zeppelin git commit: ZEPPELIN-3332 Zeppelin login fails with NPE if ldapRealm.authorizationEnabled is not set true

Repository: zeppelin Updated Branches: refs/heads/branch-0.8 380a92768 -> d3de51562 ZEPPELIN-3332 Zeppelin login fails with NPE if ldapRealm.authorizationEnabled is not set true ### What is this PR for? Simply fixes NPE by checking for null ### What type of PR is it? Bug Fix ### What is the

zeppelin git commit: ZEPPELIN-3332 Zeppelin login fails with NPE if ldapRealm.authorizationEnabled is not set true

Repository: zeppelin Updated Branches: refs/heads/master 7a9572d67 -> 685eb9249 ZEPPELIN-3332 Zeppelin login fails with NPE if ldapRealm.authorizationEnabled is not set true ### What is this PR for? Simply fixes NPE by checking for null ### What type of PR is it? Bug Fix ### What is the Jir

zeppelin git commit: Hotfix: ambiguous reference to overloaded definition

Repository: zeppelin Updated Branches: refs/heads/master 881846364 -> 7a9572d67 Hotfix: ambiguous reference to overloaded definition ### What is this PR for? Minor bugfix on Zeppelin build from sources ### What type of PR is it? Bug Fix ### What is the Jira issue? * https://issues.apache.org

zeppelin git commit: [HOTFIX] Fix ClassCastException when reading interpreter.json

Repository: zeppelin Updated Branches: refs/heads/master 1add74b4b -> 881846364 [HOTFIX] Fix ClassCastException when reading interpreter.json ### What is this PR for? Fix the bug reported in https://github.com/apache/zeppelin/commit/b49b3f46f91d06c4d497f8f11cbc334fd480e539#commitcomment-28397