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https://issues.apache.org/jira/browse/HADOOP-9489?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14546318#comment-14546318
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Ravi Prakash commented on HADOOP-9489:
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Thanks for the patches Chris! I use Eclipse and I am able to import the
projects without this patch. I *do* build the project before running mvn
eclipse:eclipse, so I'm a +1 to adding that in BUILDING.txt. We should probably
also level expectations (some newcomers may expect to be able to build and
"run" the project from Eclipse; I've never been able to do this) I find Eclipse
immensely useful for navigating the code, attaching remote debuggers and
stepping through, but I build and run only on the command line using mvn . I
wonder if that is other peoples' process too?
> 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
> Priority: Minor
> Labels: BB2015-05-TBR
> Attachments: HADOOP-9489.003.patch, HADOOP-9489.004.patch,
> HADOOP-9489.1.patch, HADOOP-9489.2.patch, eclipse_hadoop_errors.txt, error.log
>
>
> 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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