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[HADOOP-9549] WebHdfsFileSystem hangs on close() - Hadoop - [issue]
...When close() is called via fs shoutdown hook, the synchronized method, removeRenewAction() hangs. This is because DelegationTokenRenewer calls DelayQueue.take() inside a synchronized block. ...
http://issues.apache.org/jira/browse/HADOOP-9549    Author: Kihwal Lee, 2013-05-11, 15:06
[HADOOP-8611] Allow fall-back to the shell-based implementation when JNI-based users-group mapping fails - Hadoop - [issue]
...When the JNI-based users-group mapping is enabled, the process/command will fail if the native library, libhadoop.so, cannot be found. This mostly happens at client-side where users may use ...
http://issues.apache.org/jira/browse/HADOOP-8611    Author: Kihwal Lee, 2013-05-06, 04:30
Re: How to test patch - Hadoop - [mail # dev]
...Amit,  The branch-1 test-patch works fine on my Fedora 17 box. The only difference is that I have Forrest v.0.8.  Kihwal  On 4/29/13 4:20 PM, "Amit Sela"  wrote:  ...
   Author: Kihwal Lee, 2013-04-30, 21:00
[HADOOP-9436] NetgroupCache does not refresh membership correctly - Hadoop - [issue]
...NetgroupCache is used to get around the problem of inability to obtain a single user-to-groups mapping from netgroup. For example, the ACL code pre-populates this cache, so that any user-gro...
http://issues.apache.org/jira/browse/HADOOP-9436    Author: Kihwal Lee, 2013-03-29, 16:55
[HADOOP-9136] Support per-server IPC configuration - Hadoop - [issue]
...Currently different IPC servers in Hadoop use the same config variables names starting with "ipc.server". This makes it difficult and confusing to maintain configuration for different IPC se...
http://issues.apache.org/jira/browse/HADOOP-9136    Author: Kihwal Lee, 2013-02-27, 05:27
[HADOOP-8932] JNI-based user-group mapping modules can be too chatty on lookup failures - Hadoop - [issue]
...On a user/group lookup failure, JniBasedUnixGroupsMapping and JniBasedUnixGroupsNetgroupMapping are logging thefull stack trace at WARN level.  Since the caller of these methods is alre...
http://issues.apache.org/jira/browse/HADOOP-8932    Author: Kihwal Lee, 2013-02-06, 17:05
[HADOOP-9229] IPC: Retry on connection reset or socket timeout during SASL negotiation - Hadoop - [issue]
...When an RPC server is overloaded, incoming connections may not get accepted in time, causing listen queue overflow. The impact on client varies depending on the type of OS in use. On Linux, ...
http://issues.apache.org/jira/browse/HADOOP-9229    Author: Kihwal Lee, 2013-01-18, 18:47
[HADOOP-7537] Add PowerMock for the development of better tests - Hadoop - [issue]
...We already have Mockito, but PowerMock extends its capabilties so that we can mock constructors and static methods. I find that it is extremely difficult, if not impossible, to properly test...
http://issues.apache.org/jira/browse/HADOOP-7537    Author: Kihwal Lee, 2012-12-08, 02:14
[HADOOP-9108] Add a method to clear terminateCalled to ExitUtil for test cases - Hadoop - [issue]
...Currently once terminateCalled is set, it will stay set since it's a class static variable. This can break test cases where multiple test cases run in one jvm. In MiniDfsCluster, it should b...
http://issues.apache.org/jira/browse/HADOOP-9108    Author: Kihwal Lee, 2012-11-30, 12:41
[HADOOP-9037] Bug in test-patch.sh and precommit build process - Hadoop - [issue]
...In HDFS-4171, the precommit build failed, but it still posted +1 for every category.  ===================================================================================================...
http://issues.apache.org/jira/browse/HADOOP-9037    Author: Kihwal Lee, 2012-11-15, 13:21
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