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https://issues.apache.org/jira/browse/HADOOP-9489?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14342387#comment-14342387
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Tsuyoshi Ozawa commented on HADOOP-9489:
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I got some errors:
{quote}
An internal error occurred during: "Importing Maven projects".
Missing parameter for pluginExecutionFilter. groupId, artifactId, versionRange
and goals must be specificed, but found: groupId = 'org.apache.hadoop'
artifactId = 'hadoop-maven-plugins'
versionRange = 'null'
goals = '[protoc]'
{quote}
Additionally, I also got errors about objects generated by probobuf.
> 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
> Priority: Minor
> 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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