walterddr commented on code in PR #10797:
URL: https://github.com/apache/pinot/pull/10797#discussion_r1202729305
##########
pinot-query-runtime/src/main/java/org/apache/pinot/query/runtime/operator/exchange/SingletonExchange.java:
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@@ -41,7 +42,13 @@ class SingletonExchange extends BlockExchange {
protected void route(List<SendingMailbox> mailbox, TransferableBlock block)
throws Exception {
for (SendingMailbox sendingMailbox : mailbox) {
- sendBlock(sendingMailbox, block);
+ if (isLocal(sendingMailbox)) {
Review Comment:
TODO for this PR
- Throw when 0, or more than 1 exchange is configured ( test on block
exchange unit test)
- Do not allow this ok worker assignment strategy in the first place
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