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[HADOOP-8470] Implementation of 4-layer subclass of NetworkTopology (NetworkTopologyWithNodeGroup) - Hadoop - [issue]
...To support the four-layer hierarchical topology shown in attached figure as a subclass of NetworkTopology, NetworkTopologyWithNodeGroup was developed along with unit tests. NetworkTopologyWi...
http://issues.apache.org/jira/browse/HADOOP-8470    Author: Junping Du, 2013-08-27, 23:06
[HADOOP-9784] Add a builder for HttpServer - Hadoop - [issue]
...There are quite a lot of constructors in class of HttpServer to create instance. Create a builder class to abstract the building steps which helps to avoid more constructors in the future....
http://issues.apache.org/jira/browse/HADOOP-9784    Author: Junping Du, 2013-08-21, 15:57
[HADOOP-9756] Additional cleanup RPC code - Hadoop - [issue]
...HADOOP-9754 already did good job to address most of work for cleanup RPC code. Here is some additional work, include: Remove some unused deprecated code. Narrow "throws Exception" to throw s...
http://issues.apache.org/jira/browse/HADOOP-9756    Author: Junping Du, 2013-07-27, 08:12
[HADOOP-9451] Node with one topology layer should be handled as fault topology when NodeGroup layer is enabled - Hadoop - [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/HADOOP-9451    Author: Junping Du, 2013-06-20, 09:46
[HADOOP-9616] In branch-2, baseline of Javadoc Warnings (specified in test-patch.properties) is mismatch with  Javadoc warnings in current codebase - Hadoop - [issue]
...Now the baseline is set to 13 warnings, but they are 29 warnings now. 16 warnings belongs to using Sun proprietary APIs, and 13 warnings is using incorrect link in doc. I think we should at ...
http://issues.apache.org/jira/browse/HADOOP-9616    Author: Junping Du, 2013-06-05, 17:51
[HADOOP-8469] Make NetworkTopology class pluggable - Hadoop - [issue]
...The class NetworkTopology is where the three-layer hierarchical topology is modeled in the current code base and is instantiated directly by the DatanodeManager and Balancer.To support alter...
http://issues.apache.org/jira/browse/HADOOP-8469    Author: Junping Du, 2013-06-03, 15:07
[HADOOP-9165] Dynamic Resource/Slot Configuration on NM/TT - Hadoop - [issue]
...The current Hadoop MRV1/YARN resource management logic assumes per node (TT/NM) resource is static during the lifetime of the TT/NM process. Allowing run-time configuration on per node resou...
http://issues.apache.org/jira/browse/HADOOP-9165    Author: Junping Du, 2013-04-01, 22:22
[HADOOP-8817] Backport Network Topology Extension for Virtualization (HADOOP-8468) to branch-1 - Hadoop - [issue]
...HADOOP-8468 propose network topology changes for running on virtualized infrastructure, which includes:1. Add "NodeGroup" layer in new NetworkTopology (also known as NetworkTopologyWithNodeG...
http://issues.apache.org/jira/browse/HADOOP-8817    Author: Junping Du, 2013-03-19, 17:41
[HADOOP-8567] Port conf servlet to dump running configuration  to branch 1.x - Hadoop - [issue]
...HADOOP-6408 provide conf servlet that can dump running configuration which great helps admin to trouble shooting the configuration issue. However, that patch works on branch after 0.21 only ...
http://issues.apache.org/jira/browse/HADOOP-8567    Author: Junping Du, 2013-03-06, 09:55
[HADOOP-9045] In nodegroup-aware case, make sure nodes are avoided to place replica if some replica are already under the same nodegroup - Hadoop - [issue]
...In previous implementation for HADOOP-8468, 3rd replica is avoid to place on the same nodegroup of 2nd replica. But it didn't provide check on nodegroup of 1st replica, so if 2nd replica's r...
http://issues.apache.org/jira/browse/HADOOP-9045    Author: Junping Du, 2012-11-28, 07:22
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