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https://issues.apache.org/jira/browse/HIVE-108?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Carl Steinbach updated HIVE-108:
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Fix Version/s: 0.3.0
> sampling does not use internal column name
> -------------------------------------------
>
> Key: HIVE-108
> URL: https://issues.apache.org/jira/browse/HIVE-108
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Reporter: Namit Jain
> Assignee: Namit Jain
> Fix For: 0.3.0
>
> Attachments: patch.txt
>
>
> sampling does not use internal column name, it uses column table name instead
> - which will not work in case there is any operator between table
> scan and sampling, which is possible with column pruning.
> The following test breaks:
> (assuming srcbucket has more than 1 column: in this case 2 columns: key and
> value)
> -- no input pruning, sample filter
> EXPLAIN
> SELECT s.key
> FROM srcbucket TABLESAMPLE (BUCKET 1 OUT OF 5 on key) s;
> SELECT s.key
> FROM srcbucket TABLESAMPLE (BUCKET 1 OUT OF 5 on key) s;
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