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[MAPREDUCE-4650] Provide an ability to show task counters for a given task type in Web UI - MapReduce - [issue]
...In the Web UI for Hadoop (post YARN), there is a view that lists counter values per task for a given counter (singlejobcounter page). I found this very useful to get a consolidated view of a...
http://issues.apache.org/jira/browse/MAPREDUCE-4650    Author: Hemanth Yamijala, 2012-09-11, 12:39
[MAPREDUCE-51] TestTaskLimits fails occassionally - MapReduce - [issue]
...When I run TestTaskLimits locally, it fails sometimes with a timeout. This is with trunk....
http://issues.apache.org/jira/browse/MAPREDUCE-51    Author: Hemanth Yamijala, 2011-12-31, 09:36
[MAPREDUCE-19] TaskMemoryMonitorThread is not stopped in close - MapReduce - [issue]
...The task memory monitor thread is created in initialize, but is not stopped in close. So, if there's a reinit, this can result in a thread becoming a zombie as the thread variable is replace...
http://issues.apache.org/jira/browse/MAPREDUCE-19    Author: Hemanth Yamijala, 2011-12-31, 09:03
[MAPREDUCE-23] Start times for some tasks are missing from task reports after job tracker restart - MapReduce - [issue]
...When a JobTracker with the mapred.jobtracker.restart.recover option turned on, restarts, it recovers task statuses from all tasks recorded in the history for running jobs. Task trackers rejo...
http://issues.apache.org/jira/browse/MAPREDUCE-23    Author: Hemanth Yamijala, 2011-12-31, 08:53
[MAPREDUCE-17] Changing priority of a completed job causes problems in JobInProgressListeners - MapReduce - [issue]
...If the priority of a completed job is changed, a JobChangeEvent is raised and the JobInProgressListeneners, like the capacity scheduler, are notified. Most implementations handle the event b...
http://issues.apache.org/jira/browse/MAPREDUCE-17    Author: Hemanth Yamijala, 2011-12-31, 08:52
[MAPREDUCE-824] Support a hierarchy of queues in the capacity scheduler - MapReduce - [issue]
...Currently in Capacity Scheduler, cluster capacity is divided among the queues based on the queue capacity. These queues typically represent an organization and the capacity of the queue repr...
http://issues.apache.org/jira/browse/MAPREDUCE-824    Author: Hemanth Yamijala, 2011-10-18, 07:01
[MAPREDUCE-1607] Task controller may not set permissions for a task cleanup attempt's log directory - MapReduce - [issue]
...Task controller uses the INITIALIZE_TASK command to initialize task attempt and task log directories. For cleanup tasks, task attempt directories are named as task-attempt-id.cleanup. But lo...
http://issues.apache.org/jira/browse/MAPREDUCE-1607    Author: Hemanth Yamijala, 2010-08-24, 21:21
[MAPREDUCE-1398] TaskLauncher remains stuck on tasks waiting for free nodes even if task is killed. - MapReduce - [issue]
...Tasks could be assigned to trackers for slots that are running other tasks in a commit pending state. This is an optimization done to pipeline task assignment and launch. When the task reach...
http://issues.apache.org/jira/browse/MAPREDUCE-1398    Author: Hemanth Yamijala, 2010-08-24, 21:20
[MAPREDUCE-1160] Two log statements at INFO level fill up jobtracker logs - MapReduce - [issue]
...There are two log statements being logged at an INFO level that are unnecessarily filling up JT logs. This is making it difficult to debug issues on large cluster systems.The two statements ...
http://issues.apache.org/jira/browse/MAPREDUCE-1160    Author: Hemanth Yamijala, 2010-08-24, 21:19
[MAPREDUCE-1153] Metrics counting tasktrackers and blacklisted tasktrackers are not updated when trackers are decommissioned. - MapReduce - [issue]
...MAPREDUCE-1103 added instrumentation on the jobtracker to count the number of actual, blacklisted and decommissioned tasktrackers. When a tracker is decommissioned, the tasktracker count or ...
http://issues.apache.org/jira/browse/MAPREDUCE-1153    Author: Hemanth Yamijala, 2010-08-24, 21:19
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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