3424672656 commented on code in PR #9131:
URL: https://github.com/apache/rocketmq/pull/9131#discussion_r1978507726
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broker/src/main/java/org/apache/rocketmq/broker/processor/PopRebalanceCacheManager.java:
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@@ -0,0 +1,79 @@
+package org.apache.rocketmq.broker.processor;
+
+import org.apache.rocketmq.common.constant.LoggerName;
+import org.apache.rocketmq.common.message.MessageQueue;
+import org.apache.rocketmq.logging.org.slf4j.Logger;
+import org.apache.rocketmq.logging.org.slf4j.LoggerFactory;
+import java.util.List;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.locks.Lock;
+import java.util.concurrent.locks.ReentrantLock;
+
+public class PopRebalanceCacheManager {
+
+ private static final long LOCK_TIMEOUT_MILLIS = 3000L;
+
+ private static final Logger log =
LoggerFactory.getLogger(LoggerName.BROKER_LOGGER_NAME);
+
+ // Cache with pop mode rebalancing under the condition that consumer
groups and queues remain unchanged
+ private final ConcurrentMap<String, ConcurrentHashMap<String,
Set<MessageQueue>>> loadBalanceDateTable = new ConcurrentHashMap<>();
Review Comment:
When the number of clients changes or the number of queues changes.
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