[jira] [Created] (FLINK-12189) Fix bugs and typos in memory management related classes

[Shang Yuanchun (Jira)]

Liya Fan created FLINK-12189:
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             Summary: Fix bugs and typos in memory management related classes
                 Key: FLINK-12189
                 URL: https://issues.apache.org/jira/browse/FLINK-12189
             Project: Flink
          Issue Type: Bug
          Components: Runtime / Operators
            Reporter: Liya Fan
            Assignee: Liya Fan


There are some bugs and typos in the memory related source code. For example,
 # In MemoryManager.release method, it should throw an NPE, if the input is null. But it does not. 
 # In HybridMemorySegment.put and get methods, the number of bytes read/written should be specified by the input parameter, rather than reading/writing until the end.
 # In HeapMemorySegment, the data member memory should be returned. This is because the member heapArray will not be reset to null after calling the release method.



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