Closed
Conversation
Exposes the truncated_rows parameter from Rust DataFusion to Python bindings. This enables reading CSV files with inconsistent column counts by creating a union schema and filling missing columns with nulls. The parameter was added to DataFusion Rust in PR apache/datafusion#17553 and is now available in datafusion 51.0.0. Changes: - Add truncated_rows parameter to SessionContext.register_csv() - Add truncated_rows parameter to SessionContext.read_csv() - Add comprehensive tests for both methods - Update docstrings with parameter documentation Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
The tests now only verify that the truncated_rows parameter is accepted by the Python bindings, not the actual behavior. Behavior testing is an upstream DataFusion concern (apache/datafusion#17553). This follows the principle that Python bindings should expose all Rust API parameters regardless of upstream implementation status.
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
Draft PR to test CI before submitting upstream