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https://issues.apache.org/jira/browse/HADOOP-18487?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17744219#comment-17744219
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ASF GitHub Bot commented on HADOOP-18487:
-----------------------------------------

steveloughran commented on PR #4996:
URL: https://github.com/apache/hadoop/pull/4996#issuecomment-1640209168

   rbf compile failure is very much related
   ```
   rbf: [ERROR] COMPILATION ERROR : 
   [INFO] -------------------------------------------------------------
   [ERROR] 
/home/jenkins/jenkins-home/workspace/hadoop-multibranch_PR-4996/ubuntu-focal/src/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/protocolPB/RouterAdminProtocolTranslatorPB.java:[174,29]
 cannot find symbol
     symbol:   variable ProtobufHelper
     location: class 
org.apache.hadoop.hdfs.protocolPB.RouterAdminProtocolTranslatorPB
   [INFO] 1 error
   [INFO] ---------------------------------
   ```
   




> protobuf-2.5.0 dependencies => provided
> ---------------------------------------
>
>                 Key: HADOOP-18487
>                 URL: https://issues.apache.org/jira/browse/HADOOP-18487
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: build, ipc
>    Affects Versions: 3.3.4
>            Reporter: Steve Loughran
>            Priority: Major
>              Labels: pull-request-available
>
> uses of protobuf 2.5 and RpcEnginej have been deprecated since 3.3.0 in 
> HADOOP-17046
> while still keeping those files around (for a long time...), how about we 
> make the protobuf 2.5.0 export off hadoop common and hadoop-hdfs *provided*, 
> rather than *compile*
> that way, if apps want it for their own apis, they have to explicitly ask for 
> it, but at least our own scans don't break.
> i have no idea what will happen to the rest of the stack at this point, it 
> will be "interesting" to see



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