tillrohrmann commented on a change in pull request #6839: [FLINK-10253] Run 
MetricQueryService with lower priority
URL: https://github.com/apache/flink/pull/6839#discussion_r225729531
 
 

 ##########
 File path: 
flink-runtime/src/main/scala/org/apache/flink/runtime/akka/AkkaUtils.scala
 ##########
 @@ -291,12 +291,21 @@ object AkkaUtils {
     ConfigFactory.parseString(config)
   }
 
-  def getThreadPoolExecutorConfig: Config = {
+  def getThreadPoolExecutorConfig(threadPriority: Int): Config = {
+    if (threadPriority < Thread.MIN_PRIORITY || threadPriority > 
Thread.MAX_PRIORITY) {
+      throw new IllegalConfigurationException("The config : " +
+        MetricOptions.QUERY_SERVICE_THREAD_PRIORITY.key() + "'s value must 
between "
+        + Thread.MIN_PRIORITY + " and " + Thread.MAX_PRIORITY +
+        ", but the value is " + threadPriority)
 
 Review comment:
   This should not refer to the `MetricOptions.QUERY_SERVICE_THREAD_PRIORITY` 
option. Instead it should say that the `threadPriority` must be between 
`Thread.MIN_PRIORITY` and `Thread.MAX_PRIORITY`

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