[GitHub] [pulsar] codelipenghui edited a comment on issue #5727: NPE when create message meta builder

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

codelipenghui edited a comment on issue #5727: NPE when create message meta builder
URL: https://github.com/apache/pulsar/issues/5727#issuecomment-557795140
 
 
   The following demo can reproduce:
   
   ```java
   PulsarClient client = PulsarClient.builder().serviceUrl("pulsar://127.0.0.1:6650").build();
           Producer<byte[]> producer = client.newProducer().topic("test").create();
           TypedMessageBuilder<byte[]> messageBuilder = producer.newMessage();
           for (int i = 0; i < 1000; i++) {
               messageBuilder.key(i + "").value(new byte[128]).sendAsync();
           }
   ```
   It's better to add check for TypedMessageBuilder, because it can only send once.
   

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