Details
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Bug
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Status: Closed
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Major
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Resolution: Fixed
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3.5.6, 3.5.7
Description
Not sure if this is the place to ask, please close if it's not.
I am seeing some behavior that I can't explain since upgrading to 3.5:
In a 5 member quorum, when server 3 is the leader and each server has this in their configuration:
server.1=100.71.255.254:2888:3888:participant;2181 server.2=100.71.255.253:2888:3888:participant;2181 server.3=100.71.255.252:2888:3888:participant;2181 server.4=100.71.255.251:2888:3888:participant;2181 server.5=100.71.255.250:2888:3888:participant;2181
If servers 1 or 2 are restarted, they fail to rejoin the quorum with this in the logs:
2020-03-11 20:23:35,720 [myid:2] - INFO [QuorumPeer[myid=2](plain=0.0.0.0:2181)(secure=disabled):QuorumPeer@1175] - LOOKING 2020-03-11 20:23:35,721 [myid:2] - INFO [QuorumPeer[myid=2](plain=0.0.0.0:2181)(secure=disabled):FastLeaderElection@885] - New election. My id = 2, proposed zxid=0x1b8005f4bba 2020-03-11 20:23:35,733 [myid:2] - INFO [WorkerSender[myid=2]:QuorumCnxManager@438] - Have smaller server identifier, so dropping the connection: (3, 2) 2020-03-11 20:23:35,734 [myid:2] - INFO [0.0.0.0/0.0.0.0:3888:QuorumCnxManager$Listener@924] - Received connection request 100.126.116.201:36140 2020-03-11 20:23:35,735 [myid:2] - INFO [WorkerSender[myid=2]:QuorumCnxManager@438] - Have smaller server identifier, so dropping the connection: (4, 2) 2020-03-11 20:23:35,740 [myid:2] - INFO [WorkerSender[myid=2]:QuorumCnxManager@438] - Have smaller server identifier, so dropping the connection: (5, 2) 2020-03-11 20:23:35,740 [myid:2] - INFO [0.0.0.0/0.0.0.0:3888:QuorumCnxManager$Listener@924] - Received connection request 100.126.116.201:36142 2020-03-11 20:23:35,740 [myid:2] - INFO [WorkerReceiver[myid=2]:FastLeaderElection@679] - Notification: 2 (message format version), 2 (n.leader), 0x1b8005f4bba (n.zxid), 0x1 (n.round), LOOKING (n.state), 2 (n.sid), 0x1b8 (n.peerEPoch), LOOKING (my state)0 (n.config version) 2020-03-11 20:23:35,742 [myid:2] - WARN [SendWorker:3:QuorumCnxManager$SendWorker@1143] - Interrupted while waiting for message on queue java.lang.InterruptedException at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.reportInterruptAfterWait(AbstractQueuedSynchronizer.java:2014) at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2088) at java.util.concurrent.ArrayBlockingQueue.poll(ArrayBlockingQueue.java:418) at org.apache.zookeeper.server.quorum.QuorumCnxManager.pollSendQueue(QuorumCnxManager.java:1294) at org.apache.zookeeper.server.quorum.QuorumCnxManager.access$700(QuorumCnxManager.java:82) at org.apache.zookeeper.server.quorum.QuorumCnxManager$SendWorker.run(QuorumCnxManager.java:1131) 2020-03-11 20:23:35,744 [myid:2] - WARN [SendWorker:3:QuorumCnxManager$SendWorker@1153] - Send worker leaving thread id 3 my id = 2 2020-03-11 20:23:35,745 [myid:2] - WARN [RecvWorker:3:QuorumCnxManager$RecvWorker@1230] - Interrupting SendWorker
The only way I can seem to get them to rejoin the quorum is to restart the leader.
However, if I remove server 4 and 5 from the configuration of server 1 or 2 (so only servers 1, 2, and 3 remain in the configuration file), then they can rejoin the quorum fine. Is this expected and am I doing something wrong? Any help or explanation would be greatly appreciated. Thank you.
Attachments
Attachments
Issue Links
- is related to
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- Closed
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- relates to
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ZOOKEEPER-3838 Async handling of quorum connection requests, including SSL handshakes
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- Open
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- links to
