walterddr commented on code in PR #10473:
URL: https://github.com/apache/pinot/pull/10473#discussion_r1155060568
##########
pinot-query-runtime/src/main/java/org/apache/pinot/query/runtime/operator/MailboxSendOperator.java:
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@@ -151,10 +152,20 @@ protected TransferableBlock getNextBlock() {
try {
transferableBlock = _dataTableBlockBaseOperator.nextBlock();
while (!transferableBlock.isNoOpBlock()) {
- _exchange.send(transferableBlock);
if (transferableBlock.isEndOfStreamBlock()) {
- return transferableBlock;
+ if (transferableBlock.isSuccessfulEndOfStreamBlock()) {
+ //Stats need to be populated here because the block is being sent
to the mailbox
+ // and the receiving opChain will not be able to access the stats
from the previous opChain
+ TransferableBlock eosBlockWithStats =
TransferableBlockUtils.getEndOfStreamTransferableBlock(
+
OperatorUtils.getMetadataFromOperatorStats(_opChainStats.getOperatorStatsMap()));
+ _exchange.send(eosBlockWithStats);
+ return transferableBlock;
Review Comment:
nit: return can be unified outside of the inner if-else loop
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