From d9537b5a74d59a4da9df45a9f917a18ba1108dae Mon Sep 17 00:00:00 2001
From: Nikita <abracham.mitchell@gmail.com>
Date: Mon, 11 Dec 2017 17:32:26 +0300
Subject: [PATCH] NPE fixed

---
 .../src/main/java/org/redisson/command/CommandAsyncService.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/redisson/src/main/java/org/redisson/command/CommandAsyncService.java b/redisson/src/main/java/org/redisson/command/CommandAsyncService.java
index 5ea9c4628..699290e2b 100644
--- a/redisson/src/main/java/org/redisson/command/CommandAsyncService.java
+++ b/redisson/src/main/java/org/redisson/command/CommandAsyncService.java
@@ -536,7 +536,7 @@ public class CommandAsyncService implements CommandAsyncExecutor {
                     if (details.getConnectionFuture().isSuccess()) {
                         if (details.getWriteFuture() == null || !details.getWriteFuture().isDone()) {
                             if (details.getAttempt() == connectionManager.getConfig().getRetryAttempts()) {
-                                if (details.getWriteFuture().cancel(false)) {
+                                if (details.getWriteFuture() != null && details.getWriteFuture().cancel(false)) {
                                     if (details.getException() == null) {
                                         details.setException(new RedisTimeoutException("Unable to send command: " + command + " with params: " + LogHelper.toString(details.getParams()) + " after " + connectionManager.getConfig().getRetryAttempts() + " retry attempts"));
                                     }