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https://issues.apache.org/jira/browse/HADOOP-3839?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12617500#action_12617500
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Doug Cutting commented on HADOOP-3839:
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There are periodic requests to remove Hadoop's cygwin requirements, e.g., to
convert Hadoop's shell scripts to batch files. The problem is that most Hadoop
developers develop only on Linux, so that, if direct support for Windows is
added, it will not likely be well maintained, and will result in more bug
reports, not less.
> is whoami really needed on DOS-based filesystems?
It's not just whoami. There are a number of places where Hadoop depends on
having standard unix command line utilities, as well as shell scripting. It
seems like perhaps 'whoami' is the just the first one that folks encounter
currently.
Perhaps we should add a test somewhere that, when running on Windows,
explicitly checks for cygwin and throws an exception if it's not present. The
bin/hadoop script is an obvious place to put it, but that would not have caught
this case, where someone is running unit tests.
> 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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