The previous email seems unable to display embedded images, let me put on the links.
> Hi, > > My team and I try to measure total time spent on our flink job and found > out that Flink takes 40ms ~ 100ms to proceed from one operator to another. > I wonder how can we reduce this transition time. > > Following DAG represents our job: > https://drive.google.com/open?id=1wNR8po-SooAfYtCxU3qUDm4-hm16tclV > > > and here is the screenshot of our log: > https://drive.google.com/open?id=14PTViZMkhagxeNjOb4R8u3BEr7Ym1xBi > > at 19:37:04.564, the job is leaving "Source: Custom Source -> Flat Map" > at 19:37:04.605, the job is entering "Co-Flat Map" > at 19:37:04.605, the job is leaving "Co-Flat Map" > at 19:37:04.705, the job is entering "Co-Flat Map -> ...." > at 19:37:04.708, the job is leaving "Co-Flat Map -> ..." > > both "Co-Flat Map" finishes merely instantly, while most of the execution > time is spent on the transition. Any idea? > > > This is a UTF-8 formatted mail > ----------------------------------------------- > James C.-C.Yu > +886988713275 > +8615618429976 >
