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From "Navis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-4732) Speed up AvroSerde by checking hashcodes instead of equality
Date Mon, 24 Jun 2013 05:53:20 GMT

    [ https://issues.apache.org/jira/browse/HIVE-4732?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13691714#comment-13691714
] 

Navis commented on HIVE-4732:
-----------------------------

Schema in avro-1.7.1 which is in hive-0.11.0 compares hashCodes first. This issue might be
regarded as resolved.
                
> Speed up AvroSerde by checking hashcodes instead of equality
> ------------------------------------------------------------
>
>                 Key: HIVE-4732
>                 URL: https://issues.apache.org/jira/browse/HIVE-4732
>             Project: Hive
>          Issue Type: Improvement
>          Components: Serializers/Deserializers
>    Affects Versions: 0.11.0, 0.12.0
>            Reporter: Mark Wagner
>            Assignee: Mark Wagner
>             Fix For: 0.11.1, 0.12.0
>
>         Attachments: HIVE-4732.1.patch
>
>
> The AvroSerde spends a significant amount of time checking schema equality. Changing
to compare hashcodes (which can be computed once then reused) will improve performance.

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