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Posted to mapreduce-issues@hadoop.apache.org by "Qinghe Jin (JIRA)" <ji...@apache.org> on 2012/12/13 11:40:14 UTC
[jira] [Updated] (MAPREDUCE-295) Jobtracker leaves tasktrackers
underutilized
[ https://issues.apache.org/jira/browse/MAPREDUCE-295?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Qinghe Jin updated MAPREDUCE-295:
---------------------------------
Description: For some workloads, the jobtracker doesn't keep all the slots utilized even under heavy load.l; (was: For some workloads, the jobtracker doesn't keep all the slots utilized even under heavy load.)
> Jobtracker leaves tasktrackers underutilized
> --------------------------------------------
>
> Key: MAPREDUCE-295
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-295
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Environment: 2x HT 2.8GHz Intel Xeon, 3GB RAM, 4x 250GB HD linux boxes, 100 node cluster
> Reporter: Khaled Elmeleegy
> Attachments: hadoop-khaled-tasktracker.10s.uncompress.timeline.pdf, hadoop-khaled-tasktracker.150ms.uncompress.timeline.pdf, jobtracker20.patch, jobtracker.patch
>
>
> For some workloads, the jobtracker doesn't keep all the slots utilized even under heavy load.l;
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