andygrove commented on code in PR #141:
URL: https://github.com/apache/arrow-ballista/pull/141#discussion_r947393519
##########
ballista/rust/scheduler/src/state/execution_graph.rs:
##########
@@ -381,11 +381,21 @@ impl ExecutionPlanVisitor for ExecutionStageBuilder {
} else if let Some(unresolved_shuffle) =
plan.as_any().downcast_ref::<UnresolvedShuffleExec>()
{
- self.output_links
- .insert(unresolved_shuffle.stage_id, self.current_stage_id);
+ if let Some(output_links) =
+ self.output_links.get_mut(&unresolved_shuffle.stage_id)
+ {
+ if !output_links.contains(&self.current_stage_id) {
+ output_links.push(self.current_stage_id);
+ }
+ } else {
+ self.output_links
+ .insert(unresolved_shuffle.stage_id,
vec![self.current_stage_id]);
+ }
if let Some(deps) =
self.stage_dependencies.get_mut(&self.current_stage_id) {
- deps.push(unresolved_shuffle.stage_id)
+ if !deps.contains(&unresolved_shuffle.stage_id) {
Review Comment:
Same question here - would `HashSet` make more sense?
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