[jira] [Created] (HADOOP-13127) Correctly cache delegation tokens in KMSClientProvider

["Xiao Chen (JIRA)" <ji...@apache.org>]

Xiao Chen created HADOOP-13127:
----------------------------------

             Summary: Correctly cache delegation tokens in KMSClientProvider
                 Key: HADOOP-13127
                 URL: https://issues.apache.org/jira/browse/HADOOP-13127
             Project: Hadoop Common
          Issue Type: Bug
          Components: security
    Affects Versions: 2.6.1
            Reporter: Xiao Chen
            Assignee: Xiao Chen


In the initial implementation of HADOOP-10770, the authToken is updated with delegation tokens during {{KMSClientProvider#addDelegationTokens }} in the following line:
{code}
Token<?> token = authUrl.getDelegationToken(url, authToken, renewer);
{code}

HADOOP-11482 is a good fix to handle UGI issue, but has a side effect in the following code:
{code}
public Token<?> run() throws Exception {
  // Not using the cached token here.. Creating a new token here
  // everytime.
  return authUrl.getDelegationToken(url,
    new DelegationTokenAuthenticatedURL.Token(), renewer, doAsUser);
}
{code}

IIUC, we should do {{setDelegationToken}} on the authToken here to cache it.



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