Hi Lucas, Any reason why you can't use JdbcIO? You almost certainly should *not* use BoundedSource, nor Splittable DoFn for this. BoundedSource is obsolete in favor of assembling your connector from regular transforms and/or using an SDF, and SDF is an extremely advanced feature whose primary audience is Beam SDK authors.
On Fri, Sep 27, 2019 at 2:52 PM Lucas Magalhães < [email protected]> wrote: > Hi guys. > > I'm new on apache Beam and o would like some help to undestand some > behaviours. > > 1. Is there some performance issue when i'm reading data from a relational > database using a ParDo instead of BoundedSource? > > 2. If I'm going to implement a BoundedSource how does Beam manage the > connection? I need to open and close in every method, like split, read, > estimete size and so on?? > > 3. I read something about splittable dofn but i didnt fine instructions > about to How implement. Has anyone have something about ir? > > Thanks > > > >
