[I] [Bug][python] SplitRead redundantly reads schema from filesystem when current schema is already in memory [paimon]

["MgjLLL (via GitHub)" <gi...@apache.org>]

MgjLLL opened a new issue, #8216:
URL: https://github.com/apache/paimon/issues/8216

   ### Search before asking
   
   - [x] I searched in the [issues](https://github.com/apache/paimon/issues) and found nothing similar.
   
   
   ### Paimon version
   
   master (latest)
   
   ### Compute Engine
   
   PythonAPI
   
   ### Minimal reproduce step
   
   **Minimal reproduce step:**
   ```markdown
   1. Create a Paimon table and write data
   2. Use pypaimon to read data via `SplitRead`
   3. Observe that `schema_manager.get_schema()` is called even when `schema_id` matches the current table schema id
   4. This triggers redundant filesystem reads for schema files that are already available in memory
   
   ### What doesn't meet your expectations?
   
   When `schema_id == table.table_schema.id`, the Python read path should return the in-memory `table.table_schema` directly without filesystem access, matching the Java short-circuit pattern in `RawFileSplitRead.createFileReader()`.
   
   ### Anything else?
   
   This is a companion fix to `FileScanner._schema_fields` which had the same redundant read pattern. Both share the root cause: missing short-circuit for the current table schema id.
   
   ### Are you willing to submit a PR?
   
   - [x] I'm willing to submit a PR!


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Re: [I] [Bug][python] SplitRead redundantly reads schema from filesystem when current schema is already in memory [paimon]

["JingsongLi (via GitHub)" <gi...@apache.org>]

JingsongLi closed issue #8216: [Bug][python] SplitRead redundantly reads schema from filesystem when current schema is already in memory
URL: https://github.com/apache/paimon/issues/8216


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