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https://issues.apache.org/jira/browse/HIVE-4732?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13697052#comment-13697052
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Mark Wagner commented on HIVE-4732:
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I double checked and I am using the latest release (1.7.4) for my benchmarks.
Although the equals() method uses hashcode to quickly discard unequal schemas,
it still does a full recursive walk of the schema to make sure all the nodes
are equal, so I think this patch is still a necessary change.
> 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
> Reporter: Mark Wagner
> Assignee: Mark Wagner
> 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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