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[HDFS-6063] TestAclCLI fails intermittently when running test 24: copyFromLocal - HDFS - [issue]
...TestAclCLI seems to fail intermittently when running Test ID: [24]: copyFromLocal: copying file into a directory with a default ACL....
http://issues.apache.org/jira/browse/HDFS-6063    Author: Colin Patrick McCabe, 2014-04-10, 14:12
[HDFS-5810] Unify mmap cache and short-circuit file descriptor cache - HDFS - [issue]
...We should unify the client mmap cache and the client file descriptor cache.  Since mmaps are granted corresponding to file descriptors in the cache (currently FileInputStreamCache), the...
http://issues.apache.org/jira/browse/HDFS-5810    Author: Colin Patrick McCabe, 2014-04-03, 22:43
[HDFS-5707] Fix up the spacing for the help text in GetConf - HDFS - [issue]
...The spacing is a little ragged in the "hadoop getConf" tool.  We should fix it so it lines up....
http://issues.apache.org/jira/browse/HDFS-5707    Author: Colin Patrick McCabe, 2014-03-28, 11:57
[HDFS-5950] The DFSClient and DataNode should use shared memory segments to communicate short-circuit information - HDFS - [issue]
...The DFSClient and DataNode should use the shared memory segments and unified cache added in the other HDFS-5182 subtasks to communicate short-circuit information....
http://issues.apache.org/jira/browse/HDFS-5950    Author: Colin Patrick McCabe, 2014-03-27, 21:33
[HDFS-6161] fix HDFS protobuf namespace conflicts - HDFS - [issue]
...HDFS currently puts multiple protobuf definitions with the same name in the same protobuf namespace.For example, QJournalProtocol defines HeartbeatRequestProto in package hadoop.hdfs, but Da...
http://issues.apache.org/jira/browse/HDFS-6161    Author: Colin Patrick McCabe, 2014-03-27, 19:06
[HDFS-6107] When a block can't be cached due to limited space on the DataNode, that block becomes uncacheable - HDFS - [issue]
...When a block can't be cached due to limited space on the DataNode, that block becomes uncacheable.  This is because the CachingTask fails to reset the block state in this error handling...
http://issues.apache.org/jira/browse/HDFS-6107    Author: Colin Patrick McCabe, 2014-03-18, 15:02
[HDFS-6106] Reduce default for dfs.namenode.path.based.cache.refresh.interval.ms - HDFS - [issue]
...Reduce the default for dfs.namenode.path.based.cache.refresh.interval.ms to improve the responsiveness of caching....
http://issues.apache.org/jira/browse/HDFS-6106    Author: Colin Patrick McCabe, 2014-03-15, 14:58
[HDFS-6097] zero-copy reads are incorrectly disabled on file offsets above 2GB - HDFS - [issue]
...Zero-copy reads are incorrectly disabled on file offsets above 2GB due to some code that is supposed to disable zero-copy reads on offsets in block files greater than 2GB (because MappedByte...
http://issues.apache.org/jira/browse/HDFS-6097    Author: Colin Patrick McCabe, 2014-03-14, 14:56
[HDFS-6086] Fix a case where zero-copy or no-checksum reads were not allowed even when the block was cached - HDFS - [issue]
...We need to fix a case where zero-copy or no-checksum reads are not allowed even when the block is cached.  The case is when the block is cached before the REQUEST_SHORT_CIRCUIT_FDS oper...
http://issues.apache.org/jira/browse/HDFS-6086    Author: Colin Patrick McCabe, 2014-03-12, 14:59
[HDFS-4461] DirectoryScanner: volume path prefix takes up memory for every block that is scanned - HDFS - [issue]
...In the DirectoryScanner, we create a class ScanInfo for every block.  This object contains two File objects-- one for the metadata file, and one for the block file.  Since those Fi...
http://issues.apache.org/jira/browse/HDFS-4461    Author: Colin Patrick McCabe, 2014-03-11, 21:16
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