alamb commented on code in PR #2791:
URL: https://github.com/apache/arrow-datafusion/pull/2791#discussion_r906813144
##########
datafusion/core/src/execution/context.rs:
##########
@@ -1247,16 +1250,26 @@ impl SessionState {
rules.push(Arc::new(LimitPushDown::new()));
rules.push(Arc::new(SingleDistinctToGroupBy::new()));
+ let mut physical_optimizers: Vec<Arc<dyn PhysicalOptimizerRule + Sync
+ Send>> = vec![
+ Arc::new(AggregateStatistics::new()),
+ Arc::new(HashBuildProbeOrder::new()),
+ ];
+ if config.config_options.get_bool(OPT_COALESCE_BATCHES) {
Review Comment:
I wonder if it would be helpful to add a test to ensure the option to
disable coalsce'ing batches doesn't get broken in the future
##########
datafusion/core/src/config.rs:
##########
@@ -27,6 +28,13 @@ pub const OPT_FILTER_NULL_JOIN_KEYS: &str =
"datafusion.optimizer.filter_null_jo
/// Configuration option "datafusion.execution.batch_size"
pub const OPT_BATCH_SIZE: &str = "datafusion.execution.batch_size";
+/// Configuration option "datafusion.execution.coalesce_batches"
Review Comment:
I really like how this new option framework is coming together ❤️
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