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Date: Mon, 17 Oct 2016 04:19:58 +0000 (UTC)
From: "Josh Elser (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (ACCUMULO-4501) Add support to RFile to track
 and store the histogram
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archived-at: Mon, 17 Oct 2016 04:20:00 -0000


    [ https://issues.apache.org/jira/browse/ACCUMULO-4501?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15581160#comment-15581160 ] 

Josh Elser commented on ACCUMULO-4501:
--------------------------------------

Initial wag at an implementation. https://github.com/apache/accumulo/pull/168

*Very* much a work-in-progress.

* Histogram implementation is very naive
* Lots of making internally classes public instead of adding to 1k+ LOC files
* Some simple tests which show basic correctness

Feedback on approach welcome. Will be a nights+weekends thing, so I will not be super responsive on this.

> Add support to RFile to track and store the histogram
> -----------------------------------------------------
>
>                 Key: ACCUMULO-4501
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-4501
>             Project: Accumulo
>          Issue Type: Sub-task
>          Components: client, tserver
>            Reporter: Josh Elser
>            Assignee: Josh Elser
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Modify RFile such that it can build the histogram and store it in an RFile.
> Reading the RFile would deserialize the histogram back into memory.


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