Jackie-Jiang commented on code in PR #11912:
URL: https://github.com/apache/pinot/pull/11912#discussion_r1378317237
##########
pinot-query-planner/src/main/java/org/apache/pinot/query/planner/logical/PlanFragmenter.java:
##########
@@ -126,49 +124,65 @@ public PlanNode visitExchange(ExchangeNode node, Context
context) {
if (!isPlanFragmentSplitter(node)) {
return process(node, context);
}
- int currentPlanFragmentId = context._previousPlanFragmentId;
- int nextPlanFragmentId = ++context._currentPlanFragmentId;
- // Set previous PlanFragment ID in the context to be the next PlanFragment
ID to be used by the child node.
- context._previousPlanFragmentId = nextPlanFragmentId;
- PlanNode nextPlanFragmentRoot = node.getInputs().get(0).visit(this,
context);
+ // Split the ExchangeNode to a MailboxReceiveNode and a MailboxSendNode,
where MailboxReceiveNode is the leave node
+ // of the current PlanFragment, and MailboxSendNode is the root node of
the next PlanFragment.
+ int receiverPlanFragmentId = context._currentPlanFragmentId;
+ int senderPlanFragmentId = context._nextPlanFragmentId.getAndIncrement();
Review Comment:
Good point, refactored again
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