Jackie-Jiang commented on code in PR #14199:
URL: https://github.com/apache/pinot/pull/14199#discussion_r1799977600


##########
pinot-broker/src/main/java/org/apache/pinot/broker/requesthandler/BaseSingleStageBrokerRequestHandler.java:
##########
@@ -485,6 +485,16 @@ protected BrokerResponse handleRequest(long requestId, 
String query, SqlNodeAndO
       if (realtimeTableName == null) {
         realtimeTableConfig = null;
       }
+
+      if ((realtimeTableConfig != null && _routingManager.getDisabledTables()

Review Comment:
   We should allow one table being disabled when querying both offline and 
real-time table.



##########
pinot-broker/src/main/java/org/apache/pinot/broker/routing/BrokerRoutingManager.java:
##########
@@ -115,6 +115,7 @@ public class BrokerRoutingManager implements 
RoutingManager, ClusterChangeHandle
   private ZkHelixPropertyStore<ZNRecord> _propertyStore;
 
   private Set<String> _routableServers;
+  private Set<String> _disabledTables = new HashSet<>();

Review Comment:
   This is not thread safe. I think an easier way to handle this is to add 
`_disabled` field into `RoutingEntry`, and update its value in 
`onAssignmentChange()`



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