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From "Christopher Tubbs (JIRA)" <>
Subject [jira] [Updated] (ACCUMULO-501) RFile should store the key count in metadata
Date Tue, 18 Dec 2012 18:42:14 GMT


Christopher Tubbs updated ACCUMULO-501:

    Fix Version/s:     (was: 1.5.0)
> RFile should store the key count in metadata
> --------------------------------------------
>                 Key: ACCUMULO-501
>                 URL:
>             Project: Accumulo
>          Issue Type: Improvement
>            Reporter: Eric Newton
>            Assignee: Eric Newton
> BulkImport estimates the number of keys in a file to be zero.  We store the largest and
smallest key in metadata, I think we can afford to store the key count use it to provide an
estimate when we load it into the tablet.  Perhaps if we know the start key is "a" and the
end key is "z" and the tablets range is "a->m" we can just estimate 50% of the key count.
> When a bulk file fits completely in a range, the key count estimate will be accurate.

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