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https://issues.apache.org/jira/browse/MADLIB-1117?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Frank McQuillan resolved MADLIB-1117.
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Resolution: Fixed
> Add "columns to process per pass" as an optional param for summary()
> --------------------------------------------------------------------
>
> Key: MADLIB-1117
> URL: https://issues.apache.org/jira/browse/MADLIB-1117
> Project: Apache MADlib
> Issue Type: Improvement
> Components: Module: Sketch-based Estimators
> Reporter: Frank McQuillan
> Assignee: Rahul Iyer
> Priority: Minor
> Fix For: v1.12
>
>
> Context
> The summary() function
> http://madlib.incubator.apache.org/docs/latest/group__grp__summary.html
> currently processes 15 columns per pass to keep memory usage below 1 GB
> limit. This is a somewhat arbitrary limit since memory usage depends on many
> things including data set, and which params in summary() are set. If more
> columns per pass could be used, summary() would run faster.
> Story
> As a MADlib developer, I want to add "columns to process per pass" as an
> optional param for summary() function. Default: use 15 columns (which is the
> current setting). Suggested param name: "columns_per_pass" though if you
> have a better name, that's fine.
> Acceptance
> 1) Add new optional parameter and update docs. Please add a note so it is
> clear what this control does.
> 2) Write and pass tests.
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