[jira] [Comment Edited] (KAFKA-3400) Topic stop working / can't describe topic

["Ashish K Singh (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KAFKA-3400?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15197911#comment-15197911 ] 

Ashish K Singh edited comment on KAFKA-3400 at 3/16/16 10:50 PM:
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[~tobad357] what is the topic's replication factor set to?

One of the reasons you could see such issue is that the topic gets deleted while a producer is still producing to the topic. Though, the topic gets marked for deletion, as producer is producing the topic, kafka will re-create the topic, if auto topic creation is enabled. However, none of the partitions will be created as the topic is marked for deletion.


was (Author: singhashish):
[~tobad357] what is the topic's replication factor set to?

> Topic stop working / can't describe topic
> -----------------------------------------
>
>                 Key: KAFKA-3400
>                 URL: https://issues.apache.org/jira/browse/KAFKA-3400
>             Project: Kafka
>          Issue Type: Bug
>    Affects Versions: 0.9.0.1
>            Reporter: Tobias
>
> we are seeing an issue were we intermittently (every couple of hours) get and error with certain topics. They stop working and producers give a LeaderNotFoundException.
> When we then try to use kafka-topics.sh to describe the topic we get the error below.
> Error while executing topic command : next on empty iterator
> {{
> [2016-03-15 17:30:26,231] ERROR java.util.NoSuchElementException: next on empty iterator
> 	at scala.collection.Iterator$$anon$2.next(Iterator.scala:39)
> 	at scala.collection.Iterator$$anon$2.next(Iterator.scala:37)
> 	at scala.collection.IterableLike$class.head(IterableLike.scala:91)
> 	at scala.collection.AbstractIterable.head(Iterable.scala:54)
> 	at kafka.admin.TopicCommand$$anonfun$describeTopic$1.apply(TopicCommand.scala:198)
> 	at kafka.admin.TopicCommand$$anonfun$describeTopic$1.apply(TopicCommand.scala:188)
> 	at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
> 	at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47)
> 	at kafka.admin.TopicCommand$.describeTopic(TopicCommand.scala:188)
> 	at kafka.admin.TopicCommand$.main(TopicCommand.scala:66)
> 	at kafka.admin.TopicCommand.main(TopicCommand.scala)
>  (kafka.admin.TopicCommand$)
> }}
> if we delete the topic, then it will start to work again for a while
> We can't see anything obvious in the logs but are happy to provide if needed



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