[jira] [Resolved] (MAPREDUCE-4172) Clean up java warnings in the hadoop-mapreduce-project sub projects

["Harsh J (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MAPREDUCE-4172?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Harsh J resolved MAPREDUCE-4172.
--------------------------------

    Resolution: Won't Fix

Patches were too broad and have gone stale. Will address these forms of issue over separate, smaller and more divided JIRAs in future.
                
> Clean up java warnings in the hadoop-mapreduce-project sub projects
> -------------------------------------------------------------------
>
>                 Key: MAPREDUCE-4172
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4172
>             Project: Hadoop Map/Reduce
>          Issue Type: Task
>          Components: build
>    Affects Versions: trunk
>            Reporter: Harsh J
>            Assignee: Harsh J
>
> There are lots of warnings in the hadoop-mapreduce-project presently. We can clear almost all of this away:
> * Unused imports
> * Unused variables
> ** For loops that can be replaced with while instead to save an unused variable
> * Unused methods
> * Deprecation warnings where an alternative can be used (Especially SequenceFile reader/writer usage and MiniDFSCluster usage)
> * Deprecation warnings where an alternative isn't clear (Especially MiniMRCluster usage and DistributedCache API usage where a Job object may not be available)
> * Unchecked conversions
> * Raw type usage
> * (etc.)
> I'm going to open one sub-task per sub-project we have, with patches attached to them.

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