[jira] [Commented] (CASSANDRA-2527) Add ability to snapshot data as input to hadoop jobs

[" Brian Hess (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-2527?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15202252#comment-15202252 ] 

 Brian Hess commented on CASSANDRA-2527:
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[~iamaleksey] - this ticket isn't only applicable to Hadoop, but to any analytics engine, including Spark.  I think we should either reopen this ticket and retarget to Spark (though the same mechanism would be interesting to Hadoop, Flink, etc) or open a new one with the word "Spark" replacing the word "Hadoop", but otherwise the exact same idea.

> Add ability to snapshot data as input to hadoop jobs
> ----------------------------------------------------
>
>                 Key: CASSANDRA-2527
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2527
>             Project: Cassandra
>          Issue Type: New Feature
>            Reporter: Jeremy Hanna
>            Priority: Minor
>              Labels: hadoop
>
> It is desirable to have immutable inputs to hadoop jobs for the duration of the job.  That way re-execution of individual tasks do not alter the output.  One way to accomplish this would be to snapshot the data that is used as input to a job.



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