GitHub user jak78 added a comment to the discussion: does Pulsar has data 
repair mechanism like read repair in Cassandra?

Hi @huangydyn! Pulsar uses BookKeeper as persistence storage, and BookKeeper 
has an _AutoRecovery_ mechanism. It is responsible for bringing the cluster 
back to full replication. You will find the documentation here: 
https://bookkeeper.apache.org/docs/admin/autorecovery/ 
You can also watch this video to know more: 
https://www.youtube.com/watch?v=w14OoOUkyvo


GitHub link: 
https://github.com/apache/pulsar/discussions/19734#discussioncomment-5227725

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