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Posted to mapreduce-issues@hadoop.apache.org by "jay vyas (JIRA)" <ji...@apache.org> on 2013/04/18 19:27:18 UTC
[jira] [Commented] (MAPREDUCE-5165) Create MiniMRCluster version
which uses the mapreduce package.
[ https://issues.apache.org/jira/browse/MAPREDUCE-5165?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13635378#comment-13635378 ]
jay vyas commented on MAPREDUCE-5165:
-------------------------------------
I have just found that rehashes contents from another JIRA
https://issues.apache.org/jira/browse/MAPREDUCE-3169... and there is a MiniMRYarnCluster in fact in the mapreduce package.
So.. then... Is MiniMRCluster an artifact of the MR1 days that will be less used once MR2 takes over ?
Is MiniMrYarnCluster a generic version of MiniMRCluster which will one day obviate the implementation specific MiniMRCluster altogether for the Hadoop-MapReduce jobs that are implemented in the MR2 YARN framework?
> Create MiniMRCluster version which uses the mapreduce package.
> --------------------------------------------------------------
>
> Key: MAPREDUCE-5165
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5165
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: jay vyas
> Priority: Minor
>
> The MiniMapRedCluster class references some older mapred.* classes.
> It could be recreated in the mapreduce package to use the Configuration class instead of JobConf, which would make it simpler to use and integrate with new FS implementations and test harnesses that use new Configuration (not JobConf) objects to drive tests.
> This could be done many ways:
> 1) using inheritance or else
> 2) by copying the code directly
> The appropriate implementation depends on wether or not
> 1) Is it okay for mapreduce.* classes to depend on mapred.* classes ?
> 2) Is the mapred MiniMRCluster implementation going to be deprecated or eliminated anytime?
> 3) What is the future of the JobConf class - which has been deprecated and then undeprecated ?
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