dcapwell commented on code in PR #3416:
URL: https://github.com/apache/cassandra/pull/3416#discussion_r1683344146


##########
src/java/org/apache/cassandra/tcm/Startup.java:
##########
@@ -365,21 +367,29 @@ public static void startup(Supplier<Transformation> 
initialTransformation, boole
     {
         ClusterMetadata metadata = ClusterMetadata.current();
         NodeId self = metadata.myNodeId();
-        AccordService.startup(self);
 
         // finish in-progress sequences first
         InProgressSequences.finishInProgressSequences(self);
         metadata = ClusterMetadata.current();
 
-        switch (metadata.directory.peerState(self))
+        NodeState startingstate = metadata.directory.peerState(self);
+        switch (startingstate)
+        {
+            case REGISTERED:
+            case LEFT:
+                break;
+            default:
+                AccordService.startup(self);
+        }
+        switch (startingstate)

Review Comment:
   @ifesdjeen I tried to document this. 
   
   ```
   // When Accord starts up it needs to check for any historic epochs that it 
needs to know about (in order
   // to handle pending transactions), in order to know what nodes to check 
with it needs to know what the
   // settled placement is (so it knows what peers to reach out to).
   ```



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