[jira] [Created] (ARROW-761) [Python] Add functions that compute the total size of tensor and record batch payloads, including metadata

[Wes McKinney (JIRA)]

Wes McKinney created ARROW-761:
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             Summary: [Python] Add functions that compute the total size of 
tensor and record batch payloads, including metadata
                 Key: ARROW-761
                 URL: https://issues.apache.org/jira/browse/ARROW-761
             Project: Apache Arrow
          Issue Type: Improvement
          Components: Python
            Reporter: Wes McKinney


This will be useful for ensuring that memory maps have enough space available 
to write out a data structure

cc [~pcmoritz] [~robertnishihara]



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