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Posted to dev@bookkeeper.apache.org by "Sijie Guo (JIRA)" <ji...@apache.org> on 2012/12/14 09:42:15 UTC

[jira] [Created] (BOOKKEEPER-505) FIFODeliveryManager runs at single thread.

Sijie Guo created BOOKKEEPER-505:
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             Summary: FIFODeliveryManager runs at single thread.
                 Key: BOOKKEEPER-505
                 URL: https://issues.apache.org/jira/browse/BOOKKEEPER-505
             Project: Bookkeeper
          Issue Type: Bug
          Components: hedwig-server
            Reporter: Sijie Guo
             Fix For: 4.3.0


A lots of things needs to run in FIFODeliveryManager, #startServingSubscription, #stopServingSubscriber, resuming throttled subscriber and delivering first message for each started subscriber. It would increment latency for delivering message or sending response for stopServingSubscriber (response for closeSubscription, or subscription event when force attach or topic release).

It is similar as what readahead cache happened before.

 

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