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https://issues.apache.org/jira/browse/SPARK-9215?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15841011#comment-15841011
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Gaurav Shah commented on SPARK-9215:
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[~tdas] ping

> Implement WAL-free Kinesis receiver that give at-least once guarantee
> ---------------------------------------------------------------------
>
>                 Key: SPARK-9215
>                 URL: https://issues.apache.org/jira/browse/SPARK-9215
>             Project: Spark
>          Issue Type: Improvement
>          Components: DStreams
>    Affects Versions: 1.4.1
>            Reporter: Tathagata Das
>            Assignee: Tathagata Das
>             Fix For: 1.5.0
>
>
> Currently, the KinesisReceiver can loose some data in the case of certain 
> failures (receiver and driver failures). Using the write ahead logs can 
> mitigate some of the problem, but it is not ideal because WALs dont work with 
> S3 (eventually consistency, etc.) which is the most likely file system to be 
> used in the EC2 environment. Hence, we have to take a different approach to 
> improving reliability for Kinesis.
> Detailed design doc - 
> https://docs.google.com/document/d/1k0dl270EnK7uExrsCE7jYw7PYx0YC935uBcxn3p0f58/edit?usp=sharing



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