hozumi commented on issue #7500: URL: https://github.com/apache/pulsar/issues/7500#issuecomment-660198086
> if SubscriptionInitialPosition.Earliest creates a subscription from the earliest message in Retention storage. How can we create a subscription with the earliest position in topic backlogQuota/ earliest unacknowledged message? @rvashishth According to Addison Higham, the message in a topic itself does not have an acknowledged flag, and just each subscription have a backlog, which tracks unacknowledged messages. Therefore, the earliest position of unacknowledged messages varies from subscription to subscription. https://apache-pulsar.slack.com/archives/C5Z4T36F7/p1594358745127000?thread_ts=1594348193.122700&cid=C5Z4T36F7 > A subscription is basically a pointer into a topic, talking about acknowledged messages only really applies to a subscription, not the underlying topic ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
