[GitHub] [kafka] itantiger commented on a change in pull request #9790: Some parameters will be overwritten which was configured in consumer.config.

[GitBox <gi...@apache.org>]

itantiger commented on a change in pull request #9790:
URL: https://github.com/apache/kafka/pull/9790#discussion_r549583198



##########
File path: core/src/test/scala/unit/kafka/tools/ConsumerPerformanceTest.scala
##########
@@ -96,6 +97,28 @@ class ConsumerPerformanceTest {
     assertEquals("test", config.topic)
     assertEquals(10, config.numMessages)
   }
+  
+  @Test
+  def testConfigWithRecognizedOptionOverride(): Unit = {
+    val propsFile = TestUtils.tempFile()
+    val propsStream = Files.newOutputStream(propsFile.toPath)
+    propsStream.write("group.id=test_group_id\n".getBytes())
+    propsStream.write("client.id=test_client_id".getBytes())
+    propsStream.close()

Review comment:
       `--topic` is a `REQUIRED` argument in command-line, I thank Its value is determined by the command line. 




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