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[HDFS-6920] Archival Storage: check the storage type of delNodeHintStorage when deleting a replica - HDFS - [issue]
...in BlockManager.chooseExcessReplicates, it does not check the storage type of delNodeHintStorage.  Therefore,  delNodeHintStorage could possibly be chosen even if its storage type ...
http://issues.apache.org/jira/browse/HDFS-6920    Author: Tsz Wo Nicholas Sze, 2014-08-27, 22:08
[HDFS-6911] Archival Storage: check if a block is already scheduled in Mover - HDFS - [issue]
...Similar to balancer, Mover should remember all blocks already scheduled to move (movedBlocks). Then, check it before schedule a new block move....
http://issues.apache.org/jira/browse/HDFS-6911    Author: Tsz Wo Nicholas Sze, 2014-08-27, 18:39
[HDFS-6906] Archival Storage: Add more tests for BlockStoragePolicy - HDFS - [issue]
...The logic for choosing storage types is tricky, especially when there are chosen storage types and/or unavailable storage types.  Let's add more unit tests....
http://issues.apache.org/jira/browse/HDFS-6906    Author: Tsz Wo Nicholas Sze, 2014-08-25, 07:41
[HDFS-6878] Change MiniDFSCluster to support StorageType configuration for individual directories - HDFS - [issue]
...Currently, MiniDFSCluster only supports a single StorageType configuration for all datadnodes, i.e. setting all directories in all datanodes to one StorageType.  It should support setti...
http://issues.apache.org/jira/browse/HDFS-6878    Author: Tsz Wo Nicholas Sze, 2014-08-21, 20:44
[HDFS-6861] Separate Balancer specific logic form Dispatcher - HDFS - [issue]
...In order to balance datanode storage utilization of a cluster, Balancer (1) classifies datanodes into different groups (overUtilized, aboveAvgUtilized, belowAvgUtilized and underUtilized), (...
http://issues.apache.org/jira/browse/HDFS-6861    Author: Tsz Wo Nicholas Sze, 2014-08-19, 23:07
[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
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB