jackylee-ch opened a new pull request, #792:
URL: https://github.com/apache/paimon-rust/pull/792

   `-0.0` and `+0.0` are separate dictionary keys — the sign bit survives
   serialization and the comparator orders them apart — but equality consults 
only the
   literal's own key. On a file holding `-0.0`, `WHERE d = 0.0` gets an empty 
candidate
   set, and that is `Some(empty)` rather than a decline, so every row is pruned 
before
   the residual filter runs. `In`, the array operators and the file-level 
min/max check
   share the flaw.
   
   **Not a parity fix**: Java's `BitmapIndexReader.equal` has the same gap. The 
argument
   is in-repo consistency — the local bitmap file index already unions the two 
zeros
   (`file_index::bitmap`'s `equivalent_zero`), pinned by a Java-golden test 
asserting
   `Eq(+0.0)` and `Eq(-0.0)` return the identical rows. Happy to file the Java 
issue if
   you would rather keep the two in step.
   


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