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https://issues.apache.org/jira/browse/MAPREDUCE-1466?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12842534#action_12842534
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Amareshwari Sriramadasu commented on MAPREDUCE-1466:
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After MAPREDUCE-849, all library specific configuration parameters are present
respective libraries, not JobContext. For example, FileInputFormat.INPUT_DIR,
SPLIT_MAXSIZE, SPLIT_MINSIZE are configuration for FileInputFormat. So,
INPUT_NUM_FILES should also be in FileInputFormat and its name should be
something like mapreduce.input.fileinputformat.numinputfiles
> FileInputFormat should save #input-files in JobConf
> ---------------------------------------------------
>
> Key: MAPREDUCE-1466
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1466
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: client
> Affects Versions: 0.22.0
> Reporter: Arun C Murthy
> Assignee: Arun C Murthy
> Priority: Minor
> Fix For: 0.22.0
>
> Attachments: MAPREDUCE-1466_yhadoop20-1.patch,
> MAPREDUCE-1466_yhadoop20-2.patch, MAPREDUCE-1466_yhadoop20-3.patch,
> MAPREDUCE-1466_yhadoop20.patch, mr-1466-trunk-v1.patch
>
>
> We already track the amount of data consumed by MR applications
> (MAP_INPUT_BYTES), alongwith, it would be useful to #input-files from the
> client-side for analysis. Along the lines of MAPREDUCE-1403, it would be easy
> to stick in the JobConf during job-submission.
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