ChenSammi commented on code in PR #5216:
URL: https://github.com/apache/ozone/pull/5216#discussion_r1322406495


##########
hadoop-hdds/container-service/src/main/java/org/apache/hadoop/ozone/container/replication/ReplicationServer.java:
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@@ -180,6 +185,18 @@ public static final class ReplicationConfig {
     )
     private int replicationMaxStreams = REPLICATION_MAX_STREAMS_DEFAULT;
 
+    /**
+     * The maximum of replication request queue length.
+     */
+    @Config(key = QUEUE_LIMIT,
+        type = ConfigType.INT,
+        defaultValue = "4096",

Review Comment:
   I guess 4096 this value is picked for the moment based on experience, @z-bb 
, right? 
   And Guangbao, do you remember the the biggest queue length you have ever 
seen before without the queue limitation imposed? 



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