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  1. Hadoop Common
  2. HADOOP-17417

Reduce UGI overhead in token ops

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      Description

      DelegationTokenIdentifier has a ugiCache but AbstractDelegationTokenManager calls a static method getRemoteUser() which would bypass the cache.

      Performance analysis of the KMS revealed the RPC server layer is creating many and redundant UGI instances.. UGIs are not cheap to instantiate, require synchronization, and waste memory. Reducing instantiations will improve the performance of the ipc readers.

       

       

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            • Assignee:
              ahussein Ahmed Hussein
              Reporter:
              ahussein Ahmed Hussein

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