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https://issues.apache.org/jira/browse/SPARK-17147?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15584169#comment-15584169
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Justin Miller commented on SPARK-17147:
---------------------------------------

Could this possibly be related to why I'm seeing the following?

16/10/18 02:11:02 WARN TaskSetManager: Lost task 6.0 in stage 2.0 (TID 5823, 
ip-172-20-222-162.int.protectwise.net): java.lang.IllegalStateException: This 
consumer has already been closed.
        at 
org.apache.kafka.clients.consumer.KafkaConsumer.ensureNotClosed(KafkaConsumer.java:1417)
        at 
org.apache.kafka.clients.consumer.KafkaConsumer.acquire(KafkaConsumer.java:1428)
        at 
org.apache.kafka.clients.consumer.KafkaConsumer.poll(KafkaConsumer.java:929)
        at 
org.apache.spark.streaming.kafka010.CachedKafkaConsumer.poll(CachedKafkaConsumer.scala:99)
        at 
org.apache.spark.streaming.kafka010.CachedKafkaConsumer.get(CachedKafkaConsumer.scala:73)
        at 
org.apache.spark.streaming.kafka010.KafkaRDD$KafkaRDDIterator.next(KafkaRDD.scala:227)
        at 
org.apache.spark.streaming.kafka010.KafkaRDD$KafkaRDDIterator.next(KafkaRDD.scala:193)

> Spark Streaming Kafka 0.10 Consumer Can't Handle Non-consecutive Offsets
> ------------------------------------------------------------------------
>
>                 Key: SPARK-17147
>                 URL: https://issues.apache.org/jira/browse/SPARK-17147
>             Project: Spark
>          Issue Type: Bug
>          Components: Streaming
>    Affects Versions: 2.0.0
>            Reporter: Robert Conrad
>
> When Kafka does log compaction offsets often end up with gaps, meaning the 
> next requested offset will be frequently not be offset+1. The logic in 
> KafkaRDD & CachedKafkaConsumer has a baked in assumption that the next offset 
> will always be just an increment of 1 above the previous offset. 
> I have worked around this problem by changing CachedKafkaConsumer to use the 
> returned record's offset, from:
> {{nextOffset = offset + 1}}
> to:
> {{nextOffset = record.offset + 1}}
> and changed KafkaRDD from:
> {{requestOffset += 1}}
> to:
> {{requestOffset = r.offset() + 1}}
> (I also had to change some assert logic in CachedKafkaConsumer).
> There's a strong possibility that I have misconstrued how to use the 
> streaming kafka consumer, and I'm happy to close this out if that's the case. 
> If, however, it is supposed to support non-consecutive offsets (e.g. due to 
> log compaction) I am also happy to contribute a PR.



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