[jira] [Assigned] (HIVE-21193) Support LZO Compression with CombineHiveInputFormat

["BELUGA BEHR (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-21193?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

BELUGA BEHR reassigned HIVE-21193:
----------------------------------

    Assignee: BELUGA BEHR

> Support LZO Compression with CombineHiveInputFormat
> ---------------------------------------------------
>
>                 Key: HIVE-21193
>                 URL: https://issues.apache.org/jira/browse/HIVE-21193
>             Project: Hive
>          Issue Type: Improvement
>          Components: Compression
>    Affects Versions: 4.0.0, 3.2.0
>            Reporter: BELUGA BEHR
>            Assignee: BELUGA BEHR
>            Priority: Major
>
> In regards to LZO compression with Hive...
> https://cwiki.apache.org/confluence/display/Hive/LanguageManual+LZO
> It does not work out of the box if there are {{.lzo.index}} files present.  As I understand it, this is because of the default Hive input format {{CombineHiveInputFormat}} does not handle this correctly.  It does not like that there are a mix of data files and some index files, it lumps them altogether when making the combined splits and Mappers fail when they try to process the {{.lzo.index}} files as data.  When using the original {{HiveInputFormat}}, it correctly identifies the {{.lzo.index}} files because it considers each file individually.
> Allow {{CombineHiveInputFormat}} to short-circuit LZO files and to not combine them.



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)