tustvold commented on code in PR #2116:
URL: https://github.com/apache/arrow-rs/pull/2116#discussion_r927063011
##########
parquet/src/arrow/record_reader/mod.rs:
##########
@@ -76,33 +77,8 @@ where
{
/// Create a new [`GenericRecordReader`]
pub fn new(desc: ColumnDescPtr) -> Self {
- Self::new_with_options(desc, false)
- }
-
- /// Create a new [`GenericRecordReader`] with the ability to only generate
the bitmask
- ///
- /// If `null_mask_only` is true only the null bitmask will be generated and
- /// [`Self::consume_def_levels`] and [`Self::consume_rep_levels`] will
always return `None`
- ///
- /// It is insufficient to solely check that that the max definition level
is 1 as we
- /// need there to be no nullable parent array that will required decoded
definition levels
- ///
- /// In particular consider the case of:
- ///
- /// ```ignore
- /// message nested {
- /// OPTIONAL Group group {
- /// REQUIRED INT32 leaf;
- /// }
- /// }
- /// ```
- ///
- /// The maximum definition level of leaf is 1, however, we still need to
decode the
- /// definition levels so that the parent group can be constructed correctly
- ///
- pub(crate) fn new_with_options(desc: ColumnDescPtr, null_mask_only: bool)
-> Self {
let def_levels = (desc.max_def_level() > 0)
- .then(|| DefinitionLevelBuffer::new(&desc, null_mask_only));
+ .then(|| DefinitionLevelBuffer::new(&desc,
packed_null_mask(&desc)));
Review Comment:
Correct :+1:
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