thinkharderdev commented on code in PR #2526:
URL: https://github.com/apache/arrow-rs/pull/2526#discussion_r950237730
##########
parquet/src/arrow/async_reader.rs:
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@@ -139,6 +143,80 @@ pub trait AsyncFileReader: Send {
/// allowing fine-grained control over how metadata is sourced, in
particular allowing
/// for caching, pre-fetching, catalog metadata, etc...
fn get_metadata(&mut self) -> BoxFuture<'_, Result<Arc<ParquetMetaData>>>;
+
+ /// Provides asynchronous access to the the page index for each column
chunk in a
+ /// row group. Will panic if `row_group_idx` is greater than or equal to
`num_row_groups`
+ fn get_column_indexes(
Review Comment:
Not sure if we should make this a separate constructor or just have it
always use the index. If the index doesn't exist, the cost of determining that
is minimal.
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