drpmma commented on code in PR #6291:
URL: https://github.com/apache/rocketmq/pull/6291#discussion_r1130295144
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client/src/main/java/org/apache/rocketmq/client/latency/LatencyFaultToleranceImpl.java:
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@@ -22,27 +22,18 @@
import java.util.LinkedList;
import java.util.List;
import java.util.concurrent.ConcurrentHashMap;
+
import org.apache.rocketmq.client.common.ThreadLocalIndex;
public class LatencyFaultToleranceImpl implements
LatencyFaultTolerance<String> {
- private final ConcurrentHashMap<String, FaultItem> faultItemTable = new
ConcurrentHashMap<>(16);
+ private final ConcurrentHashMap<String/*broker name*/, FaultItem>
faultItemTable = new ConcurrentHashMap<>(16);
private final ThreadLocalIndex randomItem = new ThreadLocalIndex();
@Override
public void updateFaultItem(final String name, final long currentLatency,
final long notAvailableDuration) {
- FaultItem old = this.faultItemTable.get(name);
- if (null == old) {
- final FaultItem faultItem = new FaultItem(name);
- faultItem.setCurrentLatency(currentLatency);
- faultItem.setStartTimestamp(System.currentTimeMillis() +
notAvailableDuration);
-
- old = this.faultItemTable.putIfAbsent(name, faultItem);
- if (old != null) {
- old.setCurrentLatency(currentLatency);
- old.setStartTimestamp(System.currentTimeMillis() +
notAvailableDuration);
- }
- } else {
+ FaultItem old = this.faultItemTable.putIfAbsent(name, new
FaultItem(name, currentLatency, System.currentTimeMillis() +
notAvailableDuration));
Review Comment:
Maybe computeIfAbsent is more suitable for reducing extra object creation.
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