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From "Carl Steinbach (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-357) Add order-sensitive and order-insensitive hashing aggregation functions (UDAF)
Date Tue, 05 Apr 2011 23:22:06 GMT

     [ https://issues.apache.org/jira/browse/HIVE-357?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Carl Steinbach updated HIVE-357:
--------------------------------

    Component/s: UDF

> Add order-sensitive and order-insensitive hashing aggregation functions (UDAF)
> ------------------------------------------------------------------------------
>
>                 Key: HIVE-357
>                 URL: https://issues.apache.org/jira/browse/HIVE-357
>             Project: Hive
>          Issue Type: New Feature
>          Components: Query Processor, UDF
>            Reporter: Zheng Shao
>            Assignee: Zheng Shao
>
> In order to test whether a new version of Hive produces exactly the same result as an
order version, we usually want to run a bunch of big queries as well as small queries.
> It's hard to compare the result of big queries, but if we have a hashing aggregation
function, we can just aggregate the result of big queries and compare the single number.

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