mumrah commented on a change in pull request #9100:
URL: https://github.com/apache/kafka/pull/9100#discussion_r470673412
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File path: core/src/main/scala/kafka/server/AlterIsrChannelManager.scala
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@@ -0,0 +1,132 @@
+package kafka.server
+
+import java.util
+import java.util.concurrent.{ScheduledFuture, TimeUnit}
+import java.util.concurrent.atomic.AtomicLong
+
+import kafka.api.LeaderAndIsr
+import kafka.metrics.KafkaMetricsGroup
+import kafka.utils.{Logging, Scheduler}
+import kafka.zk.KafkaZkClient
+import org.apache.kafka.clients.ClientResponse
+import org.apache.kafka.common.TopicPartition
+import
org.apache.kafka.common.message.AlterIsrRequestData.{AlterIsrRequestPartitions,
AlterIsrRequestTopics}
+import org.apache.kafka.common.message.{AlterIsrRequestData,
AlterIsrResponseData}
+import org.apache.kafka.common.protocol.Errors
+import org.apache.kafka.common.requests.{AlterIsrRequest, AlterIsrResponse}
+
+import scala.collection.mutable
+import scala.jdk.CollectionConverters._
+
+/**
+ * Handles the sending of AlterIsr requests to the controller. Updating the
ISR is an asynchronous operation,
+ * so partitions will learn about updates through LeaderAndIsr messages sent
from the controller
+ */
+trait AlterIsrChannelManager {
+ val IsrChangePropagationBlackOut = 5000L
+ val IsrChangePropagationInterval = 60000L
+
+ def enqueueIsrUpdate(alterIsrItem: AlterIsrItem): Unit
+
+ def clearPending(topicPartition: TopicPartition): Unit
+
+ def startup(): Unit
+
+ def shutdown(): Unit
+}
+
+case class AlterIsrItem(topicPartition: TopicPartition, leaderAndIsr:
LeaderAndIsr)
+
+class AlterIsrChannelManagerImpl(val controllerChannelManager:
BrokerToControllerChannelManager,
+ val zkClient: KafkaZkClient,
+ val scheduler: Scheduler,
+ val brokerId: Int,
+ val brokerEpoch: Long) extends
AlterIsrChannelManager with Logging with KafkaMetricsGroup {
Review comment:
Fixed this by adding getBrokerEpoch to KafkaZkClient
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