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[HDFS-7228] Add an SSD policy into the default BlockStoragePolicySuite - HDFS - [issue]
...Currently in the default BlockStoragePolicySuite, we've defined 4 storage policies: LAZY_PERSIST, HOT, WARM, and COLD. Since we have already defined the SSD storage type, it will be useful t...
http://issues.apache.org/jira/browse/HDFS-7228    Author: Jing Zhao, 2014-10-22, 18:52
Re: Thinking ahead to hadoop-2.6 - HDFS - [mail # dev]
...Just to give a quick update about the current status of HDFS-6584 (archivalstorage). So far after HDFS-7081 got committed this morning, the mainfunctionalities have already been finished. As...
   Author: Jing Zhao, 2014-09-25, 01:19
Re: [VOTE] Merge HDFS-6581 to trunk - Writing to replicas in memory. - HDFS - [mail # dev]
...+1. This is a very useful feature and the performance number looksconvincing.Thanks,-JingOn Tue, Sep 23, 2014 at 5:12 PM, Xiaoyu Yao  wrote:CONFIDENTIALITY NOTICENOTICE: This message is...
   Author: Jing Zhao, 2014-09-24, 00:28
[HDFS-6996] SnapshotDiff report can hit IndexOutOfBoundsException when there are nested renamed directory/file - HDFS - [issue]
...Currently when computing snapshot diff report where a renamed file/directory is involved, we scan the withNameList inside of the corresponding WithCount node to identify the correct rename t...
http://issues.apache.org/jira/browse/HDFS-6996    Author: Jing Zhao, 2014-09-05, 14:47
[HDFS-6876] Archival Storage: support set/get storage policy in DFSAdmin - HDFS - [issue]
...We need to have DFSAdmin commands to manually set/get the storage policy of a file/directory....
http://issues.apache.org/jira/browse/HDFS-6876    Author: Jing Zhao, 2014-09-05, 04:16
[HDFS-6961] Archival Storage: BlockPlacementPolicy#chooseTarget should check each valid storage type in each choosing round - HDFS - [issue]
...Currently in each choosing round of BlockPlacementPolicy#chooseTarget (e.g., round 1 for choosing local storage, round 2 for remote rack, etc.), we only take into account the first storage t...
http://issues.apache.org/jira/browse/HDFS-6961    Author: Jing Zhao, 2014-09-04, 22:23
[HDFS-6609] Use DirectorySnapshottableFeature to represent a snapshottable directory - HDFS - [issue]
...Currently we use INodeDirectorySnapshottable to represent a snapshottable directory. When we set a directory to snapshottable, we also need to replace the corresponding INode. It will be bet...
http://issues.apache.org/jira/browse/HDFS-6609    Author: Jing Zhao, 2014-09-04, 07:16
[HDFS-5554] Add Snapshot Feature to INodeFile - HDFS - [issue]
...Similar with HDFS-5285, we can add a FileWithSnapshot feature to INodeFile and use it to replace the current INodeFileWithSnapshot....
http://issues.apache.org/jira/browse/HDFS-5554    Author: Jing Zhao, 2014-09-04, 02:15
[HDFS-5715] Use Snapshot ID to indicate the corresponding Snapshot for a FileDiff/DirectoryDiff - HDFS - [issue]
...Currently FileDiff and DirectoryDiff both contain a snapshot object reference to indicate its associated snapshot. Instead, we can simply record the corresponding snapshot id there. This can...
http://issues.apache.org/jira/browse/HDFS-5715    Author: Jing Zhao, 2014-09-04, 02:15
[HDFS-3844] Add @Override where necessary and remove unnecessary {@inheritdoc} and imports - HDFS - [issue]
...1. Add @Override annotation where necessary2. Remove corresponding unnecessary {@inheritdoc} annotation3. Remove unused imports...
http://issues.apache.org/jira/browse/HDFS-3844    Author: Jing Zhao, 2014-09-04, 01:59
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