Revert "Fixed - Cluster failover handling #5857"

This reverts commit c86af4ec18.

redisson/src/main/java/org/redisson/cluster/ClusterConnectionManager.java

@@ -338,8 +338,7 @@ public class ClusterConnectionManager extends MasterSlaveConnectionManager {
                     addEntry(slot, entry);
                     lastPartitions.put(slot, partition);
                 }
-                if (partition.getSlotsAmount() > 0
-                        && partition.getMasterAddress() != null) {
+                if (partition.getSlotsAmount() > 0) {
                     lastUri2Partition.put(partition.getMasterAddress(), partition);
                 }
 
@@ -499,9 +498,6 @@ public class ClusterConnectionManager extends MasterSlaveConnectionManager {
     private CompletableFuture<Void> checkSlaveNodesChange(Collection<ClusterPartition> newPartitions) {
         List<CompletableFuture<?>> futures = new ArrayList<>();
         for (ClusterPartition newPart : newPartitions) {
-            if (newPart.getMasterAddress() == null) {
-                continue;
-            }
             ClusterPartition currentPart = lastUri2Partition.get(newPart.getMasterAddress());
             if (currentPart == null) {
                 continue;
@@ -634,8 +630,7 @@ public class ClusterConnectionManager extends MasterSlaveConnectionManager {
         List<CompletableFuture<?>> futures = new ArrayList<>();
 
         for (ClusterPartition newPart : newPartitions) {
-            if (newPart.getSlotsAmount() == 0
-                    || newPart.getMasterAddress() == null) {
+            if (newPart.getSlotsAmount() == 0) {
                 continue;
             }
 
@@ -698,7 +693,7 @@ public class ClusterConnectionManager extends MasterSlaveConnectionManager {
 
         for (Integer removedSlot : removedSlots) {
             ClusterPartition p = lastPartitions.remove(removedSlot);
-            if (p != null && p.getMasterAddress() != null) {
+            if (p != null) {
                 lastUri2Partition.remove(p.getMasterAddress());
             }
         }
@@ -713,7 +708,6 @@ public class ClusterConnectionManager extends MasterSlaveConnectionManager {
         Integer addedSlots = 0;
         for (ClusterPartition clusterPartition : newPartitions) {
             MasterSlaveEntry entry = getEntry(clusterPartition.getMasterAddress());
-            boolean hasNewSlots = false;
             for (Integer slot : clusterPartition.getSlots()) {
                 if (lastPartitions.containsKey(slot)) {
                     continue;
@@ -722,19 +716,16 @@ public class ClusterConnectionManager extends MasterSlaveConnectionManager {
                 if (entry != null) {
                     addEntry(slot, entry);
                     lastPartitions.put(slot, clusterPartition);
+                    lastUri2Partition.put(clusterPartition.getMasterAddress(), clusterPartition);
                     addedSlots++;
-                    hasNewSlots = true;
                 }
             }
-            if (hasNewSlots && clusterPartition.getMasterAddress() != null) {
-                lastUri2Partition.put(clusterPartition.getMasterAddress(), clusterPartition);
-            }
         }
         if (addedSlots > 0) {
             log.info("{} slots found to add", addedSlots);
         }
     }
-    
+
     private void checkSlotsMigration(Collection<ClusterPartition> newPartitions) {
         Collection<ClusterPartition> clusterLastPartitions = getLastPartitions();
 
@@ -760,7 +751,7 @@ public class ClusterConnectionManager extends MasterSlaveConnectionManager {
                     lastPartitions.put(slot, currentPartition);
                     changedSlots.add(slot);
                 });
-                if (!addedSlots.isEmpty() && currentPartition.getMasterAddress() != null) {
+                if (!addedSlots.isEmpty()) {
                     lastUri2Partition.put(currentPartition.getMasterAddress(), currentPartition);
                     log.info("{} slots added to {}", addedSlots.cardinality(), currentPartition.getMasterAddress());
                 }
@@ -770,9 +761,7 @@ public class ClusterConnectionManager extends MasterSlaveConnectionManager {
 
                 removedSlots.stream().forEach(slot -> {
                     if (lastPartitions.remove(slot, currentPartition)) {
-                        if (currentPartition.getMasterAddress() != null) {
-                            lastUri2Partition.remove(currentPartition.getMasterAddress());
-                        }
+                        lastUri2Partition.remove(currentPartition.getMasterAddress());
                         removeEntry(slot);
                         changedSlots.add(slot);
                     }