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https://issues.apache.org/jira/browse/HADOOP-9882?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14630734#comment-14630734
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Ray Chiang commented on HADOOP-9882:
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Try installing 2.5.0 and follow these instructions from BUILDING.txt. My
system has some newer version as the default, but I can point to an older
installation and it works fine for me.
=====
Protocol Buffer compiler
The version of Protocol Buffer compiler, protoc, must match the version of the
protobuf JAR.
If you have multiple versions of protoc in your system, you can set in your
build shell the HADOOP_PROTOC_PATH environment variable to point to the one you
want to use for the Hadoop build. If you don't define this environment variable,
protoc is looked up in the PATH.
> Trunk doesn't compile
> ---------------------
>
> Key: HADOOP-9882
> URL: https://issues.apache.org/jira/browse/HADOOP-9882
> Project: Hadoop Common
> Issue Type: Bug
> Components: build
> Reporter: Jean-Baptiste Onofré
>
> Currently, trunk does not compile (in hadoop-common-project/hadoop-common
> module):
> [ERROR] Failed to execute goal
> org.apache.hadoop:hadoop-maven-plugins:3.0.0-SNAPSHOT:protoc (compile-protoc)
> on project hadoop-common: org.apache.maven.plugin.MojoExecutionException:
> protoc version is 'libprotoc 2.4.1', expected version is '2.5.0' -> [Help 1]
> I gonna fix that.
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