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From "Thejas M Nair (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-5795) Hive should be able to skip header and footer rows when reading data file for a table
Date Fri, 03 Jan 2014 19:57:52 GMT

     [ https://issues.apache.org/jira/browse/HIVE-5795?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Thejas M Nair updated HIVE-5795:
--------------------------------

    Resolution: Fixed
        Status: Resolved  (was: Patch Available)

Patch committed to trunk. Thanks for the contribution [~shuainie] !
[~leftylev] [~shuainie] Should we create a followup jira for adding documentation to wiki
?


> Hive should be able to skip header and footer rows when reading data file for a table
> -------------------------------------------------------------------------------------
>
>                 Key: HIVE-5795
>                 URL: https://issues.apache.org/jira/browse/HIVE-5795
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Shuaishuai Nie
>            Assignee: Shuaishuai Nie
>         Attachments: HIVE-5795.1.patch, HIVE-5795.2.patch, HIVE-5795.3.patch, HIVE-5795.4.patch,
HIVE-5795.5.patch
>
>
> Hive should be able to skip header and footer lines when reading data file from table.
In this way, user don't need to processing data which generated by other application with
a header or footer and directly use the file for table operations.
> To implement this, the idea is adding new properties in table descriptions to define
the number of lines in header and footer and skip them when reading the record from record
reader. An DDL example for creating a table with header and footer should be like this:
> {code}
> Create external table testtable (name string, message string) row format delimited fields
terminated by '\t' lines terminated by '\n' location '/testtable' tblproperties ("skip.header.line.count"="1",
"skip.footer.line.count"="2");
> {code}



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