Github user mxm commented on the pull request:
https://github.com/apache/flink/pull/1125#issuecomment-140029554
That's why the pull request has the check for obsolete keys which fails to
start Flink when old config entries are detected. In addition, it has sanity
checks to check whether managed memory size < heap+offheap memory size. To make
things clearer, we could use taskmanager.jvm.size (although the actual size
depends on many other things).
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