walterddr commented on code in PR #12079:
URL: https://github.com/apache/pinot/pull/12079#discussion_r1419625532
##########
pinot-query-planner/src/main/java/org/apache/pinot/query/planner/physical/MailboxAssignmentVisitor.java:
##########
@@ -144,4 +145,23 @@ public Void process(PlanNode node, DispatchablePlanContext
context) {
}
return null;
}
+
+ private boolean isDirectExchangeCompatible(DispatchablePlanMetadata sender,
DispatchablePlanMetadata receiver) {
+ Map<Integer, QueryServerInstance> senderServerMap =
sender.getWorkerIdToServerInstanceMap();
+ Map<Integer, QueryServerInstance> receiverServerMap =
receiver.getWorkerIdToServerInstanceMap();
+
+ int numSenders = senderServerMap.size();
+ int numReceivers = receiverServerMap.size();
+ if (sender.getScannedTables().size() > 0 &&
receiver.getScannedTables().size() == 0) {
+ // leaf-to-intermediate condition
+ return numSenders * sender.getPartitionParallelism() == numReceivers
+ && sender.getPartitionFunction() != null
+ &&
sender.getPartitionFunction().equals(receiver.getPartitionFunction());
Review Comment:
done
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