[HADOOP-17239] ViewFs#getDelegationTokens should include fallback fs tokens as well.

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: viewfs
• Assignee: Unassigned
• Reporter: Uma Maheswara Rao G
• Created: 02/Sep/20 02:40
• Updated: 02/Sep/20 15:25

Description

 

getDelegationTokens API is using getMountPoints API and return tokens by iterating over.

But getMountPoints will not include fallbackfs. So, it will miss the tokens from fallback fs.

@Override
public List<Token<?>> getDelegationTokens(String renewer) throws IOException {
 List<InodeTree.MountPoint<AbstractFileSystem>> mountPoints = 
 fsState.getMountPoints();
 int initialListSize = 0;
 for (InodeTree.MountPoint<AbstractFileSystem> im : mountPoints) {
 initialListSize += im.target.targetDirLinkList.length; 
 }
 List<Token<?>> result = new ArrayList<Token<?>>(initialListSize);
 for ( int i = 0; i < mountPoints.size(); ++i ) {
 List<Token<?>> tokens = 
 mountPoints.get(i).target.targetFileSystem.getDelegationTokens(renewer);
 if (tokens != null) {
 result.addAll(tokens);
 }
 }
 return result;
}