Fix JSON reader panic for non-nullable zero-size FixedSizeList#9810
Merged
Jefffrey merged 2 commits intoApr 29, 2026
Merged
Conversation
Contributor
|
Oh my apologies, I think my initial report was wrong. I think it panicked because I had the field as non-nullable but provided null data. Looks like this fix might not be needed actually 🤔 |
Contributor
Author
|
Although the initial report was the expected behavior, it did help uncover a real bug: when a non-nullable |
Jefffrey
approved these changes
Apr 27, 2026
Contributor
|
Thanks @liamzwbao |
liamzwbao
deleted the
issue-9780-degenerate-non-nullable-fixed-size-list-decoder
branch
Rich-T-kid
pushed a commit
to Rich-T-kid/arrow-rs
that referenced
this pull request
Jun 2, 2026
…e#9810) # Which issue does this PR close? <!-- We generally require a GitHub issue to be filed for all bug fixes and enhancements and this helps us generate change logs for our releases. You can link an issue to this PR using the GitHub syntax. --> - Closes apache#9780. # Rationale for this change <!-- Why are you proposing this change? If this is already explained clearly in the issue then this section is not needed. Explaining clearly why changes are proposed helps reviewers understand your changes and offer better suggestions for fixes. --> # What changes are included in this PR? <!-- There is no need to duplicate the description in the issue here but it is sometimes worth providing a summary of the individual changes in this PR. --> Use `FixedSizeListArray::try_new_with_length` to avoid panic when decoding degenerate non-nullable `FixedSizeList` # Are these changes tested? <!-- We typically require tests for all PRs in order to: 1. Prevent the code from being accidentally broken by subsequent changes 2. Serve as another way to document the expected behavior of the code If tests are not included in your PR, please explain why (for example, are they covered by existing tests)? --> Yes # Are there any user-facing changes? <!-- If there are user-facing changes then we may require documentation to be updated before approving the PR. If there are any breaking changes to public APIs, please call them out. --> Bug fixed
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
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.
Which issue does this PR close?
Rationale for this change
What changes are included in this PR?
Use
FixedSizeListArray::try_new_with_lengthto avoid panic when decoding degenerate non-nullableFixedSizeListAre these changes tested?
Yes
Are there any user-facing changes?
Bug fixed