efredine commented on code in PR #11200:
URL: https://github.com/apache/datafusion/pull/11200#discussion_r1663308953
##########
datafusion/core/src/datasource/physical_plan/parquet/statistics.rs:
##########
@@ -903,6 +917,21 @@ macro_rules! get_data_page_statistics {
new_empty_array(&DataType::Time64(unit.clone()))
}
})
+ },
+ Some(DataType::FixedSizeBinary(size)) => {
+ Ok(Arc::new(
+ FixedSizeBinaryArray::from(
+ [<$stat_type_prefix
FixedLenByteArrayDataPageStatsIterator>]::new($iterator).map(|x| {
+ x.into_iter().filter_map(|x| x).map(|x| {
+ if x.len().try_into() == Ok(*size) {
+ Some(x.data().to_vec())
+ } else {
+ None
+ }
+ })
+ }).flatten().collect::<Vec<_>>()
+ )
+ ))
Review Comment:
So, looking even further - this loop is just replicating the logic in
`try_from_iter`. So this can be further simplified to:
```Rust
Some(DataType::FixedSizeBinary(size)) => {
Ok(Arc::new(
FixedSizeBinaryArray::try_from_iter(
[<$stat_type_prefix
FixedLenByteArrayDataPageStatsIterator>]::new($iterator)
.flat_map(|x| x.into_iter())
.filter_map(|x| x)
).unwrap_or_else(|e| {
log::debug!("FixedSizeBinary statistics is
invalid: {}", e);
FixedSizeBinaryArray::new(*size, vec![].into(),
None)
})
))
},
```
Which will also be more efficient because it's not performing the same check
twice. And we should probably apply this change to the RowGroup statistics
accumulator as well?
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