Reader.has_message_available() returns True even if no messages to consume, when start_message_id is earliest #199
Description
Hi,
Reader.has_message_available() returns True on first execution, even if no message available on topic. Issue is only, when reader is created with start_message_id=pulsar.MessageId.earliest,
Environment:
Python 3.11.5
pulsar-client 3.4.0
Reproduction
- Create reader with start_message_id=pulsar.MessageId.earliest:
from my_schemas import Schema
import pulsar
pulsar_url = "localhost"
topic = "tenant/namespace/topic"
name = "name"
schema = pulsar.schema.AvroSchema(Schema)
client = pulsar.Client(pulsar_url)
reader = client.create_reader(
topic=topic,
start_message_id=pulsar.MessageId.earliest,
schema=schema,
reader_name=name,
)
- Seek MessageId.latest or timestamp after point, where is no more messages
reader.seek(pulsar.MessageId.latest)
- read messages until no more messages available
while reader.has_message_available(): # It is True on first iteration but should be False
msg = reader.read_next(timeout_millis=5000)
print("No more messages")
At point 3 I should get info log "No more messages", but I got Timeout exception.