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From "Zheng Shao (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HIVE-699) Make lots of existing ObjectInspectors settable
Date Thu, 30 Jul 2009 23:43:15 GMT

     [ https://issues.apache.org/jira/browse/HIVE-699?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zheng Shao updated HIVE-699:
----------------------------

    Attachment: HIVE-699.2.patch

This patch fixes the test failure and added another example UDAF group_concat for HIVE-707.
Note that we are able to use UDAF (instead of GenericUDAF) to implement arbitrary-length argument
list. This may not be really efficient (since we are doing reflection), but will provide a
much easier way to write UDAF with arbitrary-length argument list.


> Make lots of existing ObjectInspectors settable
> -----------------------------------------------
>
>                 Key: HIVE-699
>                 URL: https://issues.apache.org/jira/browse/HIVE-699
>             Project: Hadoop Hive
>          Issue Type: Improvement
>            Reporter: Zheng Shao
>            Assignee: Zheng Shao
>         Attachments: HIVE-699.1.patch, HIVE-699.2.patch
>
>
> We should make JavaObjectInspectors, StandardList/Struct/MapObjectInspector, ReflectionObjectInspectors
settable.
> This will allow us to make it possible to *write* into Thrift tables, as well as ProtocolBuffer
tables in the future.
> This will also allow us to pass complex objects into UDF and receive complex objects
from UDF by using ObjectInspectorConverters.

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