PrachiKhobragade commented on code in PR #8550:
URL: https://github.com/apache/pinot/pull/8550#discussion_r854662582


##########
pinot-broker/src/main/java/org/apache/pinot/broker/requesthandler/BaseBrokerRequestHandler.java:
##########
@@ -2151,6 +2152,18 @@ static void validateRequest(PinotQuery pinotQuery, int 
queryResponseLimit) {
         || !QueryOptionsUtils.isResponseFormatSQL(queryOptions)) {
       throw new IllegalStateException("SQL query should always have response 
format and group-by mode set to SQL");
     }
+    try {
+    // throw errors if options is less than 1 or invalid
+      Integer numReplicaGroupsToQuery = 
QueryOptionsUtils.getNumReplicaGroupsToQuery(queryOptions);
+      if (numReplicaGroupsToQuery != null) {
+        Preconditions.checkState(numReplicaGroupsToQuery > 0, 
"numReplicaGroups must be "
+            + "positive number, got: %d", numReplicaGroupsToQuery);
+      }
+    } catch (NumberFormatException ex) {
+      String numReplicaGroupsToQuery = 
queryOptions.get(Broker.Request.QueryOptionKey.NUM_REPLICA_GROUPS_TO_QUERY);
+      throw new IllegalStateException(String.format("numReplicaGroups must be 
a positive number, got: %d",

Review Comment:
   Talked offline, broker-mp handles that and sends 400



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