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https://issues.apache.org/jira/browse/HIVE-675?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12753897#action_12753897
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He Yongqiang commented on HIVE-675:
-----------------------------------
>>if approach A for HIVE-584 is chosen then shouldn't the current patch work
>>without any changes?
yes, it will work without changes.
But Hive is now a thread local obj itself, so just as Zheng said, we don't need
to protect the current database with another level of ThreadLocal.
> add database/scheme support Hive QL
> -----------------------------------
>
> Key: HIVE-675
> URL: https://issues.apache.org/jira/browse/HIVE-675
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
> Reporter: Prasad Chakka
> Assignee: He Yongqiang
> Attachments: hive-675-2009-9-7.patch, hive-675-2009-9-8.patch
>
>
> Currently all Hive tables reside in single namespace (default). Hive should
> support multiple namespaces (databases or schemas) such that users can create
> tables in their specific namespaces. These name spaces can have different
> warehouse directories (with a default naming scheme) and possibly different
> properties.
> There is already some support for this in metastore but Hive query parser
> should have this feature as well.
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