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https://issues.apache.org/jira/browse/CASSANDRA-2527?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14004597#comment-14004597
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Jeremy Hanna commented on CASSANDRA-2527:
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The full contact github project that does this:
https://github.com/fullcontact/hadoop-sstable
> 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: Joshua McKenzie
> Priority: Minor
> Labels: hadoop
> Fix For: 3.0
>
>
> 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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