tustvold commented on code in PR #4327:
URL: https://github.com/apache/arrow-rs/pull/4327#discussion_r1213058826
##########
parquet/src/column/writer/mod.rs:
##########
@@ -308,6 +308,17 @@ impl<'a, E: ColumnValueEncoder> GenericColumnWriter<'a, E>
{
max: Option<&E::T>,
distinct_count: Option<u64>,
) -> Result<usize> {
+ // Check if number of definition levels is the same as number of
repetition levels.
+ if let (Some(def), Some(rep)) = (def_levels, rep_levels) {
Review Comment:
There are already tests of this, they're actually how I realised that the
slicing logic would panic :sweat_smile:
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