[jira] [Created] (ARROW-823) [Python] Devise a means to serialize arrays of arbitrary Python objects in Arrow IPC messages

["Wes McKinney (JIRA)" <ji...@apache.org>]

Wes McKinney created ARROW-823:
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             Summary: [Python] Devise a means to serialize arrays of arbitrary Python objects in Arrow IPC messages
                 Key: ARROW-823
                 URL: https://issues.apache.org/jira/browse/ARROW-823
             Project: Apache Arrow
          Issue Type: New Feature
          Components: Python
            Reporter: Wes McKinney


Practically speaking, this would involve a "custom" logical type that is "pyobject", represented physically as an array of 64-bit pointers. On serialization, this would need to be converted to a BinaryArray containing pickled objects as binary values

At the moment, we don't yet have the machinery to deal with "custom" types where the in-memory representation is different from the on-wire representation. This would be a useful use case to work through the design issues

Interestingly, if done properly, this would enable other Arrow implementations to manipulate (filter, etc.) serialized Python objects as binary blobs. 



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