I don't think it influences performance. In most cases, IO is the bottleneck for flink jobs.
Best, Shengkai Alexey Sanko via user <[email protected]> 于2025年9月27日周六 00:28写道： > Hi, team. I need to write a UDF that extracts data from JSON using a > specific path with three different leaf fields for various queries. While > there is complex manipulation with values, that detail is not relevant here. > > For example: > {a: 1, b: {aa: 2, bb: 3, cc: 4}} > > I want to retrieve the value of aa in one query, bb in another, and so on. > Instead of creating three UDFs—extractAaFromMyJson, extractBbFromMyJson, > and extractCcFromMyJson—with hardcoded paths, I plan to create a single > function, extractFromMyJson, that has a hardcoded first path part and takes > the second part as an argument, leaveField. I would call it like this: > > extractFromMyJson(data, 'aa') > etc. > > Can using a constant as a UDF argument affect performance in any way? > > Thank you! > With best regards, Alexey. > > ——— > Alexey Sanko > Principle Data Engineer > Data Experience Enablement Team > He/His > > [image: PastedGraphic-1.png] > >
