xanderbailey commented on code in PR #20672:
URL: https://github.com/apache/datafusion/pull/20672#discussion_r2886649160
##########
datafusion/physical-plan/src/spill/spill_pool.rs:
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@@ -247,17 +266,15 @@ impl SpillPoolWriter {
impl Drop for SpillPoolWriter {
fn drop(&mut self) {
- let mut shared = self.shared.lock();
-
- shared.active_writer_count -= 1;
- let is_last_writer = shared.active_writer_count == 0;
-
- if !is_last_writer {
+ if !self.writer_count.is_last() {
Review Comment:
Do you have to atomically decrement and check if it's the last here? Rather
than when you drop the `WriteCount`
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