keith-turner commented on code in PR #5416:
URL: https://github.com/apache/accumulo/pull/5416#discussion_r2040099499


##########
server/manager/src/main/java/org/apache/accumulo/manager/TabletGroupWatcher.java:
##########
@@ -835,14 +833,15 @@ private void unassignDeadTablet(TabletLists tLists, 
TabletMetadata tm) throws Wa
   private void hostUnassignedTablet(TabletLists tLists, KeyExtent tablet,
       UnassignedTablet unassignedTablet) {
     // maybe it's a finishing migration
-    TServerInstance dest = manager.migrations.get(tablet);
+    TServerInstance dest =
+        manager.getContext().getAmple().readTablet(tablet, 
MIGRATION).getMigration();
     if (dest != null) {
       // if destination is still good, assign it
       if (tLists.destinations.containsKey(dest)) {
         tLists.assignments.add(new Assignment(tablet, dest, 
unassignedTablet.getLastLocation()));
       } else {
         // get rid of this migration
-        manager.migrations.remove(tablet);
+        
manager.getContext().getAmple().mutateTablet(tablet).deleteMigration().mutate();

Review Comment:
   This can probably be removed, will comment in more depth elsewhere.  
Thinking when we set the future location that would be a natural place to 
remove any migrations.



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