kerwin-zk opened a new pull request, #8022:
URL: https://github.com/apache/paimon/pull/8022
### Purpose
`PaimonDataSink` currently keeps the `FileStoreTable` and `WriteBuilder`
directly in the sink object. When Daft runs with the Ray runner, the sink needs
to be serialized and sent to workers. For OSS/Jindo tables, the table can
indirectly hold PyArrow/Jindo filesystem objects that are not picklable,
causing Ray serialization failures.
This PR makes the Daft Paimon write sink serializable by only storing
reconstructable table state during pickling.
### Tests
CI
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