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https://issues.apache.org/jira/browse/MAPREDUCE-3524?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinod Kumar Vavilapalli updated MAPREDUCE-3524:
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Component/s: performance
mr-am
benchmarks
Description:
Scan benchmark is more than 1.5X slower(almost 92% increased) in 0.23 than
Hadoop-0.20.204 on 350 nodes size cluster.
was:
Scan runtime is more than 1.5X slower(almost 92% increased) in 0.23 than
Hadoop-0.20.204 on 350 nodes size cluster.
Summary: Scan benchmark is more than 1.5x slower in 0.23 (was: Scan
runtime is more than 1.5x slower in 0.23)
I should've edited the title before itself. Scan is one of the mapreduce
benchmarks. It is same as the main loaden benchmark with specific settings.
(See GenericMRLoadGenerator.java). Scan is to measure the job runtime for
simply generating random data and reading+emitting the key-values (only maps,
no reduces).
> Scan benchmark is more than 1.5x slower in 0.23
> -----------------------------------------------
>
> Key: MAPREDUCE-3524
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3524
> Project: Hadoop Map/Reduce
> Issue Type: Sub-task
> Components: benchmarks, mr-am, mrv2, performance
> Affects Versions: 0.23.1
> Reporter: Karam Singh
> Assignee: Vinod Kumar Vavilapalli
> Priority: Blocker
>
> Scan benchmark is more than 1.5X slower(almost 92% increased) in 0.23 than
> Hadoop-0.20.204 on 350 nodes size cluster.
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