comphead commented on code in PR #16970:
URL: https://github.com/apache/datafusion/pull/16970#discussion_r2245812112
##########
datafusion/optimizer/src/optimizer.rs:
##########
@@ -137,13 +137,15 @@ impl OptimizerContext {
Self {
query_execution_start_time: Utc::now(),
alias_generator: Arc::new(AliasGenerator::new()),
- options,
+ options: Arc::new(options),
}
}
/// Specify whether to enable the filter_null_keys rule
pub fn filter_null_keys(mut self, filter_null_keys: bool) -> Self {
- self.options.optimizer.filter_null_join_keys = filter_null_keys;
+ Arc::make_mut(&mut self.options)
Review Comment:
using `make_mut` can cause extra inner cloning if other Arcs already points
to the object https://doc.rust-lang.org/std/sync/struct.Arc.html#method.make_mut
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