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Posted to dev@datafu.apache.org by "Ido Hadanny (JIRA)" <ji...@apache.org> on 2015/04/28 07:37:05 UTC

[jira] [Updated] (DATAFU-91) pig version of HyperLogLog estimator should be Algebraic and use combiners

     [ https://issues.apache.org/jira/browse/DATAFU-91?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ido Hadanny updated DATAFU-91:
------------------------------
    Attachment: hyper-log-log-algebraic.diff

Attaching patch, created and tested by iflax and ihadanny

> pig version of HyperLogLog estimator should be Algebraic and use combiners
> --------------------------------------------------------------------------
>
>                 Key: DATAFU-91
>                 URL: https://issues.apache.org/jira/browse/DATAFU-91
>             Project: DataFu
>          Issue Type: Bug
>    Affects Versions: 1.3.0
>            Reporter: Ido Hadanny
>            Priority: Minor
>         Attachments: hyper-log-log-algebraic.diff
>
>
> Matt: I don't remember if there was a particular reason I didn't implement this as AlgebraicEvalFunc. It seems like it could be. I believe the Java MapReduce version leverages the combiner. If you want to try making this Algebraic we would be happy to accept a patch :)



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