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Posted to commits@pulsar.apache.org by GitBox <gi...@apache.org> on 2021/02/14 08:42:25 UTC
[GitHub] [pulsar] MarvinCai opened a new issue #9582: Disable message negative ack for Key_Shared subscription type.
MarvinCai opened a new issue #9582:
URL: https://github.com/apache/pulsar/issues/9582
The message negative ack will break the message ordering dispatch guarantee, Key_Shared is an ordering dispatch guarantee subscription, so we should avoid the message negative ack for the Key_Shared subscription.
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[GitHub] [pulsar] codelipenghui closed issue #9582: Disable message negative ack for Key_Shared subscription type.
Posted by GitBox <gi...@apache.org>.
codelipenghui closed issue #9582:
URL: https://github.com/apache/pulsar/issues/9582
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[GitHub] [pulsar] MonicaMagoniCom commented on issue #9582: Disable message negative ack for Key_Shared subscription type.
Posted by GitBox <gi...@apache.org>.
MonicaMagoniCom commented on issue #9582:
URL: https://github.com/apache/pulsar/issues/9582#issuecomment-785126743
I also found this issue using Pulsar. We had to insert a timestamp to maintain the order of messages.
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[GitHub] [pulsar] MarvinCai edited a comment on issue #9582: Disable message negative ack for Key_Shared subscription type.
Posted by GitBox <gi...@apache.org>.
MarvinCai edited a comment on issue #9582:
URL: https://github.com/apache/pulsar/issues/9582#issuecomment-785234750
@MonicaMagoniCom Hi, please see the discussion in this pr: https://github.com/apache/pulsar/pull/9583
I think the community decided to still keep the ability for Key_Shared to do negative acknowledge since it's not all about ordering, e.g. guarantee message of same key go to same consumer, instead we added document to warn user that doing negative ack on order subscription type(exclusive, failover, key_shared) can cause message arrives out of original order.
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[GitHub] [pulsar] MarvinCai commented on issue #9582: Disable message negative ack for Key_Shared subscription type.
Posted by GitBox <gi...@apache.org>.
MarvinCai commented on issue #9582:
URL: https://github.com/apache/pulsar/issues/9582#issuecomment-785234750
@MonicaMagoniCom Hi, please see the discussion in this pr: https://github.com/apache/pulsar/pull/9583
I think we decided to still keep the ability for Key_Shared to do negative acknowledge since it's not all about ordering, e.g. guarantee message of same key go to same consumer, instead we added document to warn user that doing negative ack on order subscription type(exclusive, failover, key_shared) can cause message arrives out of original order.
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