Revert "refactoring"

This reverts commit c916686a61.

redisson/src/main/java/org/redisson/command/CommandBatchService.java

@@ -34,11 +34,15 @@ import org.redisson.connection.MasterSlaveEntry;
 import org.redisson.connection.NodeSource;
 import org.redisson.liveobject.core.RedissonObjectBuilder;
 import org.redisson.misc.AsyncCountDownLatch;
+import org.redisson.misc.CountableListener;
 import org.redisson.misc.RPromise;
 import org.redisson.misc.RedissonPromise;
 
 import java.util.*;
-import java.util.concurrent.*;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
+import java.util.concurrent.LinkedBlockingDeque;
+import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.stream.Collectors;
@@ -404,15 +408,17 @@ public class CommandBatchService extends CommandAsyncService {
                     return;
                 }
                 
+                RPromise<Map<MasterSlaveEntry, List<Object>>> mainPromise = new RedissonPromise<>();
                 Map<MasterSlaveEntry, List<Object>> result = new ConcurrentHashMap<>();
-                List<CompletableFuture<?>> futures = new ArrayList<>();
+                CountableListener<Map<MasterSlaveEntry, List<Object>>> listener = new CountableListener<>(mainPromise, result);
+                listener.setCounter(connections.size());
                 for (Map.Entry<MasterSlaveEntry, Entry> entry : commands.entrySet()) {
                     RPromise<List<Object>> execPromise = new RedissonPromise<>();
                     async(entry.getValue().isReadOnlyMode(), new NodeSource(entry.getKey()), connectionManager.getCodec(), RedisCommands.EXEC, 
                             new Object[] {}, execPromise, false, false);
                     execPromise.onComplete((r, ex) -> {
                         if (ex != null) {
-                            futures.add(execPromise.toCompletableFuture());
+                            mainPromise.tryFailure(ex);
                             return;
                         }
 
@@ -421,21 +427,19 @@ public class CommandBatchService extends CommandAsyncService {
                         if (RedisCommands.WAIT.getName().equals(lastCommand.getCommand().getName())) {
                             lastCommand.getPromise().onComplete((res, e) -> {
                                 if (e != null) {
-                                    futures.add(lastCommand.getPromise().toCompletableFuture());
+                                    mainPromise.tryFailure(e);
                                     return;
                                 }
-
-                                futures.add(execPromise.toCompletableFuture());
+                                
+                                execPromise.onComplete(listener);
                             });
                         } else {
-                            futures.add(execPromise.toCompletableFuture());
+                            execPromise.onComplete(listener);
                         }
                     });
                 }
-
-                CompletableFuture<?> mainPromise = CompletableFuture.allOf(futures.toArray(new CompletableFuture[0]));
-                mainPromise.thenApply(s -> result)
-                            .whenComplete((res, ex) -> {
+                
+                mainPromise.onComplete((res, ex) -> {
                     executed.set(true);
                     if (ex != null) {
                         resultPromise.tryFailure(ex);