[improve][broker] Use shrink map for trackerCache (apache#19534)

Signed-off-by: xiaolongran <[email protected]>
BewareMyPower · Feb 16, 2023 · c0f89dc · c0f89dc
1 parent fe547c7
commit c0f89dc
Showing 1 changed file with 7 additions and 3 deletions.
diff --git a/pulsar-broker/src/main/java/org/apache/pulsar/broker/service/InMemoryRedeliveryTracker.java b/pulsar-broker/src/main/java/org/apache/pulsar/broker/service/InMemoryRedeliveryTracker.java
@@ -21,12 +21,16 @@
 import java.util.List;
 import org.apache.bookkeeper.mledger.Position;
 import org.apache.bookkeeper.mledger.impl.PositionImpl;
-import org.apache.bookkeeper.util.collections.ConcurrentLongLongPairHashMap;
-import org.apache.bookkeeper.util.collections.ConcurrentLongLongPairHashMap.LongPair;
+import org.apache.pulsar.common.util.collections.ConcurrentLongLongPairHashMap;
+import org.apache.pulsar.common.util.collections.ConcurrentLongLongPairHashMap.LongPair;
 
 public class InMemoryRedeliveryTracker implements RedeliveryTracker {
 
-    private ConcurrentLongLongPairHashMap trackerCache = new ConcurrentLongLongPairHashMap(256, 1);
+    private ConcurrentLongLongPairHashMap trackerCache = ConcurrentLongLongPairHashMap.newBuilder()
+            .concurrencyLevel(1)
+            .expectedItems(256)
+            .autoShrink(true)
+            .build();
 
     @Override
     public int incrementAndGetRedeliveryCount(Position position) {