liudezhi2098 opened a new issue #6824:
URL: https://github.com/apache/pulsar/issues/6824
## Motivation
When sending messages asynchronously fails, an exception will be thrown, but
it is not known which message is abnormal, and the user does not know which
messages need to be retried。
## Proposed changes
This change can be supported on the client side, when throwing an
exception need to set sequenceId
org.apache.pulsar.client.api.PulsarClientException
```java
public class PulsarClientException extends IOException {
private long sequenceId = -1;
public PulsarClientException(String msg, long sequenceId) {
super(msg);
this.sequenceId = sequenceId;
}
```
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