alamb commented on code in PR #19073:
URL: https://github.com/apache/datafusion/pull/19073#discussion_r2620860213
##########
datafusion/core/src/physical_planner.rs:
##########
@@ -1599,6 +1603,25 @@ impl DefaultPhysicalPlanner {
}
}
+fn has_sufficient_rows_for_repartition(
+ input: &Arc<dyn ExecutionPlan>,
+ session_state: &SessionState,
+) -> Result<bool> {
+ // Get partition statistics, default to repartitioning if unavailable
+ let stats = match input.partition_statistics(None) {
+ Ok(s) => s,
+ Err(_) => return Ok(true),
+ };
+
+ if let Some(num_rows) = stats.num_rows.get_value().copied() {
Review Comment:
I think there is already a config setting that would be appropriate for this
setting (rather than using the batch size):
https://datafusion.apache.org/user-guide/configs.html
datafusion.optimizer.repartition_file_min_size |
-- | --
What do you think?
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