jackylee-ch commented on PR #10173:
URL: https://github.com/apache/paimon/pull/10173#issuecomment-5967137652

   Thanks — fixed the signed-zero P1 in 7b2bf356d. `SingleFileWriter`'s 
cross-group min/max merge now orders floats with Java's typed comparison 
(`-0.0` < `+0.0`) instead of Python `min`/`max`, so a row-id update whose 
groups hold `-0.0` and `+0.0` publishes min=`-0.0` / max=`+0.0` regardless of 
group order. Non-float columns keep plain `min`/`max`; the NaN/ns omission flag 
is unchanged (single-group Arrow min/max was already correct — only the 
incremental merge was wrong).
   
   Added `test_row_id_update_file_merges_signed_zero_bounds`: a two-row-group 
row-id update under `truncate(3)`, both orders, asserting the sign bits of the 
published min/max. Reverting to Python `min`/`max` fails it (max comes back 
`-0.0`). flake8 and `git diff --check` clean.
   


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