[ratis] 03/17: RATIS-1607. Fix NPE in OrderedAsync#sendRequestWithRetry (#664)

[szetszwo]

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szetszwo pushed a commit to branch branch-2
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commit b4e20c6aaf0ac77e682aa12ae2801d417fa37463
Author: Sammi Chen <sammic...@apache.org>
AuthorDate: Thu Jun 30 22:57:28 2022 +0800

    RATIS-1607. Fix NPE in OrderedAsync#sendRequestWithRetry (#664)
---
 .../src/main/java/org/apache/ratis/client/impl/OrderedAsync.java      | 4 ++++
 1 file changed, 4 insertions(+)

diff --git 
a/ratis-client/src/main/java/org/apache/ratis/client/impl/OrderedAsync.java 
b/ratis-client/src/main/java/org/apache/ratis/client/impl/OrderedAsync.java
index 5bd85698..22515662 100644
--- a/ratis-client/src/main/java/org/apache/ratis/client/impl/OrderedAsync.java
+++ b/ratis-client/src/main/java/org/apache/ratis/client/impl/OrderedAsync.java
@@ -179,6 +179,10 @@ public final class OrderedAsync {
   }
 
   private void sendRequestWithRetry(PendingOrderedRequest pending) {
+    if (pending == null) {
+      return;
+    }
+
     final CompletableFuture<RaftClientReply> f = pending.getReplyFuture();
     if (f.isDone()) {
       return;