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[HDFS-6918] Investigate eviction from RAM disk via file truncation - HDFS - [issue]
...We proposed evicting blocks from RAM disk by just deleting the file. Assuming the client completes its read quickly the block will be deleted when the client closes its handle.Colin Patrick ...
http://issues.apache.org/jira/browse/HDFS-6918    Author: Arpit Agarwal, 2014-08-23, 21:58
[HDFS-5033] Bad error message for fs -put/copyFromLocal if user doesn't have permissions to read the source - HDFS - [issue]
...fs -put/copyFromLocal shows a "No such file or directory" error when the user doesn't have permissions to read the source file/directory. Saying "Permission Denied" is more useful to the use...
http://issues.apache.org/jira/browse/HDFS-5033    Author: Karthik Kambatla, 2014-08-23, 16:36
[HDFS-6829] DFSAdmin refreshSuperUserGroupsConfiguration failed in security cluster - HDFS - [issue]
...When we run command "hadoop dfsadmin -refreshSuperUserGroupsConfiguration", it failed and report below message:14/08/05 21:32:06 WARN security.MultiRealmUserAuthentication: The serverPrincip...
http://issues.apache.org/jira/browse/HDFS-6829    Author: zhaoyunjiong, 2014-08-23, 16:07
[HDFS-6899] Allow changing MiniDFSCluster volumes per DN and capacity per volume - HDFS - [issue]
...MiniDFSCluster hardcodes the number of directories per volume to two. Propose removing the hard-coded restriction.It would be useful to limit the capacity of individual storage directories f...
http://issues.apache.org/jira/browse/HDFS-6899    Author: Arpit Agarwal, 2014-08-23, 16:07
[HDFS-6919] Consider enforcing single limit for RAM disk usage and replicas cached via locking - HDFS - [issue]
...The DataNode can have a single limit for memory usage which applies to both replicas cached via CCM and replicas on RAM disk.See comments 1, 2 and 3 for discussion....
http://issues.apache.org/jira/browse/HDFS-6919    Author: Arpit Agarwal, 2014-08-23, 08:27
[HDFS-5851] Support memory as a storage medium - HDFS - [issue]
...Memory can be used as a storage medium for smaller/transient files for fast write throughput.More information/design will be added later....
http://issues.apache.org/jira/browse/HDFS-5851    Author: Arpit Agarwal, 2014-08-23, 06:45
[HDFS-5135] Umbrella JIRA for NFS end to end unit test frameworks - HDFS - [issue]
...Currently, we have to manually start portmap and nfs3 processes to test patch and new functionalities. This JIRA is to track the effort to introduce a test framework to NFS unit test without...
http://issues.apache.org/jira/browse/HDFS-5135    Author: Brandon Li, 2014-08-23, 01:38
[HDFS-6916] Like NameNode, NFS gateway should do name-id mapping with multiple sources - HDFS - [issue]
...Like what's already done in Namenode, NFS should also do the name id mapping in a similar way, e.g., shell/ldap/composit mappings.The difference here is that, NN does mapping from user name ...
http://issues.apache.org/jira/browse/HDFS-6916    Author: Brandon Li, 2014-08-22, 22:31
[HDFS-5204] Stub implementation of getrlimit for Windows. - HDFS - [issue]
...The HDFS-4949 feature branch adds a JNI wrapper over the getrlimit function.  This function does not exist on Windows.  We need to provide a stub implementation so that the codebas...
http://issues.apache.org/jira/browse/HDFS-5204    Author: Chris Nauroth, 2014-08-22, 20:11
[HDFS-3689] Add support for variable length block - HDFS - [issue]
...Currently HDFS supports fixed length blocks. Supporting variable length block will allow new use cases and features to be built on top of HDFS....
http://issues.apache.org/jira/browse/HDFS-3689    Author: Suresh Srinivas, 2014-08-22, 18:55
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