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[HADOOP-5824] remove OP_READ_METADATA functionality from Datanode - Hadoop - [issue]
...Operation OP_READ_METADATA exists on the datanode streaming interface. But it is not used by any client code and is currently not protected by access token. Should it be removed?  ...
http://issues.apache.org/jira/browse/HADOOP-5824    Author: Kan Zhang, 2014-02-03, 10:40
[HADOOP-6913] Circular initialization between UserGroupInformation and KerberosName - Hadoop - [issue]
...If the first call to UGI is UGI.setConfiguration(conf), it will try to initialize UGI class. During this initialization, the code calls KerberosName.setConfiguration(). KerberosName's static...
http://issues.apache.org/jira/browse/HADOOP-6913    Author: Kan Zhang, 2013-08-20, 21:29
[HADOOP-4487] Security features for Hadoop - Hadoop - [issue]
...This is a top-level tracking JIRA for security work we are doing in Hadoop. Please add reference to this when opening new security related JIRAs....
http://issues.apache.org/jira/browse/HADOOP-4487    Author: Kan Zhang, 2013-06-11, 19:42
[HADOOP-8758] Support for pluggable token implementations - Hadoop - [issue]
...Variants of the delegation token mechanism have been employed by different Hadoop services (NN, JT, RM, etc) to re-authenticate a previously Kerberos-authenticated client. While existing del...
http://issues.apache.org/jira/browse/HADOOP-8758    Author: Kan Zhang, 2012-09-23, 02:29
[HADOOP-6419] Change RPC layer to support SASL based mutual authentication - Hadoop - [issue]
...The authentication mechanism to use will be SASL DIGEST-MD5 (see RFC-2222 and RFC-2831) or SASL GSSAPI/Kerberos. Since J2SE 5, Sun provides a SASL implementation by default. Both our delegat...
http://issues.apache.org/jira/browse/HADOOP-6419    Author: Kan Zhang, 2012-07-02, 00:00
Re: Please join me in welcoming Matt Foley as the newest Apache Hadoop HDFS committer - Hadoop - [mail # general]
...Congrats, Matt!   On 5/19/11 2:16 PM, "Jakob Homan"  wrote:  On behalf of the PMC, I am pleased to announce that Matt Foley has been elected a committer in the Apache Hadoop H...
   Author: Kan Zhang, 2011-05-19, 21:28
[expand - 2 more] - Re: HTTP transport? - Hadoop - [mail # general]
...  On 10/14/09 9:37 AM, "Doug Cutting"  wrote:  Thanks for pointing this out. I did a little testing on it. It seems that when you use Kerberos cipher suites with SSL, the Kerb...
   Author: Kan Zhang, 2009-11-06, 19:15
[expand - 5 more] - Re: Design for security in Hadoop - Hadoop - [mail # dev]
...  On 3/25/09 1:04 PM, "Kan Zhang"  wrote:  My bad. I read your doc again and I guess you are referring to the protocol you proposed in the paper for the authentication to data...
   Author: Kan Zhang, 2009-03-25, 20:43
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