[MAPREDUCE-2787] MR-279: Performance improvement in running Uber MapTasks - ASF JIRA

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Type: Improvement
Status: Resolved
Priority: Major
Resolution: Won't Fix
Affects Version/s: None
Fix Version/s: None
Component/s: mrv2
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Description

The runUberMapTasks() in org.apache.hadoop.mapred.UberTask obtains the local fileSystem and local job configuration for every task attempt. This will have a negative performance impact.

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MAPREDUCE-2787.patch
08/Aug/11 19:33
2 kB
Ahmed Radwan

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Assignee:: Ahmed Radwan

Reporter:: Ahmed Radwan

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Watchers:: 4 Start watching this issue

Dates

Created:: 08/Aug/11 19:20

Updated:: 11/Aug/11 09:16

Resolved:: 11/Aug/11 09:16