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HADOOP-16707. NPE in UGI.getCurrentUser in ITestAbfsIdentityTransformer setup. #1723

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Merged
steveloughran merged 1 commit into from
Nov 20, 2019
+2 −0
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HADOOP-16707. NPE in UGI.getCurrentUser in ITestAbfsIdentityTransformer setup. #1723

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2 changes: 2 additions & 0 deletions ...-project/hadoop-common/src/main/java/org/apache/hadoop/security/UserGroupInformation.java
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Original file line number Diff line number Diff line change
Expand Up @@ -584,6 +584,7 @@ public boolean hasKerberosCredentials() {
@InterfaceAudience.Public
@InterfaceStability.Evolving
public static UserGroupInformation getCurrentUser() throws IOException {
ensureInitialized();
AccessControlContext context = AccessController.getContext();
Subject subject = Subject.getSubject(context);
if (subject == null || subject.getPrincipals(User.class).isEmpty()) {
Expand Down Expand Up @@ -670,6 +671,7 @@ public static UserGroupInformation getUGIFromSubject(Subject subject)
@InterfaceAudience.Public
@InterfaceStability.Evolving
public static UserGroupInformation getLoginUser() throws IOException {
ensureInitialized();
UserGroupInformation loginUser = loginUserRef.get();
// a potential race condition exists only for the initial creation of
// the login user. there's no need to penalize all subsequent calls
Expand Down