[jira] [Commented] (HIVE-16085) get path-to-alias, path-to-work etc recursively in Hive

["Sergey Shelukhin (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-16085?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15891543#comment-15891543 ] 

Sergey Shelukhin commented on HIVE-16085:
-----------------------------------------

[~ashutoshc] fyi; you might be the only expert in such obscure matters :) let me know if you have any input

> get path-to-alias, path-to-work etc recursively in Hive
> -------------------------------------------------------
>
>                 Key: HIVE-16085
>                 URL: https://issues.apache.org/jira/browse/HIVE-16085
>             Project: Hive
>          Issue Type: Task
>            Reporter: Sergey Shelukhin
>            Assignee: Sergey Shelukhin
>         Attachments: HIVE-16085.WIP.patch
>
>
> Sometimes, we don't get correct alias/part desc/etc. from a split path because the path has subdirectories - e.g. in HIVE-15870 (for MM tables).
> We have utility methods to work around that by getting the partdesc recursively from the parents of a path, but they are not applied consistently; I suspect people add calls to these methods after they discover some particular codepath is broken. Perhaps we should find such places proactively for path-to-part, path-to-work, and path-to-alias maps.
> This can happen much more with MM tables, but can also happen for any recursive-path cases (incl. just a regular recursive path read enabled via an MR config).



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