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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