- Notifications
You must be signed in to change notification settings - Fork1k
Account for bulk decompression in columnar scan cost#9241
Draft
akuzm wants to merge 4 commits intotimescale:mainfrom
Draft
Account for bulk decompression in columnar scan cost#9241akuzm wants to merge 4 commits intotimescale:mainfrom
akuzm wants to merge 4 commits intotimescale:mainfrom
Conversation
Row-by-row decompression is about 10x slower, but it has lower startupcost. This should be reflected in the costs.For now it doesn't lead to a lot of changes, but eventually we will useit to prefer row-by-row plans for queries with small limits. This PRalso adds a test with such queries.
1 task
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 freeto join this conversation on GitHub. Already have an account?Sign in to comment
Labels
None yet
1 participant
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
Uh oh!
There was an error while loading.Please reload this page.
Row-by-row decompression is about 10x slower, but it has lower startup cost. This should be reflected in the costs.
For now it doesn't lead to a lot of changes, but eventually we will use it to prefer row-by-row plans for queries with small limits. This PR also adds a test with such queries.
Disable-check: force-changelog-file