[jira] [Created] (ZOOKEEPER-4253) I connected to ZooKeeper at different times, but I got the same session ID

["Damon Liu (Jira)" <ji...@apache.org>]

Damon Liu created ZOOKEEPER-4253:
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             Summary: I connected to ZooKeeper at different times, but I got the same session ID
                 Key: ZOOKEEPER-4253
                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-4253
             Project: ZooKeeper
          Issue Type: Bug
          Components: java client
    Affects Versions: 3.4.13
            Reporter: Damon Liu
         Attachments: zookeeper.log

I have an app AA connect to  zookeeper and register a temporary path such as /brokers/ids/10，and I have another app BB also connect to zookeeper. At some point, AA BB and ZooKeeper both restarted

before restart:

AA connect log in zk : [2021-03-07 08:47:43,468] INFO [SyncThread:0] Established session {color:#FF0000}0x10000053ef90000{color} with negotiated timeout 8000 for client /{color:#FF0000}22.20.0.45{color}:59966 (org.apache.zookeeper.server.ZooKeeperServer)

after restart:

BB connect log in zk:[2021-03-07 08:58:51,351] INFO [SyncThread:0] Established session {color:#FF0000}0x10000053ef90000{color} with negotiated timeout 30000 for client /{color:#FF0000}22.20.0.47{color}:39360 (org.apache.zookeeper.server.ZooKeeperServer)

 

I understand that when ZooKeeper restarts, the transaction log and snapshot files will be loaded, and the old session({color:#FF0000}0x10000053EF90000{color}) and the temporary path will be loaded,If App BB gets the old session {color:#FF0000}0x10000053EF90000{color}, the session will not expire, the temporary path（/brokers/ids/10） will not be deleted, and App AA will not be able to re-register the temporary path(/brokers/ids/10)。

That's my question，looking forward to your help. Thank you.

 

 



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