mcvsubbu commented on a change in pull request #6650:
URL: https://github.com/apache/incubator-pinot/pull/6650#discussion_r591699572



##########
File path: compatibility-verifier/compCheck.sh
##########
@@ -105,13 +102,18 @@ function stopService() {
   else
     echo "Pid file ${dirName}/${serviceName}.pid  not found. Failed to stop 
component ${serviceName}"
   fi
+  echo "${serviceName} stopped"
 }
 
 # Starts a Pinot cluster given a specific target directory
 function startServices() {
   dirName=$1
   startService zookeeper "$dirName"
+  # Controller depends on zookeeper, if not wait zookeeper to be ready, 
controller will crash.
+  waitForZkReady
   startService controller "$dirName"
+  # Broker depends on controller, if not wait controller to be ready, broker 
will crash.
+  waitForControllerReady

Review comment:
       Add a `waitForClusterReady` after line 118.
   It may also be useful to add a `waitForKafkaReady` after line 119 since 
there may be some race conditions.




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