liamzwbao commented on PR #9810:
URL: https://github.com/apache/arrow-rs/pull/9810#issuecomment-4322329712
Although the initial report was the expected behavior, it did help uncover a
real bug: when a non-nullable `FixedSizeList` has `size=0` and all inputs are
valid empty arrays, the decoder produces length 0 instead of the correct row
count. The new test reproduces this: 3 rows of `{"a": []}` should give `len=3`
but panics without the fix.
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