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https://issues.apache.org/jira/browse/HIVE-3072?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13440644#comment-13440644
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Carl Steinbach commented on HIVE-3072:
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@Namit: I'll make another pass through the patch later today. One thing I'd
like to request is that we add an internal configuration property that disables
the new DDL by default. We can remove this once the rest of the DML changes get
committed, but in the meantime I don't think it makes sense to make the DDL
visible to users. So to recap, I'm proposing the following:
* Add a configuration property named "hive.internal.ddl.list.bucketing.enable"
and set the default value to false.
* Add a comment in HiveConf explaining that this will be removed once the rest
of the DML changes are committed.
* Do *not* add this property to hive-default.xml.template since we don't want
users messing with it.
* Throw an error if the user tries to use the DDL with
hive.internal.ddl.list.bucketing.enable set to false.
> Hive List Bucketing - DDL support
> ---------------------------------
>
> Key: HIVE-3072
> URL: https://issues.apache.org/jira/browse/HIVE-3072
> Project: Hive
> Issue Type: New Feature
> Components: SQL
> Reporter: Gang Tim Liu
> Assignee: Gang Tim Liu
> Attachments: HIVE-3072.patch, HIVE-3072.patch.1, HIVE-3072.patch.2,
> HIVE-3072.patch.3, HIVE-3072.patch.4, HIVE-3072.patch.5
>
>
> If a hive table column has skewed keys, query performance on non-skewed key
> is always impacted. Hive List Bucketing feature will address it:
> https://cwiki.apache.org/Hive/listbucketing.html
> This jira issue will track DDL change for the feature. It's for both single
> skewed column and multiple columns.
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