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From "Carl Steinbach (JIRA)" <>
Subject [jira] Updated: (HIVE-24) support for reading binary data from flat files
Date Mon, 24 Jan 2011 21:35:48 GMT


Carl Steinbach updated HIVE-24:

      Component/s: Serializers/Deserializers
    Fix Version/s: 0.3.0

> support for reading binary data from flat files
> -----------------------------------------------
>                 Key: HIVE-24
>                 URL:
>             Project: Hive
>          Issue Type: Bug
>          Components: Serializers/Deserializers
>            Reporter: Joydeep Sen Sarma
>             Fix For: 0.3.0
>         Attachments:, HADOOP-4065.0.txt, HADOOP-4065.1.txt, HADOOP-4065.1.txt,
> like textinputformat - looking for a concrete implementation to read binary records from
a flat file (that may be compressed).
> it's assumed that hadoop can't split such a file. so the inputformat can set splittable
to false.
> tricky aspects are:
> - how to know what class the file contains (has to be in a configuration somewhere).
> - how to determine EOF (would be nice if hadoop can determine EOF and not have the deserializer
throw an exception  (which is hard to distinguish from a exception due to corruptions?)).
this is easy for non-compressed streams - for compressed streams - DecompressorStream has
a useful looking getAvailable() call - except the class is marked package private.

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