HIVE-29287: Iceberg: Variant Shredding support #6152
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
deniskuzZ
changed the title
|
same thing as apache/iceberg#14297 |
deniskuzZ
changed the title
deniskuzZ
commented
Oct 31, 2025
| TableScan | ||
| alias: tbl_shredded_variant | ||
| filterExpr: (UDFToDouble(variant_get(data, '$.age')) > 25.0D) (type: boolean) | ||
| Statistics: Num rows: 3 Data size: 1020 Basic stats: COMPLETE Column stats: NONE |
There was a problem hiding this comment.
PPD is not supported here, would be addressed in a separate JIRA
asf-ci-hive
added
tests passed
tests pending
tests unstable
and removed
tests pending
tests passed
tests unstable
labels
|
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
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Outdated suggestions cannot be applied.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.
What changes were proposed in this pull request?
Support for variant shredding, enabling Hive to write shredded variant data into Iceberg tables.
Ideally, this should follow the approach described in the reader/writer API proposal for Iceberg V4, where an execution engine provides the shredded writer schema.
As an interim solution, this PR introduces a writer that infers the shredded schema from the sample record captured before the Parquet writer is initialized.
Why are the changes needed?
Enables data skipping (predicate pushdown)
Does this PR introduce any user-facing change?
No
How was this patch tested?
variant_type_shredding.q