From 4fdeac122888e72bf3651ae0bacf204d1fac93f0 Mon Sep 17 00:00:00 2001
From: Jim Brennan <jbrennan@apache.org>
Date: Thu, 15 Jul 2021 20:59:09 +0000
Subject: [PATCH] HDFS-16042. DatanodeAdminMonitor scan should be delay based.
 Contributed by Ahmed Hussein.

---
 .../hdfs/server/blockmanagement/DatanodeAdminManager.java       | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeAdminManager.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeAdminManager.java
index ce92151cd04..4c7fc5f0901 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeAdminManager.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeAdminManager.java
@@ -182,7 +182,7 @@ public class DatanodeAdminManager {
         + DFSConfigKeys.DFS_NAMENODE_DECOMMISSION_MAX_CONCURRENT_TRACKED_NODES);
 
     monitor = new Monitor(blocksPerInterval, maxConcurrentTrackedNodes);
-    executor.scheduleAtFixedRate(monitor, intervalSecs, intervalSecs,
+    executor.scheduleWithFixedDelay(monitor, intervalSecs, intervalSecs,
         TimeUnit.SECONDS);
 
     LOG.debug("Activating DatanodeAdminManager with interval {} seconds, " +