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[HDFS-4091] Add snapshot quota to limit the number of snapshots - HDFS - [issue]
...Once a directory has been set to snapshottable, users could create snapshots of the directories.  In this JIRA, we add a quota to snapshottable directories.  The quota is set by ad...
http://issues.apache.org/jira/browse/HDFS-4091    Author: Tsz Wo, 2012-10-24, 21:41
[HDFS-4099] Clean up replication code and add more javadoc - HDFS - [issue]
...FSNamesystem.checkReplicationFactor(..) should be combined with BlockManager.checkReplication(..). Add javadoc to the replication related method in BlockManager. Also clean up those methods....
http://issues.apache.org/jira/browse/HDFS-4099    Author: Tsz Wo, 2012-10-23, 15:01
[HDFS-4078] Handle replication in snapshots - HDFS - [issue]
...Without snapshots, file replication is the same as block replication.With snapshot, the file replication R_o of the original file and the file replication R_s of the snapshot file could poss...
http://issues.apache.org/jira/browse/HDFS-4078    Author: Tsz Wo, 2012-10-22, 19:51
[HDFS-4079] Add SnapshotManager - HDFS - [issue]
...SnapshotManager maintains a list for all the snapshottable directories in the namespace.  It also supports snapshot related methods such as setting a directory to snapshottable, creatin...
http://issues.apache.org/jira/browse/HDFS-4079    Author: Tsz Wo, 2012-10-21, 22:36
[HDFS-4088] Remove "throws QuotaExceededException" from an INodeDirectoryWithQuota constructor - HDFS - [issue]
...The constructor body does not throw QuotaExceededException.  We should remove it from the declaration....
http://issues.apache.org/jira/browse/HDFS-4088    Author: Tsz Wo, 2012-10-20, 15:01
[HDFS-4077] Support snapshottable INodeDirectory - HDFS - [issue]
...Allow INodeDirectory to be set to snapshottable INodeDirectory so that snapshots of the directory can be created....
http://issues.apache.org/jira/browse/HDFS-4077    Author: Tsz Wo, 2012-10-19, 23:31
[HDFS-4076] Support snapshot of single files - HDFS - [issue]
...The snapshot of a file shares the blocks with the original file in order to avoid copying data.  However, the snapshot file has its own metadata so that it could have independent permis...
http://issues.apache.org/jira/browse/HDFS-4076    Author: Tsz Wo, 2012-10-19, 20:40
[HDFS-4073] Two minor improvements to FSDirectory - HDFS - [issue]
...Add a debug log message to FSDirectory.unprotectedAddFile(..) for the caught IOException. Remove "throw UnresolvedLinkException" from addToParent(..)....
http://issues.apache.org/jira/browse/HDFS-4073    Author: Tsz Wo, 2012-10-19, 15:01
[HDFS-4037] Rename the getReplication() method in BlockCollection to getBlockReplication() - HDFS - [issue]
...In the BlockCollection interface, "getReplication" actually means "get block replication".  Let's make it clear in the name....
http://issues.apache.org/jira/browse/HDFS-4037    Author: Tsz Wo, 2012-10-19, 01:40
[HDFS-4036] FSDirectory.unprotectedAddFile(..) should not throw UnresolvedLinkException - HDFS - [issue]
...The code in FSDirectory.unprotectedAddFile(..) does not throw UnresolvedLinkException, we should remove "throws UnresolvedLinkException" from the declaration....
http://issues.apache.org/jira/browse/HDFS-4036    Author: Tsz Wo, 2012-10-18, 02:31
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