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[HADOOP-9980] LightWeightGSet's modification field should be volatile so that detect changes by other thread in iteration. - Hadoop - [issue]
...LightWeightGSet should have a volatile modification field (like: LightWeightHashSet or LightWeightLinkedSet) that is used to detect updates while iterating so they can throw a ConcurrentModi...
http://issues.apache.org/jira/browse/HADOOP-9980    Author: Junping Du, 2013-09-27, 04:22
[HADOOP-10001] Document topology with NodeGroup layer configuration in branch-1 - Hadoop - [issue]
...NodeGroup layer in NetworkTopology is supported after 1.2.0 release for hadoop better running on virtualization or other additional layer cases. A document settings in hdfs-site.xml and mapr...
http://issues.apache.org/jira/browse/HADOOP-10001    Author: Junping Du, 2013-09-27, 00:08
[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
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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