[Python] More efficient serialization of pandas Index types in custom serialization from ARROW-1784

[asfimport]

Reporter: Wes McKinney / @wesm

Related issues:

• [Python] Read and write pandas.DataFrame in pyarrow.serialize by decomposing the BlockManager rather than coercing to Arrow format (relates to)

_{Note: This issue was originally created as ARROW-1887. Please see the migration documentation for further details.}

[asfimport]

Antoine Pitrou / @pitrou:
PyArrow serialization is deprecated, closing as won't fix.