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[HADOOP-11152] Better random number generator - Hadoop - [issue]
...HDFS-7122 showed that naive ThreadLocal usage of simple LCG based j.u.Random creates unacceptable distribution of random numbers for block placement. Similarly, ThreadLocalRandom in java 7 (...
http://issues.apache.org/jira/browse/HADOOP-11152    Author: Luke Lu, 2014-12-16, 01:59
[HADOOP-8561] Introduce HADOOP_PROXY_USER for secure impersonation in child hadoop client processes - Hadoop - [issue]
...To solve the problem for an authenticated user to type hadoop shell commands in a web console, we can introduce an HADOOP_PROXY_USER environment variable to allow proper impersonation in the...
http://issues.apache.org/jira/browse/HADOOP-8561    Author: Luke Lu, 2014-09-04, 00:22
[HADOOP-9683] Wrap IpcConnectionContext in RPC headers - Hadoop - [issue]
...After HADOOP-9421, all RPC exchanges (including SASL) are wrapped in RPC headers except IpcConnectionContext, which is still raw protobuf, which makes request pipelining (a desirable feature...
http://issues.apache.org/jira/browse/HADOOP-9683    Author: Luke Lu, 2014-09-04, 00:02
[HADOOP-7601] Move common fs implementations to a hadoop-fs module - Hadoop - [issue]
...Much of the hadoop-common dependencies is from the fs implementations. We have more fs implementations on the way (ceph, lafs etc). I propose that we move all the fs implementations to a had...
http://issues.apache.org/jira/browse/HADOOP-7601    Author: Luke Lu, 2014-08-20, 19:36
[HADOOP-6918] Make metrics naming consistent - Hadoop - [issue]
...While working HADOOP-6728, I noticed that our metrics naming style is all over the place: Capitalized camel case: e.g., "FilesCreated" in namenode metrics and some rpc metrics uncapitalized ...
http://issues.apache.org/jira/browse/HADOOP-6918    Author: Luke Lu, 2014-07-31, 00:37
[HADOOP-7266] Deprecate metrics v1 - Hadoop - [issue]
http://issues.apache.org/jira/browse/HADOOP-7266    Author: Luke Lu, 2014-07-30, 21:00
[HADOOP-6728] Overhaul metrics framework - Hadoop - [issue]
...Per discussions with Arun, Chris, Hong and Rajiv, et al, we concluded that the current metrics framework needs an overhaul to: Allow multiple plugins for different monitoring systems simulta...
http://issues.apache.org/jira/browse/HADOOP-6728    Author: Luke Lu, 2014-07-30, 19:28
[HADOOP-9194] RPC Support for QoS - Hadoop - [issue]
...One of the next frontiers of Hadoop performance is QoS (Quality of Service). We need QoS support to fight the inevitable "buffer bloat" (including various queues, which are probably necessar...
http://issues.apache.org/jira/browse/HADOOP-9194    Author: Luke Lu, 2014-07-30, 00:15
[HADOOP-8515] Upgrade Jetty to the current Jetty 7 release - Hadoop - [issue]
...According to http://dev.eclipse.org/mhonarc/lists/jetty-announce/msg00026.html, jetty-6 has been effectively EOL since January. Let's bump jetty to the 7 series. The current jetty 6.1.26 con...
http://issues.apache.org/jira/browse/HADOOP-8515    Author: Luke Lu, 2014-07-07, 10:31
[HADOOP-8061] Back port trunk metrics2 changes to 1.x branch - Hadoop - [issue]
...For hysterical raisins, metrics2 code in hadoop 1.x branch and trunk diverged. It looks like HBase needs to support both 1.x and 0.23+ for a while, hence the more urgent need to clean up the...
http://issues.apache.org/jira/browse/HADOOP-8061    Author: Luke Lu, 2014-01-20, 09:14
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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