Avoid underestimating size of partitioned hive tables#17677
Merged
raunaqmorarka merged 2 commits intotrinodb:masterfrom Jun 6, 2023
Merged
Avoid underestimating size of partitioned hive tables#17677raunaqmorarka merged 2 commits intotrinodb:masterfrom
raunaqmorarka merged 2 commits intotrinodb:masterfrom
Conversation
8747df9 to
09324e0
Compare
2973348 to
1e0f15c
Compare
277a074 to
833d0c0
Compare
9d42851 to
18677a5
Compare
3e4069b to
b490f10
Compare
a073174 to
6a74e7c
Compare
2941ce6 to
76ebc5e
Compare
raunaqmorarka
approved these changes
Jun 6, 2023
Closed
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
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
Description
For not analyzed tables hive connector return
rowCountequal to0, which makes CBO to choose wrong execution plan, for example choosing broadcast join. This PR change 0 to NaN avoiding such situations.Additional context and related issues
Release notes
( ) This is not user-visible or docs only and no release notes are required.
( ) Release notes are required, please propose a release note for me.
(x) Release notes are required, with the following suggested text: