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Posted to common-issues@hadoop.apache.org by "Tao Jie (JIRA)" <ji...@apache.org> on 2018/04/27 02:38:00 UTC

[jira] [Created] (HADOOP-15419) Should not obtain delegationTokens from all namenodes when using ViewFS

Tao Jie created HADOOP-15419:
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             Summary: Should not obtain delegationTokens from all namenodes when using ViewFS
                 Key: HADOOP-15419
                 URL: https://issues.apache.org/jira/browse/HADOOP-15419
             Project: Hadoop Common
          Issue Type: Bug
    Affects Versions: 3.0.2
            Reporter: Tao Jie


Today when submit a job to a viewfs cluster, the client will try to obtain delegation token from all namenodes under the viewfs while only one namespace is actually used in this job. It would create many unnecessary rpc call to the whole cluster.
In viewfs situation, we can just obtain delegation token from specific namenode rather than all namenodes.




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