[WIP][core][flink] supports count star pushdown for all-global-indexed filters.#7680
Open
steFaiz wants to merge 2 commits intoapache:masterfrom
Open
[WIP][core][flink] supports count star pushdown for all-global-indexed filters.#7680steFaiz wants to merge 2 commits intoapache:masterfrom
steFaiz wants to merge 2 commits intoapache:masterfrom
Conversation
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
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
Purpose
This introduce a PredicateVisitor to decide whether a Predicate is all covered by scalar index (e.g. btree now).
Then we can accelerate
count(*)queries on indexed columns without touching data files. This is useful in some AI situations. For example, before filtering high quality data, we might want to check the portion to decide the threshold.Tests
org.apache.paimon.globalindex.ScalarIndexedFieldsVisitorTestfor UnitTestorg.apache.paimon.flink.BatchFileStoreITCasefor ITCase