[jira] [Commented] (MAHOUT-1568) Build an I/O model that can replace sequence files for import/export

["Pat Ferrel (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MAHOUT-1568?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14046428#comment-14046428 ] 

Pat Ferrel commented on MAHOUT-1568:
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the code to read/write text delimited files is in MAHOUT-1541, it has a set of abstract classes and traits for I/O and implements text delimited read of tuples into a drm, and output of a drm into a text delimited format.

to futher this Jira a version of "rowsimilarity" will be created to read in a text delimited drm as well as output one. 

> Build an I/O model that can replace sequence files for import/export
> --------------------------------------------------------------------
>
>                 Key: MAHOUT-1568
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1568
>             Project: Mahout
>          Issue Type: New Feature
>          Components: CLI
>         Environment: Scala, Spark
>            Reporter: Pat Ferrel
>            Assignee: Pat Ferrel
>
> Implement mechanisms to read and write data from/to flexible stores. These will support tuples streams and drms but with extensions that allow keeping user defined values for IDs. The mechanism in some sense can replace Sequence Files for import/export and will make the operation much easier for the user. In many cases directly consuming their input files.
> Start with text delimited files for input/output in the Spark version of ItemSimilarity
> A proposal is running with ItemSimilarity on Spark and is documented on the github wiki here: https://github.com/pferrel/harness/wiki
> Comments are appreciated



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