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https://issues.apache.org/jira/browse/SPARK-4964?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14293140#comment-14293140
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Tathagata Das commented on SPARK-4964:
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[~dibbhatt][~jerryshao][~hshreedharan][~c...@koeninger.org]
Please take a look at the design doc and comment on it.
Thank you very much!
> Exactly-once + WAL-free Kafka Support in Spark Streaming
> --------------------------------------------------------
>
> Key: SPARK-4964
> URL: https://issues.apache.org/jira/browse/SPARK-4964
> Project: Spark
> Issue Type: Improvement
> Components: Streaming
> Reporter: Cody Koeninger
>
> There are two issues with the current Kafka support
> - Use of Write Ahead Logs in Spark Streaming to ensure no data is lost -
> Causes data replication in both Kafka AND Spark Streaming.
> - Lack of exactly-once semantics - For background, see
> http://apache-spark-developers-list.1001551.n3.nabble.com/Which-committers-care-about-Kafka-td9827.html
> We want to solve both these problem in JIRA. Please see the following design
> doc for the solution.
> https://docs.google.com/a/databricks.com/document/d/1IuvZhg9cOueTf1mq4qwc1fhPb5FVcaRLcyjrtG4XU1k/edit#heading=h.itproy77j3p
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