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https://issues.apache.org/jira/browse/HADOOP-16598?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16939852#comment-16939852
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Duo Zhang commented on HADOOP-16598:
------------------------------------
{noformat}
[INFO] --- protobuf-maven-plugin:0.5.1:compile (src-compile-protoc) @
hadoop-common ---
[WARNING] Error injecting: org.xolstice.maven.plugin.protobuf.ProtocCompileMojo
java.lang.UnsupportedClassVersionError: com/google/common/collect/ImmutableSet
: Unsupported major.minor version 52.0
{noformat}
Seems the plugin is jdk8 only? Let me check.
> Backport "HADOOP-16558 [COMMON+HDFS] use protobuf-maven-plugin to generate
> protobuf classes" to all active branches
> -------------------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-16598
> URL: https://issues.apache.org/jira/browse/HADOOP-16598
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: common
> Reporter: Duo Zhang
> Assignee: Duo Zhang
> Priority: Major
> Attachments: HADOOP-16598-branch-2.9.patch,
> HADOOP-16598-branch-2.patch, HADOOP-16598-branch-3.1.patch,
> HADOOP-16598-branch-3.2.patch
>
>
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