gaozhangmin commented on a change in pull request #10853:
URL: https://github.com/apache/pulsar/pull/10853#discussion_r647187187



##########
File path: 
pulsar-broker/src/main/java/org/apache/pulsar/broker/admin/v1/PersistentTopics.java
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@@ -662,6 +662,35 @@ public PersistentOfflineTopicStats 
getBacklog(@PathParam("property") String prop
         return internalGetBacklog(authoritative);
     }
 
+    @GET
+    
@Path("/{property}/{cluster}/{namespace}/{topic}/ledger/{ledgerId}/entry/{entryId}/checkLedgerExists/{checkLedgerExists}/backlogSize")

Review comment:
       for  calculating backlog size across partitions,  Firstly, We had 
checked if the target ledgerId existed on topics across partitions, We  should 
not check If the ledger exists on partitioned topic lately, because target 
ledger is only exists on one partition.




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