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[HADOOP-8475] 4-layer topology (with NodeGroup layer) implementation of Container Assignment and Task Scheduling (for YARN) - Hadoop - [issue]
...There are several classes in YARN’s container assignment and task scheduling algorithms that related to data locality which were updated to give preference to running a container on the same...
http://issues.apache.org/jira/browse/HADOOP-8475    Author: Junping Du, 2012-06-04, 09:54
[HADOOP-8471] Make ReplicaPlacementPolicyDefault extensible for reuse code in subclass - Hadoop - [issue]
...ReplicaPlacementPolicy is already a pluggable component in Hadoop. A user specified ReplicaPlacementPolicy can be specified in the hdfs-site.xml configuration under the key "dfs.block.replic...
http://issues.apache.org/jira/browse/HADOOP-8471    Author: Junping Du, 2012-06-04, 09:06
[HADOOP-8304] DNSToSwitchMapping should add interface to resolve individual host besides a list of host - Hadoop - [issue]
...DNSToSwitchMapping now has only one API to resolve a host list: public List<String> resolve(List<String> names). But the two major caller: RackResolver.resolve() and DatanodeMana...
http://issues.apache.org/jira/browse/HADOOP-8304    Author: Junping Du, 2012-05-09, 12:30
Re: Adding Elasticity to Hadoop MapReduce - Hadoop - [mail # dev]
...Hello Arun and all,          I think current hadoop have a go od capability of scale out but not so good at scale in. As its design for d edicated cluster and machines, there is not too much...
   Author: Junping Du, 2011-09-15, 09:14
Re: Hadoop on vCloud Express - Hadoop - [mail # user]
...Hello Jignesh,          I am Junping from VMware and just happe n to look at your case. I have experience for deploying hadoop cluster on v Sphere, and hope I can provide some help on deploy...
   Author: Junping Du, 2011-09-13, 01:23
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