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https://issues.apache.org/jira/browse/KAFKA-6649?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16398134#comment-16398134
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Jason Gustafson commented on KAFKA-6649:
----------------------------------------
The root cause of this is likely KAFKA-3978, which has just been fixed.
> ReplicaFetcher stopped after non fatal exception is thrown
> ----------------------------------------------------------
>
> Key: KAFKA-6649
> URL: https://issues.apache.org/jira/browse/KAFKA-6649
> Project: Kafka
> Issue Type: Bug
> Components: replication
> Affects Versions: 1.0.0, 0.11.0.2, 1.1.0, 1.0.1
> Reporter: Julio Ng
> Priority: Major
>
> We have seen several under-replication partitions, usually triggered by topic
> creation. After digging in the logs, we see the below:
> {noformat}
> [2018-03-12 22:40:17,641] ERROR [ReplicaFetcher replicaId=12, leaderId=0,
> fetcherId=1] Error due to (kafka.server.ReplicaFetcherThread)
> kafka.common.KafkaException: Error processing data for partition
> [[TOPIC_NAME_REMOVED]]-84 offset 2098535
> at
> kafka.server.AbstractFetcherThread$$anonfun$processFetchRequest$2$$anonfun$apply$mcV$sp$1$$anonfun$apply$2.apply(AbstractFetcherThread.scala:204)
> at
> kafka.server.AbstractFetcherThread$$anonfun$processFetchRequest$2$$anonfun$apply$mcV$sp$1$$anonfun$apply$2.apply(AbstractFetcherThread.scala:169)
> at scala.Option.foreach(Option.scala:257)
> at
> kafka.server.AbstractFetcherThread$$anonfun$processFetchRequest$2$$anonfun$apply$mcV$sp$1.apply(AbstractFetcherThread.scala:169)
> at
> kafka.server.AbstractFetcherThread$$anonfun$processFetchRequest$2$$anonfun$apply$mcV$sp$1.apply(AbstractFetcherThread.scala:166)
> at
> scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
> at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48)
> at
> kafka.server.AbstractFetcherThread$$anonfun$processFetchRequest$2.apply$mcV$sp(AbstractFetcherThread.scala:166)
> at
> kafka.server.AbstractFetcherThread$$anonfun$processFetchRequest$2.apply(AbstractFetcherThread.scala:166)
> at
> kafka.server.AbstractFetcherThread$$anonfun$processFetchRequest$2.apply(AbstractFetcherThread.scala:166)
> at kafka.utils.CoreUtils$.inLock(CoreUtils.scala:250)
> at
> kafka.server.AbstractFetcherThread.processFetchRequest(AbstractFetcherThread.scala:164)
> at kafka.server.AbstractFetcherThread.doWork(AbstractFetcherThread.scala:111)
> at kafka.utils.ShutdownableThread.run(ShutdownableThread.scala:82)
> Caused by: org.apache.kafka.common.errors.OffsetOutOfRangeException: Cannot
> increment the log start offset to 2098535 of partition
> [[TOPIC_NAME_REMOVED]]-84 since it is larger than the high watermark -1
> [2018-03-12 22:40:17,641] INFO [ReplicaFetcher replicaId=12, leaderId=0,
> fetcherId=1] Stopped (kafka.server.ReplicaFetcherThread){noformat}
> It looks like that after the ReplicaFetcherThread is stopped, the replicas
> start to lag behind, presumably because we are not fetching from the leader
> anymore. Further examining, the ShutdownableThread.scala object:
> {noformat}
> override def run(): Unit = {
> info("Starting")
> try {
> while (isRunning)
> doWork()
> } catch {
> case e: FatalExitError =>
> shutdownInitiated.countDown()
> shutdownComplete.countDown()
> info("Stopped")
> Exit.exit(e.statusCode())
> case e: Throwable =>
> if (isRunning)
> error("Error due to", e)
> } finally {
> shutdownComplete.countDown()
> }
> info("Stopped")
> }{noformat}
> For the Throwable (non-fatal) case, it just exits the while loop and the
> thread stops doing work. I am not sure whether this is the intended behavior
> of the ShutdownableThread, or the exception should be caught and we should
> keep calling doWork()
>
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