Improve estimation of row count from partition samples#17492
Closed
branimir-vujicic wants to merge 1 commit intoprestodb:masterfrom
axiomq:backport/Improve_estimation_of_row_count
Closed
Improve estimation of row count from partition samples#17492branimir-vujicic wants to merge 1 commit intoprestodb:masterfrom axiomq:backport/Improve_estimation_of_row_count
branimir-vujicic wants to merge 1 commit intoprestodb:masterfrom
axiomq:backport/Improve_estimation_of_row_count
Conversation
|
|
Reduce the possibility of estimation errors in averageRowsPerPartition and rowCount due to a couple of outliers by excluding the min and max rowCount values from the calculation of avg rows per partition. Cherry-pick of trinodb/trino#11333 Co-authored-by: Raunaq Morarka <raunaqmorarka@gmail.com>
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Cherry-pick of trinodb/trino#11333
Reduce the possibility of estimation errors in averageRowsPerPartition
and rowCount due to a couple of outliers by excluding the
min and max rowCount values from the calculation of
avg rows per partition.
Co-authored-by: Raunaq Morarka raunaqmorarka@gmail.com
Test plan - Added Unit test