HDFS-17673. unregister BalancerMetrics after each iteration in doBalance

jpyeron · jpyeron · commit 4715da6b9d45 · 2025-01-05T00:15:34.000-05:00
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/balancer/Balancer.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/balancer/Balancer.java
@@ -642,6 +642,7 @@ void resetData(Configuration conf) {
     this.underUtilized.clear();
     this.policy.reset();
     dispatcher.reset(conf);
+    if (metrics!=null) DefaultMetricsSystem.instance().unregisterSource(metrics.getName());
   }
 
   NameNodeConnector getNnc() {

Original file line number	Diff line number	Diff line change
`@@ -642,6 +642,7 @@ void resetData(Configuration conf) {`
`642`	`642`	`this.underUtilized.clear();`
`643`	`643`	`this.policy.reset();`
`644`	`644`	`dispatcher.reset(conf);`
	`645`	`+ if (metrics!=null) DefaultMetricsSystem.instance().unregisterSource(metrics.getName());`
`645`	`646`	`}`
`646`	`647`
`647`	`648`	`NameNodeConnector getNnc() {`