sijie commented on a change in pull request #9284:
URL: https://github.com/apache/pulsar/pull/9284#discussion_r563014756



##########
File path: 
pulsar-broker/src/test/java/org/apache/pulsar/broker/admin/AdminApiSchemaTest.java
##########
@@ -213,4 +228,113 @@ public void createKeyValueSchema() throws Exception {
 
         assertEquals(schemaInfo, keyValueSchema.getSchemaInfo());
     }
+
+    @Test void getTopicIntervalStateIncludeSchemaStoreLedger() throws 
PulsarAdminException {

Review comment:
       ```suggestion
       @Test 
       void getTopicIntervalStateIncludeSchemaStoreLedger() throws 
PulsarAdminException {
   ```

##########
File path: 
pulsar-broker/src/main/java/org/apache/pulsar/broker/service/persistent/PersistentTopic.java
##########
@@ -1774,14 +1776,71 @@ public TopicStats getStats(boolean getPreciseBacklog) {
             cs.properties = cursor.getProperties();
             stats.cursors.put(cursor.getName(), cs);
         });
-        if (futures != null) {
-            FutureUtil.waitForAll(futures).handle((res, ex) -> {
-                statFuture.complete(stats);
+
+        //Schema store ledgers
+        String schemaId;
+        try {
+            schemaId = TopicName.get(topic).getSchemaName();
+        } catch (Throwable t) {
+            statFuture.completeExceptionally(t);
+            return statFuture;
+        }
+
+
+        CompletableFuture<Void> schemaStoreLedgersFuture = new 
CompletableFuture<>();
+        stats.schemaLedgers = new ArrayList<>();
+        if (brokerService.getPulsar().getSchemaStorage() != null
+                && brokerService.getPulsar().getSchemaStorage() instanceof 
BookkeeperSchemaStorage) {
+            ((BookkeeperSchemaStorage) 
brokerService.getPulsar().getSchemaStorage())
+                    .getStoreLedgerIdsBySchemaId(schemaId)
+                    .thenAccept(ledgers -> {
+                        List<CompletableFuture<Void>> getLedgerMetadataFutures 
= new ArrayList<>();
+                        ledgers.forEach(ledgerId -> {
+                            CompletableFuture<Void> completableFuture = new 
CompletableFuture<>();
+                            getLedgerMetadataFutures.add(completableFuture);
+                            brokerService.getPulsar().getBookKeeperClient()
+                                    .getLedgerMetadata(ledgerId)
+                                    .thenAccept(metadata -> {
+                                        LedgerInfo schemaLedgerInfo = new 
LedgerInfo();
+                                        schemaLedgerInfo.ledgerId = 
metadata.getLedgerId();
+                                        schemaLedgerInfo.entries = 
metadata.getLastEntryId() + 1;
+                                        schemaLedgerInfo.size = 
metadata.getLength();
+                                        if (includeLedgerMetadata) {
+                                            info.metadata = 
metadata.toSafeString();
+                                        }
+                                        
stats.schemaLedgers.add(schemaLedgerInfo);

Review comment:
       you need to synchronize `stats.schemaLedgers`. 




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