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Posted to dev@pig.apache.org by "Prasanth J (JIRA)" <ji...@apache.org> on 2012/08/16 07:27:38 UTC
[jira] [Updated] (PIG-2831) MR-Cube implementation (Distributed
cubing for holistic measures)
[ https://issues.apache.org/jira/browse/PIG-2831?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Prasanth J updated PIG-2831:
----------------------------
Attachment: PIG-2831.1.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
>
>
> 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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