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

Signed-off-by: xiaolongran <[email protected]> (cherry picked from commit c0f89dc)
apache · Mar 1, 2023 · a1d56d2 · a1d56d2
1 parent da68adb
commit a1d56d2
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) {