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From "James Clampffer (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-11767) libhdfs++: SASL events should be scoped closer to usage
Date Mon, 08 May 2017 18:49:04 GMT
James Clampffer created HDFS-11767:
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             Summary: libhdfs++: SASL events should be scoped closer to usage
                 Key: HDFS-11767
                 URL: https://issues.apache.org/jira/browse/HDFS-11767
             Project: Hadoop HDFS
          Issue Type: Sub-task
            Reporter: James Clampffer
            Assignee: James Clampffer


"SASL Start" and "SASL End" are called in the SaslProtocol constructor and destructor.  SaslProtocol
is held by a shared_ptr so there's a race where the RpcConnection can be torn down and another
can be put in it's place while a callback is still holding the shared_ptr preventing "SASL
End" from being called.

This can matter a lot because both Cyrus SASL and gsasl aren't thread safe during negotiation.
 These event hooks provide a mechanism to pick up a process wide lock that guards access to
the sasl library.



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