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[HDFS-4652] Node with one topology layer should be handled as fault topology when NodeGroup layer is enabled - HDFS - [issue]
...Currently, nodes with one layer topology are allowed to join in the cluster that with enabling NodeGroup layer which cause some exception cases. When NodeGroup layer is enabled, the cluster ...
http://issues.apache.org/jira/browse/HDFS-4652    Author: Junping Du, 2013-04-02, 00:18
[HDFS-3942] Backport HDFS-3495: Update balancer policy for Network Topology with additional 'NodeGroup' layer - HDFS - [issue]
...This is the backport work for HDFS-3495 and HDFS-4234....
http://issues.apache.org/jira/browse/HDFS-3942    Author: Junping Du, 2013-01-28, 04:52
[HDFS-4386] Backport HDFS-4261 to branch-1 to fix timeout in TestBalancerWithNodeGroup - HDFS - [issue]
...There are also observed Timeout in TestBalancerWithNodeGroup, like: https://issues.apache.org/jira/browse/HBASE-7529?focusedCommentId=13549790&page=com.atlassian.jira.plugin.system.issue...
http://issues.apache.org/jira/browse/HDFS-4386    Author: Junping Du, 2013-01-28, 04:46
[HDFS-4337] Backport HDFS-4240 to branch-1: Make sure nodes are avoided to place replica if some replica are already under the same nodegroup. - HDFS - [issue]
...Update affects version from 1.0.0 to 1.2.0....
http://issues.apache.org/jira/browse/HDFS-4337    Author: Junping Du, 2013-01-02, 12:42
[HDFS-3497] Update Balancer policy with NodeGroup layer - HDFS - [issue]
...1. Make sure Network Topology and BlockPlacementPolicy check in balancer is compatible with new one with adding NodeGroup layer.2. Update balancer policy for performance optimization with No...
http://issues.apache.org/jira/browse/HDFS-3497    Author: Junping Du, 2012-11-30, 00:58
[HDFS-3496] Update balancer for correctness with NodeGroup - two replicas are not on the same node - HDFS - [issue]
http://issues.apache.org/jira/browse/HDFS-3496    Author: Junping Du, 2012-11-30, 00:57
[HDFS-4127] Log message is not correct in case of short of replica - HDFS - [issue]
...For some reason that block cannot be placed with enough replica (like no enough available data nodes), it will throw a warning with wrong number of replica in short....
http://issues.apache.org/jira/browse/HDFS-4127    Author: Junping Du, 2012-10-30, 14:01
[HDFS-3619] isGoodBlockCandidate() in Balancer is not handling properly if replica factor >3 - HDFS - [issue]
...Let's assume:1. replica factor = 42. source node in rack 1 has 1st replica, 2nd and 3rd replica are in rack 2, 4th replica in rack3 and target node is in rack3. So, It should be good for bal...
http://issues.apache.org/jira/browse/HDFS-3619    Author: Junping Du, 2012-07-10, 07:24
[HDFS-3500] Test for 4 layer NetworkTopology (with NodeGroup) - HDFS - [issue]
http://issues.apache.org/jira/browse/HDFS-3500    Author: Junping Du, 2012-07-01, 12:07
[HDFS-3324] Update DatanodeManager to resolve network location with new API from HADOOP-8304 (DNSToSwitchMapping should add interface to resolve individual host besides a list of host) - HDFS - [issue]
...HADOOP-8304 (DNSToSwitchMapping should add interface to resolve individual host besides a list of host) will induce a new API to resolve individual host rather than a list of host. Here is u...
http://issues.apache.org/jira/browse/HDFS-3324    Author: Junping Du, 2012-06-29, 14:14
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