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Posted to commits@pulsar.apache.org by GitBox <gi...@apache.org> on 2022/12/01 12:32:14 UTC

[GitHub] [pulsar] thetumbled opened a new issue, #18703: [improve] too much spent on creating writer while initializing Transaction Buffer.

thetumbled opened a new issue, #18703:
URL: https://github.com/apache/pulsar/issues/18703

   ### Search before asking
   
   - [X] I searched in the [issues](https://github.com/apache/pulsar/issues) and found nothing similar.
   
   
   ### Motivation
   
   While testing transactional feature in **pulsar 2.9.x**, i find that the unavailable time spent on initializing TB is too long, which is unacceptable. 
    Restarting brokers will triggering bundle unloading and loading and reinitializing TB corresponding to topics, which will cause into a few minutes of unavailable time. 
   And i do some logs to find which part of the code  is time-consuming. 
   
   <img width="598" alt="image" src="https://user-images.githubusercontent.com/52550727/205051819-88a0fe6e-91ce-4429-83f6-8b0c38f18fc9.png">
   
   The result is that **most of the time is spent on waiting for creating `takeSnapshotWriter`**. But it seems that there is no need to use `takeSnapshotWriter` while recovering TB, and there is no such kind of waiting in the master branch of pulsar. 
   
   
   ### Solution
   
   remove waiting for  creating `takeSnapshotWriter` in pulsar 2.9.x .
   
   ### Alternatives
   
   _No response_
   
   ### Anything else?
   
   _No response_
   
   ### Are you willing to submit a PR?
   
   - [X] I'm willing to submit a PR!


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[GitHub] [pulsar] thetumbled closed issue #18703: [improve] Too much time spent on waiting writer creation while initializing Transaction Buffer.

Posted by GitBox <gi...@apache.org>.
thetumbled closed issue #18703: [improve] Too much time spent on waiting writer creation while initializing Transaction Buffer.
URL: https://github.com/apache/pulsar/issues/18703


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[GitHub] [pulsar] tjiuming commented on issue #18703: [improve] Too much time spent on waiting writer creation while initializing Transaction Buffer.

Posted by GitBox <gi...@apache.org>.
tjiuming commented on issue #18703:
URL: https://github.com/apache/pulsar/issues/18703#issuecomment-1360020505

   this issue fixed in https://github.com/apache/pulsar/pull/17847


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