alamb commented on code in PR #11479:
URL: https://github.com/apache/datafusion/pull/11479#discussion_r1699984627
##########
datafusion/core/src/datasource/physical_plan/parquet/row_group_filter.rs:
##########
@@ -356,20 +356,24 @@ impl<'a> RowGroupPruningStatistics<'a> {
&'a self,
column: &'b Column,
) -> Result<StatisticsConverter<'a>> {
- StatisticsConverter::try_new(&column.name, self.arrow_schema,
self.parquet_schema)
+ Ok(StatisticsConverter::try_new(
+ &column.name,
+ self.arrow_schema,
+ self.parquet_schema,
+ )?)
}
}
impl<'a> PruningStatistics for RowGroupPruningStatistics<'a> {
fn min_values(&self, column: &Column) -> Option<ArrayRef> {
self.statistics_converter(column)
- .and_then(|c| c.row_group_mins(self.metadata_iter()))
+ .and_then(|c| Ok(c.row_group_mins(self.metadata_iter())?))
Review Comment:
Thank you for the suggestion.
I played around with a few alternatives and I concluded they were not easier
to understand, so I plan to leave it as is. If you feel strongly I will make a
follow on PR to change.
I couldn't figure out a way to use `into()`
## Option 1: using `map_err`
```rust
fn min_values(&self, column: &Column) -> Option<ArrayRef> {
self.statistics_converter(column)
.and_then(|c| {
c.row_group_mins(self.metadata_iter())
.map_err(DataFusionError::from)
})
.ok()
}
```
## Option 2: discard error earlier with `ok()`
Now there are two nested `ok()`s
```rust
fn min_values(&self, column: &Column) -> Option<ArrayRef> {
self.statistics_converter(column)
.ok()
.and_then(|c| c.row_group_mins(self.metadata_iter()).ok())
}
```
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