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https://issues.apache.org/jira/browse/HADOOP-9872?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13740300#comment-13740300
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Hudson commented on HADOOP-9872:
--------------------------------
SUCCESS: Integrated in Hadoop-trunk-Commit #4259 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/4259/])
HADOOP-9872. Improve protoc version handling and detection. (tucu) (tucu:
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1514068)
* /hadoop/common/trunk/BUILDING.txt
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/pom.xml
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/VersionInfo.java
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/resources/common-version-info.properties
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/site/apt/CLIMiniCluster.apt.vm
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/site/apt/SingleCluster.apt.vm
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/pom.xml
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/contrib/bkjournal/pom.xml
*
/hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common/pom.xml
*
/hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs/pom.xml
*
/hadoop/common/trunk/hadoop-maven-plugins/src/main/java/org/apache/hadoop/maven/plugin/protoc/ProtocMojo.java
*
/hadoop/common/trunk/hadoop-maven-plugins/src/main/java/org/apache/hadoop/maven/plugin/util/Exec.java
* /hadoop/common/trunk/hadoop-project/pom.xml
* /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/README
* /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/pom.xml
*
/hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common/pom.xml
*
/hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/pom.xml
> Improve protoc version handling and detection
> ---------------------------------------------
>
> Key: HADOOP-9872
> URL: https://issues.apache.org/jira/browse/HADOOP-9872
> Project: Hadoop Common
> Issue Type: Bug
> Components: build
> Affects Versions: 2.1.0-beta
> Reporter: Alejandro Abdelnur
> Assignee: Alejandro Abdelnur
> Priority: Blocker
> Fix For: 2.1.0-beta
>
> Attachments: HADOOP-9872.patch
>
>
> HADOOP-9845 bumped up protoc from 2.4.1 to 2.5.0, but we run into a few
> quirks:
> * 'protoc --version' in 2.4.1 exits with 1
> * 'protoc --version' in 2.5.0 exits with 0
> * if you have multiple protoc in your environment, you have to the the one
> you want to use in the PATH before building hadoop
> * build documentation and requirements of protoc are outdated
> This patch does:
> * handles protoc version correctly independently of the exit code
> * if HADOOP_PROTOC_PATH env var is defined, it uses it as the protoc
> executable * if HADOOP_PROTOC_PATH is not defined, it picks protoc from the
> PATH
> * documentation updated to reflect 2.5.0 is required
> * enforces the version of protoc and protobuf JAR are the same
> * Added to VersionInfo the protoc version used (sooner or later this will be
> useful for in a troubleshooting situation).
> [~vicaya] suggested to make the version check for protoc lax (i.e. 2.5.*).
> While working on the patch I've thought about that. But that would introduce
> a potential mismatch between protoc and protobuff JAR.
> Still If you want to use different version of protoc/protobuff from the one
> defined in the POM, you can use the -Dprotobuf.version=#### to specify your
> alternate version. But I would recommend not to do this, because if you
> publish the artifacts to a Maven repo, the fact you used
> -Dprotobuf.version=#### will be lost and the version defined in the POM
> properties will be used (IMO Maven should use the effective POM on deploy,
> but they don't).
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