jackjlli commented on a change in pull request #5724:
URL: https://github.com/apache/incubator-pinot/pull/5724#discussion_r459094346



##########
File path: 
pinot-controller/src/main/java/org/apache/pinot/controller/api/resources/PinotBrokerRestletResource.java
##########
@@ -129,6 +133,40 @@
     }
   }
 
+
+  @POST
+  @Path("/brokers/instances/{instanceName}/qps")
+  @Produces(MediaType.APPLICATION_JSON)
+  @Consumes(MediaType.TEXT_PLAIN)
+  @ApiOperation(value = "Enable/disable the query rate limiting for a broker 
instance", notes = "Enable/disable the query rate limiting for a broker 
instance")
+  @ApiResponses(value = {@ApiResponse(code = 200, message = "Success"), 
@ApiResponse(code = 400, message = "Bad Request"), @ApiResponse(code = 404, 
message = "Instance not found"), @ApiResponse(code = 500, message = "Internal 
error")})
+  public SuccessResponse toggleQueryRateLimiting(
+      @ApiParam(value = "Broker instance name", required = true, example = 
"Broker_my.broker.com_30000") @PathParam("instanceName") String 
brokerInstanceName,
+      @ApiParam(value = "ENABLE|DISABLE", allowableValues = "ENABLE, DISABLE", 
required = true)  @QueryParam("state") String state) {
+    if (brokerInstanceName == null || 
!brokerInstanceName.startsWith("Broker_")) {
+      LOGGER.info("{} isn't a valid broker instance name", brokerInstanceName);
+      throw new ControllerApplicationException(LOGGER,
+          String.format("'%s' is not a valid broker instance name.", 
brokerInstanceName), Response.Status.BAD_REQUEST);

Review comment:
       Removed the duplicate logging.




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