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[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-3601] Implementation of ReplicaPlacementPolicyNodeGroup to support 4-layer network topology - HDFS - [issue]
...A subclass of ReplicaPlacementPolicyDefault, ReplicaPlacementPolicyNodeGroup was developed along with unit tests to support the four-layer hierarchical topology.The replica placement strateg...
http://issues.apache.org/jira/browse/HDFS-3601    Author: Junping Du, 2012-11-13, 21:49
[HDFS-3498] Make Replica Removal Policy pluggable and ReplicaPlacementPolicyDefault extensible for reusing code in subclass - HDFS - [issue]
...ReplicaPlacementPolicy is already a pluggable component in Hadoop. However, the Replica Removal Policy is still nested in BlockManager that need to be separated out into a ReplicaPlacementPo...
http://issues.apache.org/jira/browse/HDFS-3498    Author: Junping Du, 2012-11-13, 21:49
[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
[HDFS-3499] Make NetworkTopology support user specified topology class - HDFS - [issue]
http://issues.apache.org/jira/browse/HDFS-3499    Author: Junping Du, 2012-06-04, 18:22
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