Github user matadorhong commented on the pull request: https://github.com/apache/flink/pull/492#issuecomment-83649446 As in your comment in this PR, I think you make a small spelling mistake "Renames the package org.apache.flink.compiler to org.apache.fink.optimizer", which should be "org.apache.flink.optimizer". But the codes are all OK. HAHA.
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