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https://issues.apache.org/jira/browse/HDDS-4517?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17239044#comment-17239044
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Tsz-wo Sze commented on HDDS-4517:
----------------------------------

Usages of RaftServerProxy and RaftServerImpl:
{code}
-- 
./hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/common/transport/server/ratis/ContainerStateMachine.java
 74: import org.apache.ratis.server.impl.RaftServerProxy;
   1 occurrence(s)
-- 
./hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/common/transport/server/ratis/XceiverServerRatis.java
103: import org.apache.ratis.server.impl.RaftServerProxy;
   1 occurrence(s)
-- 
./hadoop-hdds/container-service/src/test/java/org/apache/hadoop/ozone/container/ContainerTestHelper.java
 54: import org.apache.ratis.server.impl.RaftServerImpl;
 55: import org.apache.ratis.server.impl.RaftServerProxy;
   2 occurrence(s)
-- 
./hadoop-ozone/insight/src/main/java/org/apache/hadoop/ozone/insight/datanode/RatisInsight.java
 58:                     "org.apache.ratis.server.impl",
   1 occurrence(s)
-- 
./hadoop-ozone/integration-test/src/test/java/org/apache/hadoop/ozone/container/TestHelper.java
 50: import org.apache.ratis.server.impl.RaftServerImpl;
 51: import org.apache.ratis.server.impl.RaftServerProxy;
   2 occurrence(s)
-- 
./hadoop-ozone/integration-test/src/test/java/org/apache/hadoop/ozone/freon/TestHadoopDirTreeGenerator.java
 29: import org.apache.ratis.server.impl.RaftServerImpl;
   1 occurrence(s)
-- 
./hadoop-ozone/integration-test/src/test/java/org/apache/hadoop/ozone/freon/TestHadoopNestedDirGenerator.java
 29: import org.apache.ratis.server.impl.RaftServerImpl;
   1 occurrence(s)
-- 
./hadoop-ozone/integration-test/src/test/java/org/apache/hadoop/ozone/freon/TestOzoneClientKeyGenerator.java
 28: import org.apache.ratis.server.impl.RaftServerImpl;
   1 occurrence(s)
{code}


> Ozone should only use public Ratis APIs
> ---------------------------------------
>
>                 Key: HDDS-4517
>                 URL: https://issues.apache.org/jira/browse/HDDS-4517
>             Project: Hadoop Distributed Data Store
>          Issue Type: Improvement
>            Reporter: Tsz-wo Sze
>            Assignee: Tsz-wo Sze
>            Priority: Major
>
> Ozone currently may use some internal Ratis APIs such as RaftServerProxy or 
> even RaftServerImpl.  The JIRA is to change Ozone to use only public Ratis 
> APIs.
> This also helps Ratis to define the public APIs for state machines; see 
> RATIS-1181.



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