GitHub user adrian-wang opened a pull request:
https://github.com/apache/spark/pull/15011
[SPARK-17122][SQL]support drop current database
## What changes were proposed in this pull request?
In Spark 1.6 and earlier, we can drop the database we are using. In Spark
2.0, native implementation prevent us from dropping current database, which may
break some old queries. This PR would re-enable the feature and set current
database to default instead.
## How was this patch tested?
one new unit test in `SessionCatalogSuite`.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/adrian-wang/spark dropcurrent
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/15011.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #15011
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commit 551b27252c0f5fb0de6d0958407cebac0b19ba64
Author: Daoyuan Wang <daoyuan.w...@intel.com>
Date: 2016-09-08T06:56:32Z
support drop current database
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