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[MAPREDUCE-1129] Assign multiple Map and Reduce tasks in Fairscheduler - MapReduce - [issue]
...In Hadoop-0.20, the period of heartbeat becomes much longer. Fairscheduler assigns at most one Map and one Reduce task per heartbeat.This makes the cluster become very inefficient. Often tim...
http://issues.apache.org/jira/browse/MAPREDUCE-1129    Author: Scott Chen, 2009-11-10, 08:08
[MAPREDUCE-1181] Enforce RSS memory limit in TaskMemoryManagerThread - MapReduce - [issue]
...TaskMemoryManagerThread will periodically check the rss memory usage of every task. If the memory usage exceeds the specified threshold, the task will be killed. Also if the total rss memory...
http://issues.apache.org/jira/browse/MAPREDUCE-1181    Author: Scott Chen, 2009-11-08, 09:03
[MAPREDUCE-1195] Task resource utilization reporting for profiling and scheduling - MapReduce - [issue]
...We can make TaskTracker reports its usage on CPU, memory, bandwidth to JobTracker. JobTracker can use the information for scheduling tasks and profiling jobs. One way to do this is to first ...
http://issues.apache.org/jira/browse/MAPREDUCE-1195    Author: Scott Chen, 2009-11-06, 22:17
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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