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[HDFS-5794] Fix the inconsistency of layout version number of ADD_DATANODE_AND_STORAGE_UUIDS between trunk and branch-2 - HDFS - [issue]
...Currently in trunk, we have the layout version:EDITLOG_ADD_BLOCK(-48, ...),CACHING(-49, ...),ADD_DATANODE_AND_STORAGE_UUIDS(-50, ...);And in branch-2, we have:EDITLOG_SUPPORT_RETRYCACHE(-47,...
http://issues.apache.org/jira/browse/HDFS-5794    Author: Jing Zhao, 2014-01-28, 23:36
[HDFS-5781] Use an array to record the mapping between FSEditLogOpCode and the corresponding byte value - HDFS - [issue]
...HDFS-5674 uses Enum.values and enum.ordinal to identify an editlog op for a given byte value. While improving the efficiency, it may cause issue. E.g., when several new editlog ops are added...
http://issues.apache.org/jira/browse/HDFS-5781    Author: Jing Zhao, 2014-01-28, 13:40
[HDFS-5824] Add a Type field in Snapshot DiffEntry's protobuf definition - HDFS - [issue]
...We need to add a Type field to differentiate FileDiff and DirectoryDiff in our  protobuf to enable the offline image viewer to parse the fsimage....
http://issues.apache.org/jira/browse/HDFS-5824    Author: Jing Zhao, 2014-01-23, 19:11
[HDFS-5777] Update LayoutVersion for the new editlog op OP_ADD_BLOCK - HDFS - [issue]
...HDFS-5704 adds a new editlog op OP_ADD_BLOCK. We need to update the LayoutVersion for this....
http://issues.apache.org/jira/browse/HDFS-5777    Author: Jing Zhao, 2014-01-18, 13:27
[HDFS-5772] Serialize under-construction file information in FSImage - HDFS - [issue]
...This jira defines FileUnderConstruction information in protobuf and adds functionality to saving/loading the information....
http://issues.apache.org/jira/browse/HDFS-5772    Author: Jing Zhao, 2014-01-15, 00:05
Re: how to caculate a HDFS directory size ? - HDFS - [mail # user]
...You may want to check the fs shell command COUNT and DU.  On Wed, Jan 8, 2014 at 4:57 PM, ch huang  wrote:  CONFIDENTIALITY NOTICE NOTICE: This message is intended for the use...
   Author: Jing Zhao, 2014-01-09, 01:07
[HDFS-4666] Disallow users to create file/dir named ".snapshot" - HDFS - [issue]
...Currently ".snapshot" is reserved by snapshots as a special tag to specify the path leading to snapshot copies. We should disallow users to create file/dir using name ".snapshot"....
http://issues.apache.org/jira/browse/HDFS-4666    Author: Jing Zhao, 2013-12-31, 23:21
[HDFS-5476] Snapshot: clean the blocks/files/directories under a renamed file/directory while deletion - HDFS - [issue]
...Currently DstReference#destroyAndCollectBlocks may fail to clean the subtree under the DstReference node for file/directory/snapshot deletion.Use case 1: rename under-construction file with ...
http://issues.apache.org/jira/browse/HDFS-5476    Author: Jing Zhao, 2013-12-11, 14:40
[HDFS-5633] Improve OfflineImageViewer to use less memory - HDFS - [issue]
...Currently after we rename a file/dir which is included in a snapshot, the file/dir can be linked with two different reference INodes. To avoid saving/loading the inode multiple times in/from...
http://issues.apache.org/jira/browse/HDFS-5633    Author: Jing Zhao, 2013-12-06, 13:41
[HDFS-5590] Block ID and generation stamp may be reused when persistBlocks is set to false - HDFS - [issue]
...In a cluster with non-HA setup and dfs.persist.blocks set to false, we may have data loss in the following case: client creates file1 and requests a block from NN and get blk_id1_gs1 client ...
http://issues.apache.org/jira/browse/HDFS-5590    Author: Jing Zhao, 2013-12-06, 13:41
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