[jira] Commented: (HIVE-24) support for reading binary data from flat files

["Ashish Thusoo (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-24?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12647312#action_12647312 ] 

Ashish Thusoo commented on HIVE-24:
-----------------------------------

I think this patch is already commited. Is there anything else needed on this. Can we mark this as resolved?

> support for reading binary data from flat files
> -----------------------------------------------
>
>                 Key: HIVE-24
>                 URL: https://issues.apache.org/jira/browse/HIVE-24
>             Project: Hadoop Hive
>          Issue Type: Bug
>            Reporter: Joydeep Sen Sarma
>             Fix For: 0.20.0
>
>         Attachments: FlatFileReader.java, HADOOP-4065.0.txt, HADOOP-4065.1.txt, HADOOP-4065.1.txt, HADOOP-4065.2.txt, ThriftFlatFile.java
>
>
> 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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