[jira] [Updated] (HADOOP-9489) Eclipse instructions in BUILDING.txt don't work

["Chris Nauroth (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HADOOP-9489?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chris Nauroth updated HADOOP-9489:
----------------------------------
    Attachment: HADOOP-9489.2.patch

I just noticed that this ancient patch of mine never went in.  :-)  The old patch still applied with some warnings, but here is a rebase just to make it cleaner.

Is this patch still helpful?  I'm not a regular Eclipse user, so I'm probably not the best judge.

> Eclipse instructions in BUILDING.txt don't work
> -----------------------------------------------
>
>                 Key: HADOOP-9489
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9489
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: build
>    Affects Versions: 2.7.0
>            Reporter: Carl Steinbach
>            Assignee: Chris Nauroth
>         Attachments: HADOOP-9489.1.patch, HADOOP-9489.2.patch, eclipse_hadoop_errors.txt
>
>
> I have tried several times to import Hadoop trunk into Eclipse following the instructions in the BUILDING.txt file, but so far have not been able to get it to work.
> If I use a fresh install of Eclipse 4.2.2, Eclipse will complain about an undefined M2_REPO environment variable. I discovered that this is defined automatically by the M2Eclipse plugin, and think that the BUILDING.txt doc should be updated to explain this.
> After installing M2Eclipse I tried importing the code again, and now get over 2500 errors related to missing class dependencies. Many of these errors correspond to missing classes in the oah*.proto namespace, which makes me think that 'mvn eclipse:eclipse' is not triggering protoc. 



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