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https://issues.apache.org/jira/browse/HADOOP-3839?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12617600#action_12617600
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Steve Loughran commented on HADOOP-3839:
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I've seen the other places where cygwin is used (e.g file permission checks),
and it does make sense -at least for the servers. I'm not so convinced it needs
to be mandatory client side.
A check fror cygwin would be good...one option is just to handle that failure
we see in the stack trace, and encode the knowledge that if whoami fails with
error code=2 on windows, somebody probably hasn't got cygwin installed, or its
path set up correctly.
> hadoop should handle no cygwin on windows more gracefully
> ---------------------------------------------------------
>
> Key: HADOOP-3839
> URL: https://issues.apache.org/jira/browse/HADOOP-3839
> Project: Hadoop Core
> Issue Type: Improvement
> Environment: Windows XP, cygwin not installed
> Reporter: Steve Loughran
> Priority: Minor
>
> There have been a couple of postings to hadoop core-user in which people
> can't get hdfs to come up on windows because whoami isnt on the path, which
> fails with an IOException error code 2.
> To people not experienced in DOS error codes, this is a fairly meanless
> number which invariably leads to time wasted and support emails.
> 1. the error could be caught and handled by printing some better hints (point
> to a wiki page?)
> 2. is whoami really needed on DOS-based filesystems?
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