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https://issues.apache.org/jira/browse/HADOOP-12479?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14959916#comment-14959916
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Hudson commented on HADOOP-12479:
---------------------------------

FAILURE: Integrated in Hadoop-Mapreduce-trunk-Java8 #540 (See 
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Java8/540/])
HADOOP-12479. ProtocMojo does not log the reason for a protoc (cnauroth: rev 
fdd740622459625efe5e12f37577aa3f5746177f)
* hadoop-common-project/hadoop-common/CHANGES.txt
* 
hadoop-maven-plugins/src/main/java/org/apache/hadoop/maven/plugin/util/Exec.java
* 
hadoop-maven-plugins/src/main/java/org/apache/hadoop/maven/plugin/protoc/ProtocMojo.java


> ProtocMojo does not log the reason for a protoc compilation failure.
> --------------------------------------------------------------------
>
>                 Key: HADOOP-12479
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12479
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: build
>            Reporter: Chris Nauroth
>            Assignee: Chris Nauroth
>            Priority: Minor
>             Fix For: 2.8.0
>
>         Attachments: HADOOP-12479.001.patch
>
>
> If protoc fails with a compilation error in the proto files, our Maven plugin 
> won't print the details.  The only way to figure it out is to repeat running 
> the {{protoc}} command manually from outside the Hadoop build.  This is 
> because our {{ProtocMojo}} only captures stdout from the {{protoc}} command, 
> and compilation errors get written to {{stderr}}.



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