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https://issues.apache.org/jira/browse/ACCUMULO-1566?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13789839#comment-13789839
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ASF subversion and git services commented on ACCUMULO-1566:
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Commit b4bd204320632b598bee047c620f2e45cc7caef9 in branch 
refs/heads/ACCUMULO-1566 from [~keith_turner]
[ https://git-wip-us.apache.org/repos/asf?p=accumulo.git;h=b4bd204 ]

ACCUMULO-1566 the missing link


> Add ability for client to start Scanner readahead immediately
> -------------------------------------------------------------
>
>                 Key: ACCUMULO-1566
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-1566
>             Project: Accumulo
>          Issue Type: Improvement
>          Components: client
>            Reporter: Josh Elser
>            Assignee: Josh Elser
>             Fix For: 1.6.0
>
>
> When the client cares about getting results in sorted order, the 
> BatchScanner, as nice as it is, is mostly irrelevant.
> One interesting property of the Scanner is that it will begin to pre-fetch 
> more results after the 3rd batch of results has been fetched from the server.
> Clients may have an idea of the number of records that will be returned by a 
> scan, and thus will have an idea about how they want to control such a 
> readahead. It would be nice to allow the client to control after how many 
> batches the readahead thread starts.



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