[jira] [Resolved] (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:all-tabpanel ]

Pat Ferrel resolved MAHOUT-1568.
--------------------------------
       Resolution: Implemented
    Fix Version/s: 0.10.0

Created IntexedDataset, which has readers and writers for text delimited formats. Supports reading by row or element and writing by row.

IndexedDataset is a step along the road to DataFrames and so may be refactored when those are added.

> 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
>              Labels: scala, spark
>             Fix For: 0.10.0
>
>
> 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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