okumin opened a new pull request, #5409: URL: https://github.com/apache/hive/pull/5409
### What changes were proposed in this pull request? Enable Bucket Map Join using Bucket Transform of Apache Iceberg. ### Why are the changes needed? We know Bucket Map Join can significantly improve performance in some cases. This PR would unlock the capability to any Open Table Format. ### Does this PR introduce _any_ user-facing change? Yes. Execution plans would change if Iceberg users had bucketed tables. They can disable the optimization with `hive.convert.join.bucket.mapjoin.tez=false`. I expect non-Iceberg users not to see any changes. ### Is the change a dependency upgrade? No. ### How was this patch tested? I added multiple tests. ### Note This PR doesn't introduce Bucket Map Join using non-bucketing partitions. Also, we don't support the case with partition evolutions yet as you can see it in `iceberg_bucket_map_join_4.q`. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: gitbox-unsubscr...@hive.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: gitbox-unsubscr...@hive.apache.org For additional commands, e-mail: gitbox-h...@hive.apache.org
