GitHub user yhuai opened a pull request:
https://github.com/apache/spark/pull/11349
[SPARK-13454] [SQL] Allow users to drop a table with a name starting with
an underscore.
## What changes were proposed in this pull request?
This change adds a workaround to allow users to drop a table with a name
starting with an underscore. Without this patch, we can create such a table,
but we cannot drop it. The reason is that Hive's parser unquote an quoted
identifier. So, when we issue a drop table command to Hive, a table name
starting with an underscore is actually not quoted. Then, Hive will complain
about it because it does not support a table name starting with an underscore
without using backticks (underscores are allowed as long as it is not the first
char though).
## How was this patch tested?
Add a test to make sure we can drop a table with a name starting with an
underscore.
https://issues.apache.org/jira/browse/SPARK-13454
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/yhuai/spark fixDropTable
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/11349.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 #11349
----
commit 70cfee0f4f13225b307098eb41457fb3cb671c39
Author: Yin Huai <[email protected]>
Date: 2016-02-24T18:40:51Z
Allow users to drop a table with a name starting with underscore.
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