timsaucer opened a new pull request, #1543:
URL: https://github.com/apache/datafusion-python/pull/1543
# Which issue does this PR close?
Closes #1517
# Rationale for this change
One model for distributing `datafusion-python` work is by breaking apart a
query at the expression level and getting results for individual portions in
different workers. This currently does not work because we cannot pickle
PyExpr. This PR adds support for that via the updated Python codecs that landed
in #1541
# What changes are included in this PR?
- Updates Scalar, Aggregate, and Window functions to support pickling
requirements
- Adds Codec work for doing the actual pickling
- Adds unit tests
- Updates documentation site to describe modes of distributed work
- Adds support to disable pickling for untrusted input
# Are there any user-facing changes?
This should be pure addition from the user's point of view.
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