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Posted to commits@pulsar.apache.org by GitBox <gi...@apache.org> on 2022/11/11 02:48:18 UTC

[GitHub] [pulsar] aloyszhang commented on pull request #18293: [fix][schema] Fix creating lots of versions for the same schema

aloyszhang commented on PR #18293:
URL: https://github.com/apache/pulsar/pull/18293#issuecomment-1311163670

   <img width="930" alt="image" src="https://user-images.githubusercontent.com/48062889/201251077-92c527e5-3869-4491-99be-d3e85d424913.png">
   @codelipenghui  This is another problem. The root cause is the concurrent access to zookeeper.
   Before updating the `schemaLocator` on zk, it reads zk again. The purpose is to obtain the content of the existing locator to build the index information of the new locator, and the version will be +1. 
    
   If other threads updated the locator just before this point, it directly adds the position information of a new schema entry to the locator without exist  check


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