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https://issues.apache.org/jira/browse/HBASE-26496?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17450042#comment-17450042
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Duo Zhang commented on HBASE-26496:
-----------------------------------
Not sure if this is the root cause so just link with related to, not broken by
> [hbase-thirdparty] Exclude the original protobuf-java jar when shading
> ----------------------------------------------------------------------
>
> Key: HBASE-26496
> URL: https://issues.apache.org/jira/browse/HBASE-26496
> Project: HBase
> Issue Type: Bug
> Components: hbase-thirdparty
> Reporter: Duo Zhang
> Priority: Major
>
> We have a patched version of protobuf and we will compile it, and then in
> shade we also include the original protobuf-java, where we will get lot of
> warnings
> {noformat}
> WARNING] hbase-shaded-protobuf-3.5.1.jar, protobuf-java-3.17.1.jar define 670
> overlapping class and resource:
> [WARNING] - META-INF/MANIFEST.MF
> [WARNING] - com.google.protobuf.AbstractMessage
> [WARNING] - com.google.protobuf.AbstractMessage$Builder
> [WARNING] - com.google.protobuf.AbstractMessage$BuilderParent
> [WARNING] - com.google.protobuf.AbstractMessageLite
> [WARNING] - com.google.protobuf.AbstractMessageLite$Builder
> [WARNING] -
> com.google.protobuf.AbstractMessageLite$Builder$LimitedInputStream
> [WARNING] - com.google.protobuf.AbstractMessageLite$InternalOneOfEnum
> [WARNING] - com.google.protobuf.AbstractParser
> [WARNING] - com.google.protobuf.AbstractProtobufList
> [WARNING] - 660 more...
> [WARNING] maven-shade-plugin has detected that some class files are
> [WARNING] present in two or more JARs. When this happens, only one
> [WARNING] single version of the class is copied to the uber jar.
> [WARNING] Usually this is not harmful and you can skip these warnings,
> [WARNING] otherwise try to manually exclude artifacts based on
> [WARNING] mvn dependency:tree -Ddetail=true and the above output.
> [WARNING] See http://maven.apache.org/plugins/maven-shade-plugin/
> [WARNING] hbase-shaded-protobuf-3.5.1-sources.jar,
> protobuf-java-3.17.1-sources.jar define 202 overlapping resources:
> [WARNING] - META-INF/MANIFEST.MF
> [WARNING] - com/google/protobuf/AbstractMessage.java
> [WARNING] - com/google/protobuf/AbstractMessageLite.java
> [WARNING] - com/google/protobuf/AbstractParser.java
> [WARNING] - com/google/protobuf/AbstractProtobufList.java
> [WARNING] - com/google/protobuf/AllocatedBuffer.java
> [WARNING] - com/google/protobuf/Android.java
> [WARNING] - com/google/protobuf/Any.java
> [WARNING] - com/google/protobuf/AnyOrBuilder.java
> [WARNING] - com/google/protobuf/AnyProto.java
> [WARNING] - 192 more...
> [WARNING] maven-shade-plugin has detected that some class files are
> [WARNING] present in two or more JARs. When this happens, only one
> [WARNING] single version of the class is copied to the uber jar.
> [WARNING] Usually this is not harmful and you can skip these warnings,
> [WARNING] otherwise try to manually exclude artifacts based on
> [WARNING] mvn dependency:tree -Ddetail=true and the above output.
> [WARNING] See http://maven.apache.org/plugins/maven-shade-plugin/
> {noformat}
> Maybe this is the case why we bundle the incorrect protobuf classes and cause
> the failure when running with JDK8.
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