commit 43faf0086ff8d329838930df93dd4bd52ba8b22f
author Jitendra Pandey <jitendra@apache.org> Mon Jan 01 21:51:48 2018 -0800
committer Wei-Chiu Chuang <weichiu@apache.org> Thu Jan 18 21:09:26 2018 -0800
tree 6eff10da3b7f98811ec69655f6f7c1d377dd32b9
parent 0a8a799884f5e1e9cd6cca9946f98e869a33776c

HADOOP-15143. NPE due to Invalid KerberosTicket in UGI. Contributed by Mukul Kumar Singh.

(cherry picked from commit cb60c05c3aff762c39d7d81df9a7b6e071acb181)
(cherry picked from commit dd1de1ea373a2afa9bd475cccd655b9d74710f42)

Conflicts:
	hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/UserGroupInformation.java
(cherry picked from commit 7ca1d96b4facf5a9d8700e8e1879abfbb0716cb7)

Conflicts:
	hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/UserGroupInformation.java
(cherry picked from commit 995e059077ef843400281e08054d8740cf38a970)