[fix][broker] http metric endpoint get compaction latency stats always be 0 (#24067)

Co-authored-by: 张浩 <[email protected]>

Author: zhanghaou

pulsar-broker/src/main/java/org/apache/pulsar/compaction/CompactionRecord.java

@@ -111,6 +111,7 @@ public long[] getCompactionLatencyBuckets() {
     }
 
     public StatsBuckets getCompactionLatencyStats() {
+        writeLatencyStats.refresh();
         return writeLatencyStats;
     }
 

pulsar-broker/src/test/java/org/apache/pulsar/compaction/CompactorMXBeanImplTest.java

@@ -20,6 +20,7 @@
 
 import static org.testng.Assert.assertEquals;
 import static org.testng.Assert.assertTrue;
+import org.apache.bookkeeper.mledger.util.StatsBuckets;
 import org.testng.annotations.Test;
 
 import java.util.concurrent.TimeUnit;
@@ -61,4 +62,17 @@ public void testSimple() throws Exception {
         assertTrue(compaction.getCompactionLatencyBuckets()[0] > 0L);
     }
 
+    @Test
+    public void testCompactionLatencyStatsAddAll() {
+        CompactorMXBeanImpl mxBean = new CompactorMXBeanImpl();
+        String topic = "topic2";
+        mxBean.addCompactionStartOp(topic);
+        CompactionRecord compaction = mxBean.getCompactionRecordForTopic(topic).get();
+        StatsBuckets compactionLatencyBuckets = new StatsBuckets(CompactionRecord.WRITE_LATENCY_BUCKETS_USEC);
+        mxBean.addCompactionLatencyOp(topic, 10, TimeUnit.NANOSECONDS);
+        compactionLatencyBuckets.addAll(compaction.getCompactionLatencyStats());
+        compactionLatencyBuckets.refresh();
+        assertTrue(compactionLatencyBuckets.getBuckets()[0] > 0L);
+    }
+
 }