90302309a3
### What changes were proposed in this pull request? This PR fixes the issue of complex query stages that contain sub stages not being reused at times due to dynamic plan changes. This PR synchronizes the "finished" flag between all reused stages so that the runtime replanning would always produce the same sub plan for their potentially reusable parent stages. ### Why are the changes needed? Without this change, complex query stages that contain sub stages will sometimes not be reused due to dynamic plan changes and the status of their child query stages not being synced. ### Does this PR introduce _any_ user-facing change? No. ### How was this patch tested? Manually tested TPC-DS q47 and q57. Before this PR, the reuse of the biggest stage would happen with a 50/50 chance; and after this PR, it will happen 100% of the time. Closes #28670 from maryannxue/fix-aqe-reuse. Authored-by: Maryann Xue <maryann.xue@gmail.com> Signed-off-by: Wenchen Fan <wenchen@databricks.com> |
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