seddonm1 commented on a change in pull request #8866:
URL: https://github.com/apache/arrow/pull/8866#discussion_r539028012
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File path: rust/datafusion/src/datasource/datasource.rs
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@@ -24,6 +24,15 @@ use crate::arrow::datatypes::SchemaRef;
use crate::error::Result;
use crate::physical_plan::ExecutionPlan;
+/// The table statistics
+#[derive(Clone)]
+pub struct Statistics {
+ /// The number of table rows
+ pub num_rows: i64,
Review comment:
My understanding is that because the parquet reader produces` i64` which
(assuming above 0) is less than `u64` whereas a `usize` _may_ be smaller
depending on compile target.
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