Lanayx opened a new issue #10515:
URL: https://github.com/apache/pulsar/issues/10515
**Describe the bug**
I want to read messages starting from some timestamp, for that I use
`startMessageFromRollbackDuration` configuration. If there are messages
available i expect `hasMessageAvailable` to return true, and if no messages are
available it should return false. However it still returns true in the latter
cast.
**To Reproduce**
```java
Producer<byte[]> producer = client.newProducer()
.topic(topicName)
.enableBatching(false)
.sendTimeout(0, TimeUnit.MILLISECONDS)
.create();
MessageId msgId =
producer.newMessage().value(("Hello").getBytes()).send();
Thread.sleep(4000);
Reader<byte[]> reader = client.newReader()
.topic(topicName)
.startMessageFromRollbackDuration(1, TimeUnit.SECONDS)
.create();
Boolean result = reader.hasMessageAvailable();
System.out.printf("Result: %b\n", result); // returns true
```
**Expected behavior**
HasMessageAvailable should return false in the case above
**Additional context**
Client version 2.7.1 (reproduced in previous versions as well)
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