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From "Karam Singh (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-3230) Data Local maps information not coming Job client CLI or in JobHistory
Date Thu, 20 Oct 2011 12:25:10 GMT
Data Local maps information not coming  Job client CLI or in JobHistory 
------------------------------------------------------------------------

                 Key: MAPREDUCE-3230
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3230
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: mrv2
    Affects Versions: 0.23.0
            Reporter: Karam Singh


Size of cluster is 350 NMs.
I have topology.node.switch.mapping.impl is set to enable rack-locality. 
Ran randomwriter/sort and scan jobs.
Both jobs ran 
Launched map tasks=16800

On Job client sort says -:
  Launched map tasks=16800
  Launched reduce tasks=700
  Other local map tasks=10
  Rack-local map tasks=16790

On Job client scan says -:
  Launched map tasks=16800
  Other local map tasks=50
  Rack-local map tasks=16750

JobHistory files also does having information of Data Local Maps

There is information data local maps, last month, when I checked out code branch-0.23
data local maps was coming
e.g.
For sort it was with 349 NMs-:
  Launched map tasks=16754 
  Launched reduce tasks=700
  Other local map tasks=48
  Data-local map tasks=16459
  Rack-local map tasks=248

For scan it was with 349 NMs -:
  Launched map tasks=16752
  Other local map tasks=27
  Data-local map tasks=16532
  Rack-local map tasks=193




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