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Posted to mapreduce-dev@hadoop.apache.org by "Adam Kramer (JIRA)" <ji...@apache.org> on 2010/12/06 07:32:10 UTC
[jira] Created: (MAPREDUCE-2210) Preemption does not obey job
priority
Preemption does not obey job priority
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Key: MAPREDUCE-2210
URL: https://issues.apache.org/jira/browse/MAPREDUCE-2210
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: jobtracker
Reporter: Adam Kramer
Preemption, as it currently works, kills running tasks that are "unfair" in terms of the amount of task attention used by one job compared to another.
The bug is that pre-emption occurs such that HIGH priority jobs have their tasks killed when the cluster is filled with lower-priority jobs. Pre-emption should only be allowed to kill tasks for jobs with equal or lower priority.
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[jira] Resolved: (MAPREDUCE-2210) Preemption does not obey job
priority
Posted by "Adam Kramer (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/MAPREDUCE-2210?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Adam Kramer resolved MAPREDUCE-2210.
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Resolution: Not A Problem
> Preemption does not obey job priority
> -------------------------------------
>
> Key: MAPREDUCE-2210
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2210
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: contrib/fair-share
> Reporter: Adam Kramer
>
> Preemption, as it currently works, kills running tasks that are "unfair" in terms of the amount of task attention used by one job compared to another.
> The bug is that pre-emption occurs such that HIGH priority jobs have their tasks killed when the cluster is filled with lower-priority jobs. Pre-emption should only be allowed to kill tasks for jobs with equal or lower priority.
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