Jackie-Jiang commented on a change in pull request #7568:
URL: https://github.com/apache/pinot/pull/7568#discussion_r755656841
##########
File path:
pinot-broker/src/main/java/org/apache/pinot/broker/requesthandler/BaseBrokerRequestHandler.java
##########
@@ -519,6 +543,18 @@ private BrokerResponseNative handleSQLRequest(long
requestId, String query, Json
return brokerResponse;
}
+ /** Set EXPLAIN PLAN query to route to only one server. */
+ private void setRoutingToOneServer(Map<ServerInstance, List<String>>
routingTable) {
+ Set<Map.Entry<ServerInstance, List<String>>> servers =
routingTable.entrySet();
+ // only send request to 1 server
+ Map.Entry<ServerInstance, List<String>> server = servers.iterator().next();
+ routingTable.clear();
+ List<String> segments = new ArrayList<>();
+ // only generate the plan for 1 segment
+ segments.add(server.getValue().get(0));
+ routingTable.put(server.getKey(), segments);
Review comment:
(minor) No need to create an extra list
```suggestion
routingTable.put(entry.getKey(), entry.getValue());
```
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