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From "Xuefu Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-8205) Using strings in group type fails in ParquetSerDe
Date Tue, 23 Sep 2014 16:00:35 GMT

    [ https://issues.apache.org/jira/browse/HIVE-8205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14144945#comment-14144945
] 

Xuefu Zhang commented on HIVE-8205:
-----------------------------------

Patch looks good to me. Reloaded the patch to have another test run.

> Using strings in group type fails in ParquetSerDe
> -------------------------------------------------
>
>                 Key: HIVE-8205
>                 URL: https://issues.apache.org/jira/browse/HIVE-8205
>             Project: Hive
>          Issue Type: Bug
>          Components: Serializers/Deserializers
>            Reporter: Mohit Sabharwal
>            Assignee: Mohit Sabharwal
>              Labels: parquet
>         Attachments: HIVE-8205.1.patch, HIVE-8205.1.patch, HIVE-8205.patch
>
>
> In HIVE-7735, schema info was plumbed to ETypeConverter to disambiguate between hive
Char, Varchar and String types, which are all represented as PrimitiveType "binary" and OriginalType
"utf8" in parquet.
> However, this does not work for parquet nested types (that map to hive Array, Map, etc.)
containing these values, because schema lookup for nested values was not implemented.  It's
also non-trivial to do that in the current parquet serde implementation. Instead of plumbing
in the schema, we should convert 
> these types to the same Text writeable and let the object inspectors handle the final
conversion.



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