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[HADOOP-8087] Paths that start with a double slash cause "No filesystem for scheme: null" errors - Hadoop - [issue]
...Path is incorrectly parsing //dir/path in a very unexpected way.  While it should translate to the directory $fs.default.name}/dir/path, it instead discards the //dir and returns$fs.def...
http://issues.apache.org/jira/browse/HADOOP-8087    Author: Daryn Sharp, 2014-04-11, 18:35
[HADOOP-9749] Remove synchronization for UGI.getCurrentUser - Hadoop - [issue]
...HADOOP-7854 added synchronization to getCurrentUser due to ConcurrentModificationExceptions.  This degrades NN call handler performance.The problem was not well understood at the time, ...
http://issues.apache.org/jira/browse/HADOOP-9749    Author: Daryn Sharp, 2014-04-10, 21:48
[HADOOP-9747] Reduce unnecessary UGI synchronization - Hadoop - [issue]
...Jstacks of heavily loaded NNs show up to dozens of threads blocking in the UGI....
http://issues.apache.org/jira/browse/HADOOP-9747    Author: Daryn Sharp, 2014-04-10, 21:48
[HADOOP-9748] Reduce blocking on UGI.ensureInitialized - Hadoop - [issue]
...EnsureInitialized is always sync'ed on the class, when it should only sync if it actually has to initialize....
http://issues.apache.org/jira/browse/HADOOP-9748    Author: Daryn Sharp, 2014-04-10, 01:55
[HADOOP-10301] AuthenticationFilter should return Forbidden for failed authentication - Hadoop - [issue]
...The hadoop-auth AuthenticationFilter returns a 401 Unauthorized without a WWW-Authenticate headers.  The is illegal per the HTTP RPC and causes a NPE in the HttpUrlConnection.This is ha...
http://issues.apache.org/jira/browse/HADOOP-10301    Author: Daryn Sharp, 2014-03-30, 15:07
[HADOOP-8014] ViewFileSystem does not correctly implement getDefaultBlockSize, getDefaultReplication, getContentSummary - Hadoop - [issue]
...ViewFileSystem incorrectly returns the FileSystem default values for getDefaultBlockSize() and getDefaultReplication().  This causes files to be created with incorrect values.  The...
http://issues.apache.org/jira/browse/HADOOP-8014    Author: Daryn Sharp, 2014-03-24, 23:43
[HADOOP-10332] HttpServer's jetty audit log always logs 200 OK - Hadoop - [issue]
...HttpServer inserts the audit logger handler  before the actual servlet handlers, so the default 200 is always logged even if the operation fails.handlers.setHandlers(new Handler[] {requ...
http://issues.apache.org/jira/browse/HADOOP-10332    Author: Daryn Sharp, 2014-03-14, 14:56
[HADOOP-9956] RPC listener inefficiently assigns connections to readers - Hadoop - [issue]
...The socket listener and readers use a complex synchronization to update the reader's NIO Selector.  Updating active selectors is not thread-safe so precautions are required.However, the...
http://issues.apache.org/jira/browse/HADOOP-9956    Author: Daryn Sharp, 2014-03-12, 21:12
[HADOOP-10129] Distcp may succeed when it fails - Hadoop - [issue]
...Distcp uses IOUtils.cleanup to close its output streams w/o previously attempting to close the streams.  IOUtils.cleanup will swallow close or implicit flush on close exceptions.  ...
http://issues.apache.org/jira/browse/HADOOP-10129    Author: Daryn Sharp, 2014-02-24, 20:58
[HADOOP-7344] globStatus doesn't grok groupings with a slash - Hadoop - [issue]
...If a glob contains a grouping with a single item that contains a slash, ex. "{a/b}", then globStatus throws "Illegal file pattern: Unclosed group near index 2" – regardless of whether ...
http://issues.apache.org/jira/browse/HADOOP-7344    Author: Daryn Sharp, 2014-02-24, 20:58
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