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Posted to common-issues@hadoop.apache.org by "Daryn Sharp (JIRA)" <ji...@apache.org> on 2013/12/17 19:58:08 UTC

[jira] [Created] (HADOOP-10173) Remove UGI from DIGEST-MD5 SASL server creation

Daryn Sharp created HADOOP-10173:
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             Summary: Remove UGI from DIGEST-MD5 SASL server creation
                 Key: HADOOP-10173
                 URL: https://issues.apache.org/jira/browse/HADOOP-10173
             Project: Hadoop Common
          Issue Type: Improvement
          Components: ipc
    Affects Versions: 0.23.0, 3.0.0, 2.4.0
            Reporter: Daryn Sharp
            Assignee: Daryn Sharp
            Priority: Critical


Instantiation of SASL server instances within the readers threads is performed within a {{UGI.getCurrentUser().doAs}}.  {{getCurrentUser}} is synchronized, and doAs also degrades performance.  GSSAPI (kerberos) requires instantiation within a doAs, but DIGEST-MD5 (token) does not.



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