P1 Description
TestFlattenDup seems to consistently fail on Dataflow with the following error:
Completed work item 5948790309795780733 UNSUCCESSFULLY: UNKNOWN: process bundle failed for instruction process_bundle-13 using plan process-bundle-descriptor-179 : while executing Process for Plan[process-bundle-descriptor-179]: 2: ParDo[passert.sumFn] Out:[] 1: DataSource[S[ptransform-178@localhost:12371], 0] Coder:W;coder-195<CoGBK;coder-196<int[varintz;c2];coder-197,int[varintz;c2];coder-199>>!GWC Out:2 caused by: passert.Sum(flat) = {21, size: 6}, want {27, size:9}