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https://issues.apache.org/jira/browse/HIVE-1638?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12922284#action_12922284
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Namit Jain commented on HIVE-1638:
----------------------------------
} else if
(TypeInfoUtils.getTypeInfoFromObjectInspector(arguments[0]).equals(
TypeInfoFactory.byteTypeInfo) &&
TypeInfoUtils.getTypeInfoFromObjectInspector(arguments[1]).equals(
TypeInfoFactory.byteTypeInfo)) {
compareType = CompareType.COMPARE_LONG;
byoi0 = (ByteObjectInspector) arguments[0];
byoi1 = (ByteObjectInspector) arguments[1];
}
It should be COMPARE_BYTE instead
> convert commonly used udfs to generic udfs
> ------------------------------------------
>
> Key: HIVE-1638
> URL: https://issues.apache.org/jira/browse/HIVE-1638
> Project: Hive
> Issue Type: Improvement
> Components: Query Processor
> Reporter: Namit Jain
> Assignee: Siying Dong
> Attachments: HIVE-1638.1.patch, HIVE-1638.2.patch, HIVE-1638.3.patch,
> HIVE-1638.4.patch
>
>
> Copying a mail from Joy:
> i did a little bit of profiling of a simple hive group by query today. i was
> surprised to see that one of the most expensive functions were in converting
> the equals udf (i had some simple string filters) to generic udfs.
> (primitiveobjectinspectorconverter.textconverter)
> am i correct in thinking that the fix is to simply port some of the most
> popular udfs (string equality/comparison etc.) to generic udsf?
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