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Posted to dev@zookeeper.apache.org by "Fangmin Lv (JIRA)" <ji...@apache.org> on 2018/10/16 15:25:00 UTC

[jira] [Created] (ZOOKEEPER-3178) Remove PrepRequestProcessor from RO ZooKeeperServer to avoid txns being created in RO mode

Fangmin Lv created ZOOKEEPER-3178:
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             Summary: Remove PrepRequestProcessor from RO ZooKeeperServer to avoid txns being created in RO mode
                 Key: ZOOKEEPER-3178
                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3178
             Project: ZooKeeper
          Issue Type: Bug
          Components: server
            Reporter: Fangmin Lv
            Assignee: Fangmin Lv
             Fix For: 3.6.0


For some reason, the ReadOnlyZooKeeperServer was implemented with PrepRequestProcessor, which is meaningless and error-prone, since all it does is preparing txn, and we shouldn't allow txns being created on non-leader server.
 
This will cause dangling global session on RO observer, because the createSession is being generated, and the code thought it's global session and added to Snapshot.
 



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