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https://issues.apache.org/jira/browse/HIVE-5795?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shuaishuai Nie updated HIVE-5795:
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Attachment: HIVE-5795.4.patch
> 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 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.number"="1",
> "skip.footer.number"="2");
> {code}
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