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Date: Wed, 11 Nov 2015 18:16:11 +0000 (UTC)
From: "ASF GitHub Bot (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=15000830#comment-15000830 ] 

ASF GitHub Bot commented on ACCUMULO-3948:
------------------------------------------

Github user joshelser commented on a diff in the pull request:

    https://github.com/apache/accumulo/pull/51#discussion_r44565231
  
    --- Diff: test/pom.xml ---
    @@ -226,6 +226,25 @@
                 </systemPropertyVariables>
               </configuration>
             </plugin>
    +        <plugin>
    +          <groupId>org.apache.maven.plugins</groupId>
    +          <artifactId>maven-jar-plugin</artifactId>
    +          <executions>
    +            <execution>
    +              <goals>
    +                <goal>test-jar</goal>
    +              </goals>
    +              <phase>pre-integration-test</phase>
    --- End diff --
    
    Might be better to just bind this to test-compile to let `mvn test -Dtest=ScannerContextIT` still work. Creating the jar won't be too much of an impact, I guess.


> 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
>
>         Attachments: ACCUMULO-3948.1-6-3.patch, TestIterator.patch
>
>
> 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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