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[HDFS-5535] Umbrella jira for improved HDFS rolling upgrades - HDFS - [issue]
...In order to roll a new HDFS release through a large cluster quickly and safely, a few enhancements are needed in HDFS. An initial High level design document will be attached to this jira, an...
http://issues.apache.org/jira/browse/HDFS-5535    Author: Nathan Roberts, 2014-12-18, 19:10
[HDFS-6407] new namenode UI, lost ability to sort columns in datanode tab - HDFS - [issue]
...old ui supported clicking on column header to sort on that column. The new ui seems to have dropped this very useful feature.There are a few tables in the Namenode UI to display  datano...
http://issues.apache.org/jira/browse/HDFS-6407    Author: Nathan Roberts, 2014-12-05, 04:03
[YARN-2904] Use linux cgroups to enhance container tear down - YARN - [issue]
...If we are launching yarn containers within cgroups, linux provides some guarantees that can help completely tear down a container.  Specifically, linux guarantees that tasks can't escap...
http://issues.apache.org/jira/browse/YARN-2904    Author: Nathan Roberts, 2014-11-25, 21:20
[YARN-2809] Implement workaround for linux kernel panic when removing cgroup - YARN - [issue]
...Some older versions of linux have a bug that can cause a kernel panic when the LCE attempts to remove a cgroup. It is a race condition so it's a bit rare but on a few thousand node cluster i...
http://issues.apache.org/jira/browse/YARN-2809    Author: Nathan Roberts, 2014-11-25, 19:29
[YARN-1975] Used resources shows escaped html in CapacityScheduler and FairScheduler page - YARN - [issue]
...Used resources displays as <memory:1111, vCores;> with capacity scheduler...
http://issues.apache.org/jira/browse/YARN-1975    Author: Nathan Roberts, 2014-09-04, 02:12
[MAPREDUCE-5569] FloatSplitter is not generating correct splits - MapReduce - [issue]
...The closing split is not calculated correctly:     // Catch any overage and create the closed interval for the last split.     if (curLower <= maxVal || spli...
http://issues.apache.org/jira/browse/MAPREDUCE-5569    Author: Nathan Roberts, 2014-09-04, 00:30
[YARN-2072] RM/NM UIs and webservices are missing vcore information - YARN - [issue]
...Change RM and NM UIs and webservices to include virtual cores....
http://issues.apache.org/jira/browse/YARN-2072    Author: Nathan Roberts, 2014-09-03, 21:35
[MAPREDUCE-5846] Rumen doesn't understand JobQueueChangedEvent - MapReduce - [issue]
...MAPREDUCE:5732 introduced a JobQueueChangeEvent to jhist files. Rumen fails to parse jhist files containing this event....
http://issues.apache.org/jira/browse/MAPREDUCE-5846    Author: Nathan Roberts, 2014-09-03, 21:33
[YARN-2410] Nodemanager ShuffleHandler can easily exhaust file descriptors - YARN - [issue]
...The async nature of the shufflehandler can cause it to open a huge number offile descriptors, when it runs out it crashes.Scenario:Job with 6K reduces, slow start set to 0.95, about 40 map o...
http://issues.apache.org/jira/browse/YARN-2410    Author: Nathan Roberts, 2014-08-13, 19:06
[MAPREDUCE-5883] "Total megabyte-seconds" in job counters is slightly misleading - MapReduce - [issue]
...The following counters are in milliseconds so "megabyte-seconds" might be better stated as "megabyte-milliseconds"MB_MILLIS_MAPS.name=               Total ...
http://issues.apache.org/jira/browse/MAPREDUCE-5883    Author: Nathan Roberts, 2014-05-11, 23:05
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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