[jira] [Commented] (HADOOP-10775) Shell operations to fail with meaningful errors on windows if winutils.exe not found

["Steve Loughran (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-10775?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14196211#comment-14196211 ] 

Steve Loughran commented on HADOOP-10775:
-----------------------------------------

Also, if {{winutils.exe}} is on the path, no check is actually made for this. the code in hadoop assumes
# that {{HADOOP_HOME}} is defined and exists
# that {{$HADOOP_HOME/bin/winutils.exe}} exists

> Shell operations to fail with meaningful errors on windows if winutils.exe not found
> ------------------------------------------------------------------------------------
>
>                 Key: HADOOP-10775
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10775
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: util
>    Affects Versions: trunk-win
>         Environment: Apache jenkins windows1 server
>            Reporter: Steve Loughran
>            Priority: Minor
>
> If {{winutils.exe}} can't be found {{HADOOP_HOME}} wrong/unset or other causes, then an error is logged -but when any of the {{Shell}} operations are used, an NPE is raised rather than something meaningful.
> The error message at setup time should be preserved and then raised before any attempt to invoke a winutils-driven process made



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