[SPARK] Set autoCompact.modifiedPartitionsOnly.enabled to false as default #4109
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
When True is the default, the behavior of AC doesn't align with the DBR implementation and results in too frequent compactions being run as minNumFiles isn't respected.
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Outdated suggestions cannot be applied.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.
When True is the default, the behavior of AC doesn't align with the DBR implementation and results in too frequent compactions being run as minNumFiles isn't respected.
Example of odd result of AC in this issue: #4045
and resolves the odd behavior noted here: #4043
Which Delta project/connector is this regarding?
Description
Aligns behavior of AC with Databricks DBR implementation where it appears this is not enabled (also not exposed as a config option).
How was this patch tested?
Ran 200 iterations of merging data into a table to confirm the expected behavior of AC in managing small files while respecting the minNumFiles threshold.
Does this PR introduce any user-facing changes?
No as this session config isn't documented in the Delta.io docs