Github user rmetzger commented on the pull request:
https://github.com/apache/incubator-flink/pull/15#issuecomment-46086997
Cool. Good catch.
I think we have already a JSON parser in the Maven dependencies
("jackson-core-asl"), can you add a test case for the `PlanJSONDumpGenerator`
that verifies that the JSON is valid (without parse errors).
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