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[HADOOP-9698] RPCv9 client must honor server's SASL negotiate response - Hadoop - [issue]
...As of HADOOP-9421, a RPCv9 server will advertise its authentication methods.  This is meant to support features such as IP failover, better token selection, and interoperability in a he...
http://issues.apache.org/jira/browse/HADOOP-9698    Author: Daryn Sharp, 2014-01-28, 23:37
[HADOOP-10300] Allowed deferred sending of call responses - Hadoop - [issue]
...RPC handlers currently do not return until the RPC call completes and response is sent, or a partially sent response has been queued for the responder.  It would be useful for a proxy m...
http://issues.apache.org/jira/browse/HADOOP-10300    Author: Daryn Sharp, 2014-01-28, 19:57
Re: HDFS Federation address performance issue - Hadoop - [mail # user]
...Hi Anfernee,You will achieve improved performance with federation only if you stripe files across the multiple NNs.  Federation basically shares DN storage with multiple NNs with the ex...
   Author: Daryn Sharp, 2014-01-28, 18:54
[HADOOP-9363] AuthenticatedURL will NPE if server closes connection - Hadoop - [issue]
...A NPE occurs if the server unexpectedly closes the connection for an AuthenticatedURL w/o sending a response....
http://issues.apache.org/jira/browse/HADOOP-9363    Author: Daryn Sharp, 2014-01-16, 19:30
[HADOOP-10233] RPC lacks output flow control - Hadoop - [issue]
...The RPC layer has input flow control via the callq, however it lacks any output flow control.  A handler will try to directly send the response.  If the full response is not sent t...
http://issues.apache.org/jira/browse/HADOOP-10233    Author: Daryn Sharp, 2014-01-14, 23:48
[HADOOP-10173] Remove UGI from DIGEST-MD5 SASL server creation - Hadoop - [issue]
...Instantiation of SASL server instances within the readers threads is performed within a UGI.getCurrentUser().doAs.  getCurrentUser is synchronized, and doAs also degrades performance. &...
http://issues.apache.org/jira/browse/HADOOP-10173    Author: Daryn Sharp, 2014-01-03, 14:47
[HADOOP-10172] Cache SASL server factories - Hadoop - [issue]
...Performance for SASL server creation is atrocious.  Sasl.createSaslServer does not cache the provider resolution for the factories.  Factory resolution and server instantiation has...
http://issues.apache.org/jira/browse/HADOOP-10172    Author: Daryn Sharp, 2013-12-20, 15:09
[HADOOP-10174] Run RPC server within the Subject that instantiated it - Hadoop - [issue]
...RPC servers would not require as many doAs blocks if the server threads run within the access control context that instantiates the server....
http://issues.apache.org/jira/browse/HADOOP-10174    Author: Daryn Sharp, 2013-12-17, 19:24
Re: How can I get FSNamesystem of running NameNode in cluster? - Hadoop - [mail # dev]
...Are you adding something internal to the NN?  If not, you cannot get the namesystem instance via a client unless you are using a minicluster object.  Daryn  On Dec 9, 2013, at...
   Author: Daryn Sharp, 2013-12-09, 14:42
[HADOOP-9955] RPC idle connection closing is extremely inefficient - Hadoop - [issue]
...The RPC server listener loops accepting connections, distributing the new connections to socket readers, and then conditionally & periodically performs a scan for idle connections.  ...
http://issues.apache.org/jira/browse/HADOOP-9955    Author: Daryn Sharp, 2013-11-15, 13:28
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