incubator-livy git commit: [LIVY-472][SERVER] Improve the logs for fail-to-create session

Repository: incubator-livy Updated Branches: refs/heads/branch-0.5 8c9698113 -> 916255a9f [LIVY-472][SERVER] Improve the logs for fail-to-create session ## What changes were proposed in this pull request? Livy currently doesn't give a very clear log about the fail-to-create session, it only

incubator-livy git commit: [LIVY-472][SERVER] Improve the logs for fail-to-create session

Repository: incubator-livy Updated Branches: refs/heads/master 6f1756cff -> ca4cad229 [LIVY-472][SERVER] Improve the logs for fail-to-create session ## What changes were proposed in this pull request? Livy currently doesn't give a very clear log about the fail-to-create session, it only says