[Backport release-2.20] Improve large dense aggregate reads with tile metadata only. #4662
Conversation
This file contains 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
![github-actions[bot]](https://avatars.githubusercontent.com/in/15368?s=60&v=4){kind=small}
The dense reader was creating a bitmap to compute all aggregate results at the top level of the read. For large aggregate reads where we don't need to load any tiles, this could be quite large. It also would turn out to be completely unnecessary. This fix moves the bitmap to the lower level of the read, where a smaller bitmap can be created only if necessary. --- TYPE: IMPROVEMENT DESC: Improve large dense aggregate reads with tile metadata only. (cherry picked from commit 598e84e)
KiterLuc
approved these changes
Jan 23, 2024
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
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Outdated suggestions cannot be applied.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.
Backport 598e84e from #4657.