[GitHub] [pulsar] codelipenghui commented on a change in pull request #11304: [Transaction] Fix transaction buffer client handle endTxn op when topic or sub have been deleted.

[GitBox <gi...@apache.org>]

codelipenghui commented on a change in pull request #11304:
URL: https://github.com/apache/pulsar/pull/11304#discussion_r684884709



##########
File path: managed-ledger/src/main/java/org/apache/bookkeeper/mledger/ManagedLedgerFactory.java
##########
@@ -160,4 +161,14 @@ void asyncOpenReadOnlyCursor(String managedLedgerName, Position startPosition, M
      */
     void shutdown() throws InterruptedException, ManagedLedgerException;
 
+    /**
+     * Check managed ledger store has been initialized before.
+     *
+     * @param name {@link String}
+     * @return a future represents the result of the operation.
+     *         an instance of {@link Boolean} is returned
+     *         if the operation succeeds.
+     */
+    CompletableFuture<Boolean> checkManagedLedgerInitializedBefore(String name);

Review comment:
       ```suggestion
       CompletableFuture<Boolean> asyncExists(String name);
   ```

##########
File path: managed-ledger/src/main/java/org/apache/bookkeeper/mledger/impl/MetaStore.java
##########
@@ -129,4 +131,14 @@ void asyncUpdateCursorInfo(String ledgerName, String cursorName, ManagedCursorIn
      * @throws MetaStoreException
      */
     Iterable<String> getManagedLedgers() throws MetaStoreException;
+
+    /**
+     * Check path exists.
+     *
+     * @param path {@link String}
+     * @return a future represents the result of the operation.
+     *         an instance of {@link Boolean} is returned
+     *         if the operation succeeds.
+     */
+    CompletableFuture<Boolean> exists(String path);

Review comment:
       ```suggestion
       CompletableFuture<Boolean> asyncExists(String ledgerName);
   ```




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