xiaoyuyao commented on a change in pull request #526: HDDS-1183. Override 
getDelegationToken API for OzoneFileSystem. Contr…
URL: https://github.com/apache/hadoop/pull/526#discussion_r261722027
 
 

 ##########
 File path: 
hadoop-ozone/ozonefs/src/main/java/org/apache/hadoop/fs/ozone/OzoneFileSystem.java
 ##########
 @@ -669,6 +676,12 @@ public Path getWorkingDirectory() {
     return workingDir;
   }
 
+  @Override
+  public Token<?> getDelegationToken(String renewer) throws IOException {
+    return securityEnabled? adapter.getDelegationToken(renewer) :
+        super.getDelegationToken(renewer);
 
 Review comment:
   bq. "should fetch DT from both", that is handled by addDelegationTokens() in 
the TokenIssuer.
   Here we follow the FileSystem contract to return om delegation token if 
ozone security is enabled otherwise null as speced in 
FileSystem#getDelegationToken().

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