parquet writer: Raise an error when the row_group_index overflows i16 #6378
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progval
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This caused confusing panics down the line because 'ordinal' is negative.
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Nice catch! |
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Which issue does this PR close?
Rationale for this change
This caused confusing panics down the line because 'ordinal' is negative.
This is easy to reach, because Parquet requires ordinals to be
i16, which only allows 32k row groups.What changes are included in this PR?
Adds an overflow check when casting
usizetoi16; and an extra check when incrementing theusizefor good measure (though it should never happen)Are there any user-facing changes?
new error message