checkSlotsCoverage is true by default.

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

@@ -155,9 +155,9 @@ public class ClusterConnectionManager extends MasterSlaveConnectionManager {
         if (cfg.isCheckSlotsCoverage() && lastPartitions.size() != MAX_SLOT) {
             stopThreads();
             if (failedMasters.isEmpty()) {
-                throw new RedisConnectionException("Not all slots covered! Only " + lastPartitions.size() + " slots are available", lastException);
+                throw new RedisConnectionException("Not all slots covered! Only " + lastPartitions.size() + " slots are available. Set checkSlotsCoverage = false to avoid this check.", lastException);
             } else {
-                throw new RedisConnectionException("Not all slots covered! Only " + lastPartitions.size() + " slots are available. Failed masters according to cluster status: " + failedMasters, lastException);
+                throw new RedisConnectionException("Not all slots covered! Only " + lastPartitions.size() + " slots are available. Set checkSlotsCoverage = false to avoid this check. Failed masters according to cluster status: " + failedMasters, lastException);
             }
         }
         

redisson/src/main/java/org/redisson/config/ClusterServersConfig.java

@@ -43,7 +43,7 @@ public class ClusterServersConfig extends BaseMasterSlaveServersConfig<ClusterSe
      */
     private int scanInterval = 5000;
 
-    private boolean checkSlotsCoverage;
+    private boolean checkSlotsCoverage = true;
 
     public ClusterServersConfig() {
     }