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From "Prasanth J (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (PIG-2831) MR-Cube implementation (Distributed cubing for holistic measures)
Date Tue, 04 Sep 2012 02:38:07 GMT

     [ https://issues.apache.org/jira/browse/PIG-2831?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Prasanth J updated PIG-2831:
----------------------------

    Attachment: PIG-2831.5.git.patch
    
> MR-Cube implementation (Distributed cubing for holistic measures)
> -----------------------------------------------------------------
>
>                 Key: PIG-2831
>                 URL: https://issues.apache.org/jira/browse/PIG-2831
>             Project: Pig
>          Issue Type: Sub-task
>            Reporter: Prasanth J
>            Assignee: Prasanth J
>         Attachments: PIG-2831.1.git.patch, PIG-2831.2.git.patch, PIG-2831.3.git.patch,
PIG-2831.4.git.patch, PIG-2831.5.git.patch
>
>
> Implementing distributed cube materialization on holistic measure based on MR-Cube approach
as described in http://arnab.org/files/mrcube.pdf. 
> Primary steps involved:
> 1) Identify if the measure is holistic or not
> 2) Determine algebraic attribute (can be detected automatically for few cases, if automatic
detection fails user should hint the algebraic attribute)
> 3) Modify MRPlan to insert a sampling job which executes naive cube algorithm and generates
annotated cube lattice (contains large group partitioning information)
> 4) Modify plan to distribute annotated cube lattice to all mappers using distributed
cache
> 5) Execute actual cube materialization on full dataset
> 6) Modify MRPlan to insert a post process job for combining the results of actual cube
materialization job
> 7) OOM exception handling

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