Github user rmetzger commented on the pull request:
https://github.com/apache/flink/pull/1433#issuecomment-162334401
Tested the change on a cluster with a job reading some 100GBs of data ...
looks good ..
```
19:07:19,537 INFO org.apache.flink.runtime.taskmanager.TaskManager
- Using 0.7 of the currently free heap space for Flink managed heap memory
(9001 MB).
19:07:19,538 INFO org.apache.flink.runtime.taskmanager.TaskManager
- MemoryManager will be initialized with lazy memory allocation.
```
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