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https://issues.apache.org/jira/browse/HIVE-2126?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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He Yongqiang updated HIVE-2126:
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Status: Patch Available (was: Open)
> Hive's symlink text input format should be able to work with
> ComineHiveInputFormat
> ----------------------------------------------------------------------------------
>
> Key: HIVE-2126
> URL: https://issues.apache.org/jira/browse/HIVE-2126
> Project: Hive
> Issue Type: Improvement
> Reporter: He Yongqiang
> Assignee: He Yongqiang
> Attachments: HIVE-2126.1.patch
>
>
> at compile time, if a partition's file format is SymlinkTextInputFormat, will
> replace the symlink path with paths in the symlink file. This way, it will
> work with Hive's HiveCombineFileInputFormat.
> The reason we are doing it at compile time is because:
> 1) At run time, the input path is not only used to get record reader, but
> also used for hive to get aliases and thus operator tree. But the
> CombineHiveInputFormat can have multiple paths for each split, and when
> switching paths, it also set the job with new input file name. So it always
> require a real input path name. Can not fake it.
> 2) if write a new input format, it will require a lot of duplication work
> with existing CombineHiveInputFormat.
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