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[HDFS-6828] Separate block replica dispatching from Balancer - HDFS - [issue]
...The Balancer class implements two major features, (1) balancing logic for selecting replicas in order to balance the cluster and (2) block replica dispatching for moving the block replica ar...
http://issues.apache.org/jira/browse/HDFS-6828    Author: Tsz Wo Nicholas Sze, 2014-08-18, 23:29
[HDFS-6801] Archival Storage: Add a new data migration tool - HDFS - [issue]
...The tool is similar to Balancer.  It periodic scans the blocks in HDFS and uses path and/or other meta data (e.g. mtime) to determine if a block should be cooled down (i.e. hot => wa...
http://issues.apache.org/jira/browse/HDFS-6801    Author: Tsz Wo Nicholas Sze, 2014-08-18, 18:52
[HDFS-4261] TestBalancerWithNodeGroup times out - HDFS - [issue]
...When I manually ran TestBalancerWithNodeGroup, it always timed out in my machine.  Looking at the Jerkins report build #3573, TestBalancerWithNodeGroup somehow was skipped so that the p...
http://issues.apache.org/jira/browse/HDFS-4261    Author: Tsz Wo Nicholas Sze, 2014-08-17, 09:44
[HDFS-6167] Relocate the non-public API classes in the hdfs.client package - HDFS - [issue]
...The org.apache.hadoop.hdfs.client package is for public client API.  The non-public API classes should be moved to some other packages....
http://issues.apache.org/jira/browse/HDFS-6167    Author: Tsz Wo Nicholas Sze, 2014-08-15, 06:41
[HDFS-6835] Archival Storage: Add a new API to set storage policy - HDFS - [issue]
...The new data migration tool proposed HDFS-6801 will determine if the storage policy of files needs to be updated.  The tool needs a new API to set storage policy....
http://issues.apache.org/jira/browse/HDFS-6835    Author: Tsz Wo Nicholas Sze, 2014-08-12, 20:33
[HDFS-6837] Code cleanup for Balancer and Dispatcher - HDFS - [issue]
...A few minor code cleanup changes: The constructor of Dispatcher should not read Balancer's conf properties; the values should be passed by parameters. StorageGroup.utilization can be removed...
http://issues.apache.org/jira/browse/HDFS-6837    Author: Tsz Wo Nicholas Sze, 2014-08-12, 16:57
[HDFS-6812] Remove addBlock and replaceBlock from DatanodeDescriptor - HDFS - [issue]
...DatanodeDescriptor.addBlock(..) is not used anymore.  DatanodeDescriptor.replaceBlock(..) is only used once....
http://issues.apache.org/jira/browse/HDFS-6812    Author: Tsz Wo Nicholas Sze, 2014-08-07, 15:58
[HDFS-6809] Move some Balancer's inner classes to standalone classes - HDFS - [issue]
...Some of the inner classes in Balancer such as MovedBlocks, Matcher, etc. can be moved out as standalone classes so that these classes can be reused by other code such as the new data migrati...
http://issues.apache.org/jira/browse/HDFS-6809    Author: Tsz Wo Nicholas Sze, 2014-08-07, 15:58
[HDFS-6739] Add getDatanodeStorageReport to ClientProtocol - HDFS - [issue]
...ClientProtocol has a getDatanodeReport(..) methods for retrieving datanode report from namenode.  However, there is no way to get datanode storage report....
http://issues.apache.org/jira/browse/HDFS-6739    Author: Tsz Wo Nicholas Sze, 2014-08-02, 23:12
[HDFS-6685] Balancer should preserve storage type of replicas - HDFS - [issue]
...When Balancer moves replicas to balance the cluster, it should always move replicas from a storage with any type to another storage with the same type, i.e. it preserves storage type of repl...
http://issues.apache.org/jira/browse/HDFS-6685    Author: Tsz Wo Nicholas Sze, 2014-08-01, 17:28
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