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https://issues.apache.org/jira/browse/BOOKKEEPER-505?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sijie Guo updated BOOKKEEPER-505:
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Attachment: multiple_threads_delivery_manager.patch
quite straightforward a patch just move some common code into a
'DeliveryWorker' structure, and change HashMap to ConcucrrentHashMap, and
partition the requests by topic.
> 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
>
> Attachments: multiple_threads_delivery_manager.patch
>
>
> 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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