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[MAPREDUCE-5269] Preemption of Reducer (and Shuffle) via checkpointing - MapReduce - [issue]
...This patch tracks the changes in the task runtime (shuffle, reducer context, etc.) that are required to implement checkpoint-based preemption of reducer tasks....
http://issues.apache.org/jira/browse/MAPREDUCE-5269    Author: Carlo Curino, 2014-10-15, 12:01
[MAPREDUCE-5848] MapReduce counts forcibly preempted containers as FAILED - MapReduce - [issue]
...The MapReduce AM is considering a forcibly preempted container as FAILED, while I think it should be considered as KILLED (i.e., not count against the maximum number of failures)....
http://issues.apache.org/jira/browse/MAPREDUCE-5848    Author: Carlo Curino, 2014-07-03, 06:33
[MAPREDUCE-5196] CheckpointAMPreemptionPolicy implements preemption in MR AM via checkpointing - MapReduce - [issue]
...This JIRA tracks a checkpoint-based AM preemption policy. The policy handles propagation of the preemption requests received from the RM to the appropriate tasks, and bookeeping of checkpoin...
http://issues.apache.org/jira/browse/MAPREDUCE-5196    Author: Carlo Curino, 2014-06-13, 16:18
[MAPREDUCE-5189] Basic AM changes to support preemption requests (per YARN-45) - MapReduce - [issue]
...This JIRA tracks the minimum amount of changes necessary in the mapreduce AM to receive preemption requests (per YARN-45) and invoke a local policy that manages preemption. (advanced policie...
http://issues.apache.org/jira/browse/MAPREDUCE-5189    Author: Carlo Curino, 2014-05-13, 22:19
[MAPREDUCE-5176] Preemptable annotations (to support preemption in MR) - MapReduce - [issue]
...Proposing a patch that introduces a new annotation @Checkpointable that represents to the framework property of user-supplied classes (e.g., Reducer, OutputCommiter). The intended semantics ...
http://issues.apache.org/jira/browse/MAPREDUCE-5176    Author: Carlo Curino, 2014-05-13, 22:18
[MAPREDUCE-5197] Checkpoint Service: a library component to facilitate checkpoint of task state - MapReduce - [issue]
...A small library that abstract file API for the purpose of checkpointing....
http://issues.apache.org/jira/browse/MAPREDUCE-5197    Author: Carlo Curino, 2013-12-18, 14:58
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