[jira] [Created] (KAFKA-1632) No such method error on KafkaStream.head

["aarti gupta (JIRA)" <ji...@apache.org>]

aarti gupta created KAFKA-1632:
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             Summary: No such method error on KafkaStream.head
                 Key: KAFKA-1632
                 URL: https://issues.apache.org/jira/browse/KAFKA-1632
             Project: Kafka
          Issue Type: Bug
    Affects Versions: 0.8.0
            Reporter: aarti gupta
            Priority: Critical


Hi Kafka team,

We use Kafka to send messages in an high volume/memory crazy application which uses Parallel GC. We send messages at the rate of 12500/min in the first few hours and then the number of messages drop down to 6000/min. Our application usually runs for a maximum of 24 hours

What we have:
1) When we do not send messages through Kafka Producer 0.8, then our application never slows down much and our entire process completes within 24 hours
2) When we use Kafka, our machines slow down in sending messages to around 2500/min and as time progresses, the number of messages being sent is even lesser
3) We suspect that our application spends more time in GC and hence the problem. The Heap Dump does not contain an leak suspect with Kafka, but this slowness happens only when Kafka messaging system is used.

Any pointers that could help us resolve this issue will be highly appreciated.



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