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https://issues.apache.org/jira/browse/CASSANDRA-2527?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13695180#comment-13695180
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Jonathan Ellis commented on CASSANDRA-2527:
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With the code from CASSANDRA-5555, opening "batch mode" SSTR is basically free.
So there's no reason not to do it "right" and add a "use this snapshot"
parameter to the InputFormat.
> 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
> Assignee: Brandon Williams
> Labels: hadoop
> Fix For: 2.1
>
>
> 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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