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From "Sergey AKhmatov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KAFKA-3240) Replication issues
Date Fri, 06 Apr 2018 08:18:00 GMT

    [ https://issues.apache.org/jira/browse/KAFKA-3240?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16428090#comment-16428090
] 

Sergey AKhmatov commented on KAFKA-3240:
----------------------------------------

Yes, I was running kafka on ZFS. I had some concerns about compression and tried disabling
it, but the problem repeated with or without compression.

Never tried running it on UFS to check if it makes difference.

> Replication issues
> ------------------
>
>                 Key: KAFKA-3240
>                 URL: https://issues.apache.org/jira/browse/KAFKA-3240
>             Project: Kafka
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 0.8.2.2, 0.9.0.0, 0.9.0.1
>         Environment: FreeBSD 10.2-RELEASE-p9
>            Reporter: Jan Omar
>            Priority: Major
>              Labels: reliability
>
> Hi,
> We are trying to replace our 3-broker cluster running on 0.6 with a new cluster on 0.9.0.1
(but tried 0.8.2.2 and 0.9.0.0 as well).
> - 3 kafka nodes with one zookeeper instance on each machine
> - FreeBSD 10.2 p9
> - Nagle off (sysctl net.inet.tcp.delayed_ack=0)
> - all kafka machines write a ZFS ZIL to a dedicated SSD
> - 3 producers on 3 machines, writing to 1 topics, partitioning 3, replication factor
3
> - acks all
> - 10 Gigabit Ethernet, all machines on one switch, ping 0.05 ms worst case.
> While using the ProducerPerformance or rdkafka_performance we are seeing very strange
Replication errors. Any hint on what's going on would be highly appreciated. Any suggestion
on how to debug this properly would help as well.
> This is what our broker config looks like:
> {code}
> broker.id=5
> auto.create.topics.enable=false
> delete.topic.enable=true
> listeners=PLAINTEXT://:9092
> port=9092
> host.name=kafka-five.acc
> advertised.host.name=10.5.3.18
> zookeeper.connect=zookeeper-four.acc:2181,zookeeper-five.acc:2181,zookeeper-six.acc:2181
> zookeeper.connection.timeout.ms=6000
> num.replica.fetchers=1
> replica.fetch.max.bytes=100000000
> replica.fetch.wait.max.ms=500
> replica.high.watermark.checkpoint.interval.ms=5000
> replica.socket.timeout.ms=300000
> replica.socket.receive.buffer.bytes=65536
> replica.lag.time.max.ms=1000
> min.insync.replicas=2
> controller.socket.timeout.ms=30000
> controller.message.queue.size=100
> log.dirs=/var/db/kafka
> num.partitions=8
> message.max.bytes=100000000
> auto.create.topics.enable=false
> log.index.interval.bytes=4096
> log.index.size.max.bytes=10485760
> log.retention.hours=168
> log.flush.interval.ms=10000
> log.flush.interval.messages=20000
> log.flush.scheduler.interval.ms=2000
> log.roll.hours=168
> log.retention.check.interval.ms=300000
> log.segment.bytes=536870912
> zookeeper.connection.timeout.ms=1000000
> zookeeper.sync.time.ms=5000
> num.io.threads=8
> num.network.threads=4
> socket.request.max.bytes=104857600
> socket.receive.buffer.bytes=1048576
> socket.send.buffer.bytes=1048576
> queued.max.requests=100000
> fetch.purgatory.purge.interval.requests=100
> producer.purgatory.purge.interval.requests=100
> replica.lag.max.messages=10000000
> {code}
> These are the errors we're seeing:
> {code:borderStyle=solid}
> ERROR [Replica Manager on Broker 5]: Error processing fetch operation on partition [test,0]
offset 50727 (kafka.server.ReplicaManager)
> java.lang.IllegalStateException: Invalid message size: 0
> 	at kafka.log.FileMessageSet.searchFor(FileMessageSet.scala:141)
> 	at kafka.log.LogSegment.translateOffset(LogSegment.scala:105)
> 	at kafka.log.LogSegment.read(LogSegment.scala:126)
> 	at kafka.log.Log.read(Log.scala:506)
> 	at kafka.server.ReplicaManager$$anonfun$readFromLocalLog$1.apply(ReplicaManager.scala:536)
> 	at kafka.server.ReplicaManager$$anonfun$readFromLocalLog$1.apply(ReplicaManager.scala:507)
> 	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:245)
> 	at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:245)
> 	at scala.collection.immutable.HashMap$HashMap1.foreach(HashMap.scala:221)
> 	at scala.collection.immutable.HashMap$HashTrieMap.foreach(HashMap.scala:428)
> 	at scala.collection.TraversableLike$class.map(TraversableLike.scala:245)
> 	at scala.collection.AbstractTraversable.map(Traversable.scala:104)
> 	at kafka.server.ReplicaManager.readFromLocalLog(ReplicaManager.scala:507)
> 	at kafka.server.ReplicaManager.fetchMessages(ReplicaManager.scala:462)
> 	at kafka.server.KafkaApis.handleFetchRequest(KafkaApis.scala:431)
> 	at kafka.server.KafkaApis.handle(KafkaApis.scala:69)
> 	at kafka.server.KafkaRequestHandler.run(KafkaRequestHandler.scala:60)
> 	at java.lang.Thread.run(Thread.java:745)0
> {code}
> and 
> {code}
> ERROR Found invalid messages during fetch for partition [test,0] offset 2732 error Message
found with corrupt size (0) in shallow iterator (kafka.server.ReplicaFetcherThread)
> {code}



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