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From "Soumyajit Sahu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KAFKA-3123) Follower Broker cannot start if offsets are already out of range
Date Tue, 29 Nov 2016 20:17:58 GMT

    [ https://issues.apache.org/jira/browse/KAFKA-3123?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15706415#comment-15706415
] 

Soumyajit Sahu commented on KAFKA-3123:
---------------------------------------

I am closing this previously opened (and now obsolete) PR.

> Follower Broker cannot start if offsets are already out of range
> ----------------------------------------------------------------
>
>                 Key: KAFKA-3123
>                 URL: https://issues.apache.org/jira/browse/KAFKA-3123
>             Project: Kafka
>          Issue Type: Bug
>          Components: core, replication
>    Affects Versions: 0.9.0.0
>            Reporter: Soumyajit Sahu
>            Assignee: Soumyajit Sahu
>            Priority: Critical
>              Labels: patch
>             Fix For: 0.10.2.0
>
>         Attachments: 0001-Fix-Follower-crashes-when-offset-out-of-range-during.patch
>
>
> I was trying to upgrade our test Windows cluster from 0.8.1.1 to 0.9.0 one machine at
a time. Our logs have just 2 hours of retention. I had re-imaged the test machine under consideration,
and got the following error in loop after starting afresh with 0.9.0 broker:
> [2016-01-19 13:57:28,809] WARN [ReplicaFetcherThread-1-169595708], Replica 177775588
for partition [EventLogs4,1] reset its fetch offset from 0 to current leader 169595708's start
offset 334086 (kafka.server.ReplicaFetcherThread)
> [2016-01-19 13:57:28,809] ERROR [ReplicaFetcherThread-1-169595708], Error getting offset
for partition [EventLogs4,1] to broker 169595708 (kafka.server.ReplicaFetcherThread)
> java.lang.IllegalStateException: Compaction for partition [EXO_EventLogs4,1] cannot be
aborted and paused since it is in LogCleaningPaused state.
> 	at kafka.log.LogCleanerManager$$anonfun$abortAndPauseCleaning$1.apply$mcV$sp(LogCleanerManager.scala:149)
> 	at kafka.log.LogCleanerManager$$anonfun$abortAndPauseCleaning$1.apply(LogCleanerManager.scala:140)
> 	at kafka.log.LogCleanerManager$$anonfun$abortAndPauseCleaning$1.apply(LogCleanerManager.scala:140)
> 	at kafka.utils.CoreUtils$.inLock(CoreUtils.scala:262)
> 	at kafka.log.LogCleanerManager.abortAndPauseCleaning(LogCleanerManager.scala:140)
> 	at kafka.log.LogCleaner.abortAndPauseCleaning(LogCleaner.scala:141)
> 	at kafka.log.LogManager.truncateFullyAndStartAt(LogManager.scala:304)
> 	at kafka.server.ReplicaFetcherThread.handleOffsetOutOfRange(ReplicaFetcherThread.scala:185)
> 	at kafka.server.AbstractFetcherThread$$anonfun$processFetchRequest$2$$anonfun$apply$mcV$sp$1$$anonfun$apply$2.apply(AbstractFetcherThread.scala:152)
> 	at kafka.server.AbstractFetcherThread$$anonfun$processFetchRequest$2$$anonfun$apply$mcV$sp$1$$anonfun$apply$2.apply(AbstractFetcherThread.scala:122)
> 	at scala.Option.foreach(Option.scala:236)
> 	at kafka.server.AbstractFetcherThread$$anonfun$processFetchRequest$2$$anonfun$apply$mcV$sp$1.apply(AbstractFetcherThread.scala:122)
> 	at kafka.server.AbstractFetcherThread$$anonfun$processFetchRequest$2$$anonfun$apply$mcV$sp$1.apply(AbstractFetcherThread.scala:120)
> 	at scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:98)
> 	at scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:98)
> 	at scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:226)
> 	at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:39)
> 	at scala.collection.mutable.HashMap.foreach(HashMap.scala:98)
> 	at kafka.server.AbstractFetcherThread$$anonfun$processFetchRequest$2.apply$mcV$sp(AbstractFetcherThread.scala:120)
> 	at kafka.server.AbstractFetcherThread$$anonfun$processFetchRequest$2.apply(AbstractFetcherThread.scala:120)
> 	at kafka.server.AbstractFetcherThread$$anonfun$processFetchRequest$2.apply(AbstractFetcherThread.scala:120)
> 	at kafka.utils.CoreUtils$.inLock(CoreUtils.scala:262)
> 	at kafka.server.AbstractFetcherThread.processFetchRequest(AbstractFetcherThread.scala:118)
> 	at kafka.server.AbstractFetcherThread.doWork(AbstractFetcherThread.scala:93)
> 	at kafka.utils.ShutdownableThread.run(ShutdownableThread.scala:63)
> I could unblock myself with a code change. I deleted the action for "case s =>" in
the LogCleanerManager.scala's abortAndPauseCleaning(). I think we should not throw exception
if the state is already LogCleaningAborted or LogCleaningPaused in this function, but instead
just let it roll.



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