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Rossi Sun authored and GitHub committed 1df4889505b
GH-45135: [C++] Remove useless "hash table ready" states in swiss join (#45136) ### Rationale for this change See #45135 ### What changes are included in this PR? Remove the useless states. ### Are these changes tested? Existing tests suffice. ### Are there any user-facing changes? None. * GitHub Issue: #45135 Authored-by: Rossi Sun <zanmato1984@gmail.com> Signed-off-by: Rossi Sun <zanmato1984@gmail.com>