alamb commented on code in PR #12456:
URL: https://github.com/apache/datafusion/pull/12456#discussion_r1759143664
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datafusion/core/src/datasource/physical_plan/parquet/opener.rs:
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@@ -41,21 +41,41 @@ use std::sync::Arc;
/// Implements [`FileOpener`] for a parquet file
pub(super) struct ParquetOpener {
+ /// Execution partition index
pub partition_index: usize,
+ /// Column indexes in `table_schema` needed by the query
Review Comment:
This in particular was unclear when @itsjunetime and I read the code (were
the indexes in terms of file_schema or table_schema?) and was the impetus for
this PR
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