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[HDFS-6923] Propagate LazyPersist flag to DNs via DataTransferProtocol - HDFS - [issue]
...If the LazyPersist flag is set in the file properties, the DFSClient will propagate it to the DataNode via DataTransferProtocol....
http://issues.apache.org/jira/browse/HDFS-6923    Author: Arpit Agarwal, 2014-08-27, 23:34
[HDFS-6922] Add LazyPersist flag to INodeFile, save it in FsImage and edit logs - HDFS - [issue]
...Support for saving the LazyPersist flag in the FsImage and edit logs....
http://issues.apache.org/jira/browse/HDFS-6922    Author: Arpit Agarwal, 2014-08-27, 23:33
[HDFS-6955] DN should reserve disk space for a full block when creating tmp files - HDFS - [issue]
...HDFS-6898 is introducing disk space reservation for RBW files to avoid running out of disk space midway through block creation.This Jira is to introduce similar reservation for tmp files....
http://issues.apache.org/jira/browse/HDFS-6955    Author: Arpit Agarwal, 2014-08-27, 21:08
[HDFS-6936] The HttpFSFileSystem should also return the isLazyPersist flag in the FileStatus - HDFS - [issue]
...Per code review from Jitendra Nath Pandey on HDFS-6921, the HttpFSFileSystem should also return the isLazyPersist flag in the FileStatus....
http://issues.apache.org/jira/browse/HDFS-6936    Author: Arpit Agarwal, 2014-08-27, 16:55
Re: Updates on migration to git - HDFS - [mail # dev]
...I cloned the new repo, built trunk and branch-2, verified all the branchesare present. Also checked a few branches and the recent commit historymatches our existing repo. Everything looks go...
   Author: Arpit Agarwal, 2014-08-26, 22:29
[HDFS-6900] Eliminate DU thread per block pool slice - HDFS - [issue]
...We use one DU thread per block pool slice to compute disk usage information. In addition to the thread overhead this results in the disk usage information being out of date for up to 10 minu...
http://issues.apache.org/jira/browse/HDFS-6900    Author: Arpit Agarwal, 2014-08-26, 00:16
[HDFS-6581] Write to single replica in memory - HDFS - [issue]
...Per discussion with the community on HDFS-5851, we will implement writing to a single replica in DN memory via DataTransferProtocol.This avoids some of the issues with short-circuit writes, ...
http://issues.apache.org/jira/browse/HDFS-6581    Author: Arpit Agarwal, 2014-08-26, 00:01
[HDFS-6933] Skip checksum verification when reading from memory - HDFS - [issue]
...Checksum verification can be skipped when reading from replicas on local RAM disk....
http://issues.apache.org/jira/browse/HDFS-6933    Author: Arpit Agarwal, 2014-08-25, 11:49
[HDFS-6934] Move checksum computation off the hot path when writing to RAM disk - HDFS - [issue]
http://issues.apache.org/jira/browse/HDFS-6934    Author: Arpit Agarwal, 2014-08-23, 22:35
[HDFS-6910] Initial prototype implementation for replicas in memory using tmpfs - HDFS - [issue]
http://issues.apache.org/jira/browse/HDFS-6910    Author: Arpit Agarwal, 2014-08-23, 22:13
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