GitHub user gatorsmile opened a pull request: https://github.com/apache/spark/pull/14801
[SPARK-17234] [SQL] Table Existence Checking when Index Table with the Same Name Exists ### What changes were proposed in this pull request? Hive Index tables are not supported by Spark SQL. Thus, we issue an exception when users try to access Hive Index tables. When the internal function `tableExists` tries to access Hive Index tables, it always gets the same error message: ```Hive index table is not supported```. This message could be confusing to users, since their SQL operations could be completely unrelated to Hive Index tables. For example, when users try to alter a table to a new name and there exists an index table with the same name, the expected exception should be a `TableAlreadyExistsException`. This PR made the following changes: - Introduced a new `AnalysisException` type: `SQLFeatureNotSupportedException`. When users try to access an `Index Table`, we will issue a `SQLFeatureNotSupportedException`. - `tableExists` returns `true` when hitting a `SQLFeatureNotSupportedException` and the feature is `Hive index table`. - Add a checking `requireTableNotExists` for `SessionCatalog`'s `createTable` API; otherwise, the current implementation relies on the Hive's internal checking. ### How was this patch tested? Added a test case You can merge this pull request into a Git repository by running: $ git pull https://github.com/gatorsmile/spark tableExists Alternatively you can review and apply these changes as the patch at: https://github.com/apache/spark/pull/14801.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 #14801 ---- commit 1af428b68c4341192bf8f66af7c434a7b89be61d Author: gatorsmile <gatorsm...@gmail.com> Date: 2016-08-25T06:26:00Z fix commit 664d6f1caa9b3d62eafbddb292991def722910ae Author: gatorsmile <gatorsm...@gmail.com> Date: 2016-08-25T06:34:16Z improve test cases commit c400c5292a32549cea80861adfaefeb41f4d90b3 Author: gatorsmile <gatorsm...@gmail.com> Date: 2016-08-25T07:12:57Z fix ---- --- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. --- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org