[GitHub] [hadoop] ZanderXu commented on a diff in pull request #5671: HDFS-17019. Optimize the logic for reconfigure slow peer enable for Namenode"

["ZanderXu (via GitHub)" <gi...@apache.org>]

ZanderXu commented on code in PR #5671:
URL: https://github.com/apache/hadoop/pull/5671#discussion_r1201570774


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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeManager.java:
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@@ -376,10 +373,14 @@ public void initSlowPeerTracker(Configuration conf, Timer timer,
     this.slowPeerTracker = dataNodePeerStatsEnabled ?
         new SlowPeerTracker(conf, timer) :
         new SlowPeerDisabledTracker(conf, timer);
+    if (slowPeerTracker.isSlowPeerTrackerEnabled()) {
+      startSlowPeerCollector();
+    }

Review Comment:
   should we stop the running thread if `slowPeerTracker.isSlowPeerTrackerEnabled()` return `false`?



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