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[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
[MAPREDUCE-1090] Modify log statement in Tasktracker log related to memory monitoring to include attempt id. - MapReduce - [issue]
...Currently the TaskMemoryManagerThread logs a line like:org.apache.hadoop.mapred.TaskMemoryManagerThread: Memory usage of ProcessTree 14321 :372686848bytes. Limit : 2147483648bytes. It would ...
http://issues.apache.org/jira/browse/MAPREDUCE-1090    Author: Hemanth Yamijala, 2010-08-24, 21:18
[MAPREDUCE-1028] Cleanup tasks are scheduled using high memory configuration, leaving tasks in unassigned state. - MapReduce - [issue]
...A cleanup task is launched for a failed task of a job. This task is created based on the TIP of the failed task, and so is marked as requiring as many slots to run as the original task itsel...
http://issues.apache.org/jira/browse/MAPREDUCE-1028    Author: Hemanth Yamijala, 2010-08-24, 21:18
[MAPREDUCE-1018] Document changes to the memory management and scheduling model - MapReduce - [issue]
...There were changes done for the configuration, monitoring and scheduling of high ram jobs. This must be documented in the mapred-defaults.xml and also on forrest documentation...
http://issues.apache.org/jira/browse/MAPREDUCE-1018    Author: Hemanth Yamijala, 2010-08-24, 21:17
[MAPREDUCE-1009] Forrest documentation needs to be updated to describes features provided for supporting hierarchical queues - MapReduce - [issue]
...Forrest documentation must be updated for describing how to set up and use hierarchical queues in the framework and the capacity scheduler....
http://issues.apache.org/jira/browse/MAPREDUCE-1009    Author: Hemanth Yamijala, 2010-08-24, 21:17
[MAPREDUCE-915] For secure environments, the Map/Reduce debug script must be run as the user. - MapReduce - [issue]
...The Taskcontroller model allows admins to set up a cluster configuration that runs tasks as users. The debug script feature of Map/Reduce provided by the configuration options: mapred.map.ta...
http://issues.apache.org/jira/browse/MAPREDUCE-915    Author: Hemanth Yamijala, 2010-08-24, 21:15
[MAPREDUCE-893] Provide an ability to refresh queue configuration without restart. - MapReduce - [issue]
...While administering a cluster using multiple queues, administrators feel a need to refresh queue properties on the fly without needing to restart the JobTracker. This is partially supported ...
http://issues.apache.org/jira/browse/MAPREDUCE-893    Author: Hemanth Yamijala, 2010-08-24, 21:15
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