radu Tudoran
operator and task Hi! A "task" is something that is deployed as one unit to the TaskManager and runs in one thread. A task can have multiple "operators" chained together, usually one per user function, for example "Map -> Filter -> FlatMap -> AssignTimestamps -> .

Re: realtion between operator and task

2016-03-07 Thread Stephan Ewen
Hi! A "task" is something that is deployed as one unit to the TaskManager and runs in one thread. A task can have multiple "operators" chained together, usually one per user function, for example "Map -> Filter -> FlatMap -> AssignTimestamps -> ..." Stephan On Mon, Mar 7, 2016 at 7:36 PM, Radu

realtion between operator and task

2016-03-07 Thread Radu Tudoran
Hi, Can someone explain how and where a stream operator is mapped to a stream task. I am particularly interested in the way the stream outputs are created and attached to the operators. I saw that this happen in OperatorChain functions but I do not have the picture of the lifecycle of an stream