GitHub user lvicentesanchez opened a pull request: https://github.com/apache/zeppelin/pull/2567
[ZEPPELIN-2900] Close connection on getUserList ### What is this PR for? This PR fixed a JDBC connection leak on `GetUserList.getUserList` when the Shiro Realm is a JdbcRealm. After a while, it's not possible to even login into zeppelin. ### What type of PR is it? Bug Fix ### Todos N/A ### What is the Jira issue? [ZEPPELIN-2900](https://issues.apache.org/jira/browse/ZEPPELIN-2900) ### How should this be tested? In order to reproduce the bug follow this steps: 1. Configure zeppelin to use a JdbcRealm for authentication with a low number of connections in the connection pool. 2. Login into zeppelin and open a notebook. 3. Open the permissions form of the notebook. 4. Try to add several users to the owners list (more than the number of connections of the connection pool. ### Screenshots (if appropriate) ### Questions: * Does the licenses files need update? No. * Is there breaking changes for older versions? No that I'm aware. * Does this needs documentation? No. You can merge this pull request into a Git repository by running: $ git pull https://github.com/bigcentech/zeppelin bugfix/zeppelin-2900 Alternatively you can review and apply these changes as the patch at: https://github.com/apache/zeppelin/pull/2567.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 #2567 ---- commit da24668aafed9135a360ade5be195c9eccccc550 Author: Luis Vicente <langel.vice...@gmail.com> Date: 2017-09-05T10:59:56Z [ZEPPELIN-2900] Close connection on getUserList ---- ---