tyamashi-oss commented on code in PR #12296:
URL: https://github.com/apache/kafka/pull/12296#discussion_r914719051


##########
core/src/test/scala/unit/kafka/log/LogCleanerTest.scala:
##########
@@ -1854,6 +1853,26 @@ class LogCleanerTest {
     } finally logCleaner.shutdown()
   }
 
+  @Test
+  def testReconfigureLogCleanerIoMaxBytesPerSecond(): Unit = {
+    val oldKafkaProps = TestUtils.createBrokerConfig(1, "localhost:2181")
+    oldKafkaProps.put(KafkaConfig.LogCleanerIoMaxBytesPerSecondProp, 10000000)
+
+    val logCleaner = new LogCleaner(LogCleaner.cleanerConfig(new 
KafkaConfig(oldKafkaProps)),
+      logDirs = Array(TestUtils.tempDir()),
+      logs = new Pool[TopicPartition, UnifiedLog](),
+      logDirFailureChannel = new LogDirFailureChannel(1),
+      time = time)
+
+    assertEquals(logCleaner.throttler.desiredRatePerSec, 10000000, 
"Throttler.desiredRatePerSec should be initialized with 
KafkaConfig.LogCleanerIoMaxBytesPerSecondProp")

Review Comment:
   Thank you. I’ve updated the assert method parameters and the error message. 
   
https://github.com/apache/kafka/pull/12296/commits/e05707d5613d096df06c4e96085deb481b00a7e7



##########
core/src/test/scala/unit/kafka/log/LogCleanerTest.scala:
##########
@@ -1854,6 +1853,26 @@ class LogCleanerTest {
     } finally logCleaner.shutdown()
   }
 
+  @Test
+  def testReconfigureLogCleanerIoMaxBytesPerSecond(): Unit = {
+    val oldKafkaProps = TestUtils.createBrokerConfig(1, "localhost:2181")
+    oldKafkaProps.put(KafkaConfig.LogCleanerIoMaxBytesPerSecondProp, 10000000)
+
+    val logCleaner = new LogCleaner(LogCleaner.cleanerConfig(new 
KafkaConfig(oldKafkaProps)),
+      logDirs = Array(TestUtils.tempDir()),
+      logs = new Pool[TopicPartition, UnifiedLog](),
+      logDirFailureChannel = new LogDirFailureChannel(1),
+      time = time)
+
+    assertEquals(logCleaner.throttler.desiredRatePerSec, 10000000, 
"Throttler.desiredRatePerSec should be initialized with 
KafkaConfig.LogCleanerIoMaxBytesPerSecondProp")
+
+    val newKafkaProps = TestUtils.createBrokerConfig(1, "localhost:2181")
+    newKafkaProps.put(KafkaConfig.LogCleanerIoMaxBytesPerSecondProp, 20000000)
+
+    logCleaner.reconfigure(new KafkaConfig(oldKafkaProps), new 
KafkaConfig(newKafkaProps))
+
+    assertEquals(logCleaner.throttler.desiredRatePerSec, 20000000, 
"Throttler.desiredRatePerSec should be updated with new 
KafkaConfig.LogCleanerIoMaxBytesPerSecondProp")

Review Comment:
   Thank you. I’ve update the error message. 
   
https://github.com/apache/kafka/pull/12296/commits/e05707d5613d096df06c4e96085deb481b00a7e7



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