[GitHub] [pulsar] littleorca commented on issue #11282: NPE in OpReadEntry

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

littleorca commented on issue #11282:
URL: https://github.com/apache/pulsar/issues/11282#issuecomment-897304788


   > @littleorca I am a litter confused for the NPE in `cursor.readOperationCompleted()`, would you please provide the stack of the NPE?
   
   Try this test case:
   
   ```java
       @Test
       public void readEntryNPE() throws Exception {
           MetadataStore metadataStore = new ZKMetadataStore(ZK_CONNECTION, MetadataStoreConfig.builder().build());
           ClientConfiguration bkClientConf = new ClientConfiguration();
           bkClientConf.setMetadataServiceUri(METADATA_SERVICE_URI);
           ManagedLedgerFactoryImpl factory = new ManagedLedgerFactoryImpl(metadataStore, bkClientConf);
           ManagedLedger ml = factory.open(ML_NAME);
           ManagedCursor c = ml.openCursor(CURSOR_NAME);
           Position pos = ml.addEntry("Hello world!".getBytes(StandardCharsets.UTF_8));
           c.close();
           ml.close();
           factory.shutdown();
   
           factory = new ManagedLedgerFactoryImpl(metadataStore, bkClientConf);
           ml = factory.open(ML_NAME);
           c = ml.openCursor(CURSOR_NAME);
           c.markDelete(pos);
           ml.terminate();
           ml.close();
           factory.shutdown();
   
           factory = new ManagedLedgerFactoryImpl(metadataStore, bkClientConf);
           ml = factory.open(ML_NAME);
           c = ml.openCursor(CURSOR_NAME);
           c.seek(pos);
           c.readEntries(1);
       }
   ```
   


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