GitHub user viirya opened a pull request: https://github.com/apache/spark/pull/8226
[SPARK-10031][SQL] Join two UnsafeRows in SortMergeJoin if possible JIRA: https://issues.apache.org/jira/browse/SPARK-10031 Currently in `SortMergeJoin`, when two rows from left and right plans are both `UnsafeRow`, we still use `JoinedRow` to join them and do an extra `UnsafeProjection` later. We can just use `GenerateUnsafeRowJoiner` to join two `UnsafeRows` in `SortMergeJoin` if possible. Besides, `GenerateUnsafeRowJoiner` can have a `withRight` function to only update row2 with a same row1. Add `withRight` function to `GenerateUnsafeRowJoiner`. We can avoid another unnecessary data copying for row1. You can merge this pull request into a Git repository by running: $ git pull https://github.com/viirya/spark-1 join-unsaferow-smj Alternatively you can review and apply these changes as the patch at: https://github.com/apache/spark/pull/8226.patch To close this pull request, make a commit to your master/trunk branch with (at least) the following in the commit message: This closes #8226 ---- commit f4ae0cef4c5a67700748176156eafa3478d45b55 Author: Liang-Chi Hsieh <vii...@appier.com> Date: 2015-08-15T18:39:45Z Join two UnsafeRows in SortMergeJoin if possible. Add withRight function to GenerateUnsafeRowJoiner. ---- --- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. --- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org