[PR] test: add schema evolution time travel coverage [paimon-rust]

["liujiwen-up (via GitHub)" <gi...@apache.org>]

liujiwen-up opened a new pull request, #407:
URL: https://github.com/apache/paimon-rust/pull/407

   ### Purpose
   
   Linked issue: close #258
   
   Add stable time-travel coverage for schema evolution boundaries using tag-based versions, without relying on warehouse-global snapshot numbers.
   
   ### Brief change log
   
   - Add a Spark fixture for `time_travel_schema_evolution` with tags around add, rename, drop, and reorder schema changes.
   - Add core integration coverage using `scan.version` tag reads with the time-travel schema resolution path.
   - Add DataFusion SQL coverage using `VERSION AS OF 'tag_name'` with SELECT, WHERE, and ORDER BY.
   - Make Spark warehouse cleanup retry briefly to avoid Docker/overlay directory deletion races during reprovisioning.
   
   ### Tests
   
   - `python3 -m py_compile dev/spark/provision.py`: passed
   - `cargo fmt --check`: passed
   - `cargo test -p paimon-integration-tests --test read_tables time_travel_schema_evolution --no-run`: passed
   - `cargo test -p paimon-datafusion --test read_tables time_travel_schema_evolution --no-run`: passed
   - `make docker-up`: passed
   - `cargo test -p paimon-integration-tests --test read_tables time_travel_schema_evolution -- --nocapture`: passed
   - `cargo test -p paimon-datafusion --test read_tables time_travel_schema_evolution -- --nocapture`: passed
   - `git diff --check`: passed
   
   ### API and Format
   
   No API or storage format changes.
   
   ### Documentation
   
   No documentation update required; this is test fixture and coverage only.
   


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Re: [PR] test: add schema evolution time travel coverage [paimon-rust]

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

JingsongLi merged PR #407:
URL: https://github.com/apache/paimon-rust/pull/407


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