JacksonYao287 commented on a change in pull request #2079:
URL: https://github.com/apache/ozone/pull/2079#discussion_r600413168



##########
File path: 
hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/ha/MockSCMHAManager.java
##########
@@ -53,6 +53,10 @@ public static SCMHAManager getInstance(boolean isLeader) {
     return new MockSCMHAManager(isLeader);
   }
 
+  public static SCMHAManager getInstance(DBTransactionBuffer buffer) {

Review comment:
        MockSCMHAManager.getInstance() will always return a  SCMHAManager 
instance upon ratis, and now i can not build a sequenceIdGenerator upon no 
ratis by just setting  'OZONE_SCM_HA_ENABLE_KEY'  to false, so the 
MockSCMHAManager must have a getInstance method which can return a no-ratis 
SCMHAManager

##########
File path: 
hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/server/StorageContainerManager.java
##########
@@ -452,6 +452,11 @@ private void initializeSystemManagers(OzoneConfiguration 
conf,
       clusterMap = new NetworkTopologyImpl(conf);
     }
 
+    /*
+    TODO: setSCMHAManager is only called in tests now, so

Review comment:
       ok




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