shanyu opened a new pull request #187: LIVY-617: Livy session leak on Yarn when creating session duplicated names URL: https://github.com/apache/incubator-livy/pull/187 ## What changes were proposed in this pull request? When creating a session with duplicated name, instead of throw exception in SessionManager.register() method, we should stop the session. Otherwise the session driver process will keep running and end up creating a leaked Yarn application. https://issues.apache.org/jira/browse/LIVY-617 ## How was this patch tested? This is just a simple fix and verified with manual end to end test.
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