From 2eb7246ea754af456350723e5ea8ec397c1eb1f5 Mon Sep 17 00:00:00 2001
From: hfutatzhanghb <hfutzhanghb@163.com>
Date: Thu, 21 Mar 2024 11:41:35 +0800
Subject: [PATCH] HDFS-17433. metrics sumOfActorCommandQueueLength should only
 record valid commands. (#6644)

---
 .../apache/hadoop/hdfs/server/datanode/BPServiceActor.java  | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPServiceActor.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPServiceActor.java
index 462b9df3c9..da30d05796 100755
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPServiceActor.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BPServiceActor.java
@@ -1487,8 +1487,10 @@ void enqueue(List<DatanodeCommand> cmds) throws InterruptedException {
     }
 
     void enqueue(DatanodeCommand[] cmds) throws InterruptedException {
-      queue.put(() -> processCommand(cmds));
-      dn.getMetrics().incrActorCmdQueueLength(1);
+      if (cmds.length != 0) {
+        queue.put(() -> processCommand(cmds));
+        dn.getMetrics().incrActorCmdQueueLength(1);
+      }
     }
   }