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https://issues.apache.org/jira/browse/HIVE-4475?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gunther Hagleitner updated HIVE-4475:
-------------------------------------
Attachment: HIVE-4475.2.patch
I like the idea of the config knob for this [~owen.omalley]. This is safer and
more flexible. I do think most cases benefit from LazyBinary, but you make a
good point for why ppl might want to choose otherwise. Also, it actually makes
the patch simpler.
> Switch RCFile default to LazyBinaryColumnarSerDe
> ------------------------------------------------
>
> Key: HIVE-4475
> URL: https://issues.apache.org/jira/browse/HIVE-4475
> Project: Hive
> Issue Type: Bug
> Reporter: Gunther Hagleitner
> Assignee: Gunther Hagleitner
> Attachments: HIVE-4475.1.patch, HIVE-4475.2.patch
>
>
> For most workloads it seems LazyBinaryColumnarSerDe (binary) will perform
> better than ColumnarSerDe (text). Not sure why ColumnarSerDe is the default,
> but my guess is, that's for historical reasons. I suggest switching the
> default.
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