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https://issues.apache.org/jira/browse/HADOOP-11464?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chris Nauroth updated HADOOP-11464:
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Attachment: HADOOP-11464.002.patch
bq. A question: do we care about daemons?
The use case I had in mind was end users running jobs and accessing their files
through Cygwin, so I wasn't considering the daemons in my earlier testing.
However, I see no reason not to support launching the daemons through Cygwin
too.
I tested launching NameNode, DataNode, ResourceManager and NodeManager through
Cygwin. That revealed that my first patch wasn't sufficient for NodeManager.
It depends on the various "*HOME" environment variables for setting up the
classpath in launched containers, so I needed to translate those individual
variables too. Also, there is a dependency that launched containers will be
able to find winutils.exe through HADOOP_HOME. This required adding an export
of HADOOP_HOME, which is a bit unfortunate. HADOOP-9422 tracks trying to
remove this dependency on HADOOP_HOME, but this is the current state of things.
I have uploaded patch v002 for both trunk and branch-2.
> Reinstate support for launching Hadoop processes on Windows using Cygwin.
> -------------------------------------------------------------------------
>
> Key: HADOOP-11464
> URL: https://issues.apache.org/jira/browse/HADOOP-11464
> Project: Hadoop Common
> Issue Type: Bug
> Components: bin
> Reporter: Chris Nauroth
> Assignee: Chris Nauroth
> Attachments: HADOOP-11464-branch-2.001.patch,
> HADOOP-11464-branch-2.002.patch, HADOOP-11464.001.patch,
> HADOOP-11464.002.patch
>
>
> The Windows compatibility work removed the dependency on Cygwin as a
> compatibility layer. However, some users may still wish to run Cygwin on a
> personal machine for running Hadoop commands that interact with a cluster.
> This issue proposes to reinstate support for launching Hadoop processes on
> Windows using Cygwin to call the bash scripts.
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