[jira] [Updated] (HIVE-13275) Add a toString method to BytesRefArrayWritable

["Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-13275?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jesus Camacho Rodriguez updated HIVE-13275:
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    Target Version/s: 2.2.0  (was: 2.1.0)

> Add a toString method to BytesRefArrayWritable
> ----------------------------------------------
>
>                 Key: HIVE-13275
>                 URL: https://issues.apache.org/jira/browse/HIVE-13275
>             Project: Hive
>          Issue Type: Improvement
>          Components: File Formats, Serializers/Deserializers
>    Affects Versions: 1.1.0
>            Reporter: Harsh J
>            Assignee: Harsh J
>            Priority: Trivial
>         Attachments: HIVE-13275.000.patch
>
>
> RCFileInputFormat cannot be used externally for Hadoop Streaming today cause Streaming generally relies on the K/V pairs to be able to emit text representations (via toString()).
> Since BytesRefArrayWritable has no toString() methods, the usage of the RCFileInputFormat causes object representation prints which are not useful.
> Also, unlike SequenceFiles, RCFiles store multiple "values" per row (i.e. an array), so its important to output them in a valid/parseable manner, as opposed to choosing a simple joining delimiter over the string representations of the inner elements.
> I propose adding a standardised CSV formatting of the array data, such that users of Streaming can then parse the results in their own script. Since we have OpenCSV as a dependency already, we can make use of it for this purpose.



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