Github user mxm commented on the pull request:
https://github.com/apache/flink/pull/1214#issuecomment-151224527
I took a look at this again because I wanted to merge it for 0.10. However,
I think it still needs a bit of work. The `ContextEnvironmentFactory` shouldn't
hold the state for detached batch and stream executions. Could you store the
batch plan in the `ContextEnvironment` and the stream graph in the
`StreamContextEnvironment` (non-static)? Please give them appropriate names.
Since the `ContextEnvironmentFactory` is currently the entry point for
batch and streaming execution (the streaming environment just checks whether
the `ContextEnvironment` is instantiated), you may set a flag in the factory to
prevent multiple executions.
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