ankitsultana commented on code in PR #14048:
URL: https://github.com/apache/pinot/pull/14048#discussion_r2673816899
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pinot-broker/src/main/java/org/apache/pinot/broker/broker/helix/BaseBrokerStarter.java:
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@@ -326,16 +330,25 @@ public void start()
_queryQuotaManager, tableCache, nettyDefaults, tlsDefaults,
_serverRoutingStatsManager);
}
MultiStageBrokerRequestHandler multiStageBrokerRequestHandler = null;
+ QueryDispatcher queryDispatcher = null;
if (_brokerConf.getProperty(Helix.CONFIG_OF_MULTI_STAGE_ENGINE_ENABLED,
Helix.DEFAULT_MULTI_STAGE_ENGINE_ENABLED)) {
// multi-stage request handler uses both Netty and GRPC ports.
// worker requires both the "Netty port" for protocol transport; and
"GRPC port" for mailbox transport.
// TODO: decouple protocol and engine selection.
+ queryDispatcher = createQueryDispatcher(_brokerConf);
Review Comment:
Yeah the reason was that QueryDispatcher has an in-memory state so we wanted
them to be decoupled.
Jackie just merged a PR that creates a separate class for the Time Series
dispatcher: https://github.com/apache/pinot/pull/17474
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