[Feature] Generating changelogs with Python writers for input changelog-producer

[junmuz]

Search before asking

• I searched in the issues and found nothing similar.

Motivation

Currently the Python write path never produces changelog files. CommitMessage has no changelog field, DataWriter writes only one file, and FileStoreCommit creates snapshots with changelog_manifest_list=None.

Solution

Implement INPUT mode only (double-write at flush time). FULL_COMPACTION and LOOKUP require compaction infrastructure that doesn't exist in Python at the moment.

Anything else?

No response

Are you willing to submit a PR?

• I'm willing to submit a PR!

[junmuz]

The PR for the above issue can be found here