Github user StephanEwen commented on the pull request:
https://github.com/apache/flink/pull/1378#issuecomment-157724392
The JSON plan generation has actually two points now (that we should try to
consolidate). The other one is on
"https://github.com/apache/flink/blob/6e0e67d2e0d5180d6fba492e8ab9cc8fb18fdf68/flink-runtime/src/main/java/org/apache/flink/runtime/jobgraph/jsonplan/JsonPlanGenerator.java";
and deals with attaching the JSON plan to every JobGraph so that the runtime
dashboard can draw a graph. That plan is a bit different then the optimizer
JSON (because it is not iteration aware and chained tasks are only one operator
any more), but otherwise follows similar logic.
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