paleolimbot commented on code in PR #45459:
URL: https://github.com/apache/arrow/pull/45459#discussion_r2007924014
##########
cpp/src/parquet/metadata.cc:
##########
@@ -309,6 +321,14 @@ class ColumnChunkMetaData::ColumnChunkMetaDataImpl {
descr_->sort_order());
}
+ inline bool is_geo_stats_set() const {
+ if (possible_geo_stats_ == nullptr &&
+ column_metadata_->__isset.geospatial_statistics) {
+ possible_geo_stats_ = MakeColumnGeometryStats(*column_metadata_, descr_);
Review Comment:
I don't really mind either way, but the `Statistics` are currently
initialized in exactly the same way:
```c
if (possible_stats_ == nullptr) {
possible_stats_ = MakeColumnStats(*column_metadata_, descr_);
}
```
...and so even if I update this there is still no thread safety for the
`ColumnChunkMetadata`.
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