Github user chiwanpark commented on the pull request:
https://github.com/apache/flink/pull/751#issuecomment-107287836
I was debugging with ConnectedComponents example and found the bug caused
by null memory segment. I tried adding a test case to test re-openable hash
table with small memory a moment ago. But I found another memory leakage not
related to null memory segment. (All memory segments are not null)
I think that more investigation is needed. I'll update this PR when I fix
the bug.
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