[jira] [Created] (SPARK-12103) KafkaUtils createStream with multiple topics -- does not work as expected

["Dan Dutrow (JIRA)" <ji...@apache.org>]

Dan Dutrow created SPARK-12103:
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             Summary: KafkaUtils createStream with multiple topics -- does not work as expected
                 Key: SPARK-12103
                 URL: https://issues.apache.org/jira/browse/SPARK-12103
             Project: Spark
          Issue Type: Improvement
          Components: Streaming
    Affects Versions: 1.0.0
            Reporter: Dan Dutrow
             Fix For: 1.0.1


Default way of creating stream out of Kafka source would be as

    val stream = KafkaUtils.createStream(ssc,"localhost:2181","logs", Map("retarget" -> 2,"datapair" -> 2))

However, if two topics - in this case "retarget" and "datapair" - are very different, there is no way to set up different filter, mapping functions, etc), as they are effectively merged.

However, instance of KafkaInputDStream, created with this call internally calls ConsumerConnector.createMessageStream() which returns *map* of KafkaStreams, keyed by topic. It would be great if this map would be exposed somehow, so aforementioned call 

    val streamS = KafkaUtils.createStreamS(...)

returned map of streams.

Regards,
Sergey Malov
Collective Media



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