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Posted to issues@zookeeper.apache.org by "pengfei (Jira)" <ji...@apache.org> on 2020/12/28 10:27:00 UTC

[jira] [Created] (ZOOKEEPER-4040) java.io.IOException: Leaders epoch, 1 is less than accepted epoch, 2

pengfei created ZOOKEEPER-4040:
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             Summary: java.io.IOException: Leaders epoch, 1 is less than accepted epoch, 2
                 Key: ZOOKEEPER-4040
                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-4040
             Project: ZooKeeper
          Issue Type: Bug
          Components: server
    Affects Versions: 3.5.5
            Reporter: pengfei
         Attachments: image-2020-12-28-18-20-07-842.png, image-2020-12-28-18-23-14-073.png, image-2020-12-28-18-25-31-960.png, image-2020-12-28-18-28-07-015.png

h4. errorlog:

java.io.IOException: Leaders epoch, 1 is less than accepted epoch, 2java.io.IOException: Leaders epoch, 1 is less than accepted epoch, 2 at org.apache.zookeeper.server.quorum.Learner.registerWithLeader(Learner.java:353) at org.apache.zookeeper.server.quorum.Follower.followLeader(Follower.java:78) at org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:1271)2020-12-28 18:09:25,176 [myid:2] - INFO  [QuorumPeer[myid=2](plain=/0:0:0:0:0:0:0:0:2182)(secure=disabled):Follower@201] - shutdown calledjava.lang.Exception: shutdown Follower at org.apache.zookeeper.server.quorum.Follower.shutdown(Follower.java:201) at org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:1275)

 
h4. sample:

cluster all servers server1,server2,server3
 * start server1 and server2 ,then shutdown them when they arrive below, now the accpetedEpoch of server2 is 1 , server1 is 0, server3 is 0 !image-2020-12-28-18-23-14-073.png!
 * then repeat step 1 , now the accpetedEpoch of server1 is 0,server2 is 2,server3 is 0 !image-2020-12-28-18-25-31-960.png!
 * then start server1 and server3 , wait unti the leader of the cluster is server3 , start server2 ,now generate the error below !image-2020-12-28-18-28-07-015.png!



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