[Python] Deprecate pyarrow serialization

[asfimport]

Per mailing list discussion

Reporter: Wes McKinney / @wesm
Assignee: Joris Van den Bossche / @jorisvandenbossche

Related issues:

• [Python] Write serialized object as a stream of encapsulated IPC messages (supercedes)

PRs and other links:

• GitHub Pull Request #8255

_{Note: This issue was originally created as ARROW-9518. Please see the migration documentation for further details.}

[asfimport]

Antoine Pitrou / @pitrou:
I widened the topic for this issue, since PyArrow serialization is being obsolete by pickle protocol 5; also, the main users of pyarrow.serialize (i.e. Ray) have stopped using it.

[asfimport]

Antoine Pitrou / @pitrou:
@jorisvandenbossche Would you like to take a look at this?

[asfimport]

Joris Van den Bossche / @jorisvandenbossche:
Yes, won't be for this week, but I can certainly do that for 2.0

[asfimport]

Joris Van den Bossche / @jorisvandenbossche:
I did a search for open issues related to pyarrow.serialization and labeled them, so an overview can be seen at https://issues.apache.org/jira/issues/?jql=labels%20%3D%20pyarrow-serialization

[asfimport]

Krisztian Szucs / @kszucs:
Issue resolved by pull request 8255
#8255