[I] Copying a Python tuple shares mutable field storage [texera]

["carloea2 (via GitHub)" <gi...@apache.org>]

carloea2 opened a new issue, #8270:
URL: https://github.com/apache/texera/issues/8270

   ### What happened?
   
   Constructing a `Tuple` from another `Tuple` reuses the same internal ordered dictionary. Assigning a field on either tuple therefore changes the other tuple as well. An operator that creates and edits a derived tuple can silently mutate its input row.
   
   Before: copied tuples share field storage and leak assignments in both directions.
   
   Expected: a tuple copy starts with the same fields but has independent field mapping storage.
   
   ### How to reproduce?
   
   1. Create `original = Tuple({"x": 1})`.
   2. Create `copied = Tuple(original)`.
   3. Assign `copied["x"] = 2` and observe that `original["x"]` also becomes 2.
   
   ### Version or branch
   
   1.3.0-incubating-SNAPSHOT on main
   
   ### Commit hash
   
   50321e403c82df299a13deb50a7f9849dd93bdba
   
   ### Relevant log output
   
   original_x=2 derived_x=2 same_storage=True


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Re: [I] Copying a Python tuple shares mutable field storage [texera]

["carloea2 (via GitHub)" <gi...@apache.org>]

carloea2 commented on issue #8270:
URL: https://github.com/apache/texera/issues/8270#issuecomment-5548200274

   /take


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Re: [I] Copying a Python tuple shares mutable field storage [texera]

["github-actions[bot] (via GitHub)" <gi...@apache.org>]

github-actions[bot] commented on issue #8270:
URL: https://github.com/apache/texera/issues/8270#issuecomment-5474548191

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