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Date: Tue, 20 Oct 2015 21:16:27 +0000 (UTC)
From: "Eric Newton (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (ACCUMULO-3948) Enable A/B testing of scan
 iterators on a table
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    [ https://issues.apache.org/jira/browse/ACCUMULO-3948?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14965778#comment-14965778 ] 

Eric Newton commented on ACCUMULO-3948:
---------------------------------------

Scanner is kind of a config object: make a scanner, configure it, then use the iterator it creates.

> Enable A/B testing of scan iterators on a table
> -----------------------------------------------
>
>                 Key: ACCUMULO-3948
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-3948
>             Project: Accumulo
>          Issue Type: Improvement
>          Components: tserver
>            Reporter: Dave Marion
>            Assignee: Dave Marion
>             Fix For: 1.8.0
>
>
> Classpath contexts are assigned to a table via the table configuration. You can test at scale by cloning your table and assigning a new classpath context to the cloned table. However, you would also need to change your application to use the new table names and since we cannot disable compactions you would start to consume more space in the filesystem for that table. We can support users passing in a context name to use for the scan on existing tables. 


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