siddharthteotia commented on code in PR #8558:
URL: https://github.com/apache/pinot/pull/8558#discussion_r855405640
##########
pinot-query-runtime/src/main/java/org/apache/pinot/query/runtime/executor/WorkerQueryExecutor.java:
##########
@@ -98,22 +100,27 @@ public void runJob() {
private BaseOperator<DataTableBlock> getOperator(long requestId, StageNode
stageNode,
Map<Integer, StageMetadata> metadataMap) {
// TODO: optimize this into a framework. (physical planner)
- if (stageNode instanceof MailboxSendNode) {
- MailboxSendNode sendNode = (MailboxSendNode) stageNode;
- BaseOperator<DataTableBlock> nextOperator = getOperator(requestId,
sendNode.getInputs().get(0), metadataMap);
- StageMetadata receivingStageMetadata =
metadataMap.get(sendNode.getReceiverStageId());
- return new MailboxSendOperator(_mailboxService, nextOperator,
receivingStageMetadata.getServerInstances(),
- sendNode.getExchangeType(), _hostName, _port, requestId,
sendNode.getStageId());
- } else if (stageNode instanceof MailboxReceiveNode) {
+ if (stageNode instanceof MailboxReceiveNode) {
MailboxReceiveNode receiveNode = (MailboxReceiveNode) stageNode;
List<ServerInstance> sendingInstances =
metadataMap.get(receiveNode.getSenderStageId()).getServerInstances();
return new MailboxReceiveOperator(_mailboxService,
RelDistribution.Type.ANY, sendingInstances, _hostName, _port,
requestId, receiveNode.getSenderStageId());
+ } else if (stageNode instanceof MailboxSendNode) {
+ MailboxSendNode sendNode = (MailboxSendNode) stageNode;
+ BaseOperator<DataTableBlock> nextOperator = getOperator(requestId,
sendNode.getInputs().get(0), metadataMap);
+ StageMetadata receivingStageMetadata =
metadataMap.get(sendNode.getReceiverStageId());
+ return new MailboxSendOperator(_mailboxService, nextOperator,
receivingStageMetadata.getServerInstances(),
+ sendNode.getExchangeType(), sendNode.getPartitionKeySelector(),
_hostName, _port, requestId,
+ sendNode.getStageId());
} else if (stageNode instanceof JoinNode) {
JoinNode joinNode = (JoinNode) stageNode;
BaseOperator<DataTableBlock> leftOperator = getOperator(requestId,
joinNode.getInputs().get(0), metadataMap);
BaseOperator<DataTableBlock> rightOperator = getOperator(requestId,
joinNode.getInputs().get(1), metadataMap);
return new BroadcastJoinOperator(leftOperator, rightOperator,
joinNode.getCriteria());
Review Comment:
+1 - it is a physical relational operator for executing join using hash. A
nested loop join can also be implemented in the future and the distribution
strategy could still possibly be broadcast
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