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HADOOP-14361. Azure: NativeAzureFileSystem.getDelegationToken() call fails sometimes when invoked concurrently. Contributed by Santhosh G Nayak

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This commit is contained in:
Mingliang Liu 2017-05-10 15:05:11 -07:00
parent 5cb6e3e082
commit eed731496f
1 changed files with 1 additions and 1 deletions
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hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azure/NativeAzureFileSystem.java
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@ -2968,7 +2968,7 @@ public synchronized void close() throws IOException {
* @throws IOException thrown when getting the current user. * @throws IOException thrown when getting the current user.
*/ */
@Override @Override
public Token<?> getDelegationToken(final String renewer) throws IOException { public synchronized Token<?> getDelegationToken(final String renewer) throws IOException {
if (kerberosSupportEnabled) { if (kerberosSupportEnabled) {
try { try {
final UserGroupInformation ugi = UserGroupInformation.getCurrentUser(); final UserGroupInformation ugi = UserGroupInformation.getCurrentUser();