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https://issues.apache.org/jira/browse/HADOOP-19864?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18074753#comment-18074753
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ASF GitHub Bot commented on HADOOP-19864:
-----------------------------------------

pan3793 commented on code in PR #8433:
URL: https://github.com/apache/hadoop/pull/8433#discussion_r3107998193


##########
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/RpcWritable.java:
##########
@@ -33,7 +33,14 @@
 import org.apache.hadoop.thirdparty.protobuf.CodedOutputStream;
 import org.apache.hadoop.thirdparty.protobuf.Message;
 
-// note anything marked public is solely for access by SaslRpcClient
+/**
+ * Marshalling support, for hadoop shaded protobuf and legacy
+ * protobuf 2.5.

Review Comment:
   https://issues.apache.org/jira/browse/HBASE-27286
   
   > The 1.x release are now fully EOLed.





> Cut WritableRPCEngine
> ---------------------
>
>                 Key: HADOOP-19864
>                 URL: https://issues.apache.org/jira/browse/HADOOP-19864
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: ipc
>    Affects Versions: 3.6.0
>            Reporter: Steve Loughran
>            Priority: Major
>              Labels: pull-request-available
>
> Cut {{WritableRpcEngine}} from the code
> It's been obsolete for over a decade, with MAPREDUCE-6706 not needed 
> internally.
> Tez still uses it (TEZ-4708 ) so this removal will be incompatible for them. 



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