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[HDFS-5243] Remove contention during block token creation - HDFS - [issue]
...Creating a block token is unnecessarily synchronized....
http://issues.apache.org/jira/browse/HDFS-5243    Author: Daryn Sharp, 2013-09-20, 15:51
[HDFS-5029] Token operations should not block read operations - HDFS - [issue]
...Token operations unnecessarily obtain the write lock on the namespace.  Edits for token operations are independent of edits for other namespace write operations, and the edits have no o...
http://issues.apache.org/jira/browse/HDFS-5029    Author: Daryn Sharp, 2013-09-06, 19:30
Re: [VOTE] Release Apache Hadoop 2.1.0-beta - HDFS - [mail # dev]
...I broke RPC QOP for integrity and privacy options. :(  See blocker HADOOP-9816.  I think I understand the problem and it shouldn't be hard to fix.  The bug went unnoticed beca...
   Author: Daryn Sharp, 2013-08-01, 16:38
Re: Why Hadoop force using DNS? - HDFS - [mail # user]
...One reason is the lists to accept or reject DN accepts hostnames.  If dns temporarily can't resolve an IP then an unauthorized DN might slip back into the cluster, or a decommissioning ...
   Author: Daryn Sharp, 2013-07-29, 13:48
[HDFS-3905] Secure cluster cannot use hftp to an insecure cluster - HDFS - [issue]
...HDFS-3873 fixed the case where all exceptions acquiring tokens for hftp were ignored.  Jobs would be submitted sans tokens, and then the tasks would eventually all fail trying to get th...
http://issues.apache.org/jira/browse/HDFS-3905    Author: Daryn Sharp, 2013-06-07, 19:37
[HDFS-4690] Namenode exits if entering safemode while secret manager is edit logging - HDFS - [issue]
...Going into safemode involves stopping the secret manager's thread.  An interrupt is sent to this thread.  If this occurs while the thread is logging an edit, the resulting exceptio...
http://issues.apache.org/jira/browse/HDFS-4690    Author: Daryn Sharp, 2013-06-05, 15:45
[HDFS-4805] Webhdfs client is fragile to token renewal errors - HDFS - [issue]
...Webhdfs internally acquires a token that will be used for DN-based operations.  The token renewer in common will try to renew that token.  If a renewal fails for any reason, it wil...
http://issues.apache.org/jira/browse/HDFS-4805    Author: Daryn Sharp, 2013-05-20, 17:22
[HDFS-3180] Add socket timeouts to webhdfs - HDFS - [issue]
...WebHDFS connections may indefinitely hang due to no timeouts on the connection.  WebHDFS should be adapted in a similar fashion to HDFS-3166 for hftp....
http://issues.apache.org/jira/browse/HDFS-3180    Author: Daryn Sharp, 2013-05-15, 15:06
[HDFS-4766] Enable NN spnego filters only if kerberos is enabled - HDFS - [issue]
...Counter-part to HADOOP-9516 to only enable SPNEGO if kerberos is enabled....
http://issues.apache.org/jira/browse/HDFS-4766    Author: Daryn Sharp, 2013-04-30, 17:55
[HDFS-4548] Webhdfs doesn't renegotiate SPNEGO token - HDFS - [issue]
...When the webhdfs SPNEGO token expires, the fs doesn't attempt to renegotiate a new SPNEGO token.  This renders webhdfs unusable for daemons that are logged in via a keytab which would a...
http://issues.apache.org/jira/browse/HDFS-4548    Author: Daryn Sharp, 2013-04-26, 03:14
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