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[HDFS-4146] Further work on changing INodeFile.blocks to private in Snapshot branch - HDFS - [issue]
...There was a conflict in INodeFile when merging HDFS-4143 so that I keep INodeFile.blocks as protected.  Otherwise, some code cannot be compiled.  It needs some more works....
http://issues.apache.org/jira/browse/HDFS-4146    Author: Tsz Wo, 2012-11-04, 22:00
[HDFS-4143] Change INodeFile.blocks to private - HDFS - [issue]
...INodeFile.blocks is currently package private.  It is accessed directly in quite many case.  It is better to change it to package private and access via setter and getter methods....
http://issues.apache.org/jira/browse/HDFS-4143    Author: Tsz Wo, 2012-11-03, 13:21
[HDFS-4141] Directory diff in snapshots - HDFS - [issue]
...With snapshots, the same directory could have different states, e.g. different sets of children, in different snapshots.  We implement a directory diff algorithm in this JIRA....
http://issues.apache.org/jira/browse/HDFS-4141    Author: Tsz Wo, 2012-11-03, 01:33
[HDFS-724] Pipeline close hangs if one of the datanode is not responsive. - HDFS - [issue]
...In the new pipeline design, pipeline close is implemented by sending an additional empty packet.  If one of the datanode does not response to this empty packet, the pipeline hangs. &nbs...
http://issues.apache.org/jira/browse/HDFS-724    Author: Tsz Wo, 2012-11-03, 00:16
[HDFS-4116] Add audit log for snapshot operations - HDFS - [issue]
...The new snapshot operations below should be included in audit log. allow snapshot disallow snapshot create snapshot...
http://issues.apache.org/jira/browse/HDFS-4116    Author: Tsz Wo, 2012-11-02, 02:27
[HDFS-4118] Change INodeDirectory.getExistingPathINodes(..) to work with snapshots - HDFS - [issue]
...int getExistingPathINodes(byte[][] components, INode[] existing, boolean resolveLink)The INodeDirectory above retrieves existing INodes from the given path components.  It needs to be u...
http://issues.apache.org/jira/browse/HDFS-4118    Author: Tsz Wo, 2012-10-31, 03:14
[HDFS-4111] Support snapshot of subtrees - HDFS - [issue]
...HDFS-4076 add the ability to take snapshot of single files.  In this JIRA, we add the ability to take snapshot of subtree trees in the namesystem....
http://issues.apache.org/jira/browse/HDFS-4111    Author: Tsz Wo, 2012-10-29, 01:59
[HDFS-4119] Complete the allowSnapshot code and add a test for it - HDFS - [issue]
...The major components of the code are already there.  We only have to connect them together and add a test for it....
http://issues.apache.org/jira/browse/HDFS-4119    Author: Tsz Wo, 2012-10-28, 20:03
[HDFS-4107] Add utility methods to cast INode to INodeFile and INodeFileUnderConstruction - HDFS - [issue]
...In the namenode code, there are many individual routines checking whether an inode is null and whether it could be cast to INodeFile/INodeFileUnderConstruction.  Let's add utility metho...
http://issues.apache.org/jira/browse/HDFS-4107    Author: Tsz Wo, 2012-10-26, 15:01
[HDFS-4092] Update file deletion logic to support snapshot files - HDFS - [issue]
...When snapshots are created, the blocks are shared among the snapshot files and the original file.  Deletion of the snapshot file or the original file does not necessarily lead to deleti...
http://issues.apache.org/jira/browse/HDFS-4092    Author: Tsz Wo, 2012-10-25, 20:33
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