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https://issues.apache.org/jira/browse/ZOOKEEPER-3456?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16880877#comment-16880877
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maoling commented on ZOOKEEPER-3456:
------------------------------------
[~Mar_zieh]
At the first, I think you should *ping* or *telnet* the server2 from other node
to check the network issue
> Service temporarily unavailable due to an ongoing leader election. Please
> refresh
> ---------------------------------------------------------------------------------
>
> Key: ZOOKEEPER-3456
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3456
> Project: ZooKeeper
> Issue Type: Bug
> Components: server
> Environment: docker container with Ubuntu 16.04
> Reporter: Marzieh
> Priority: Major
> Fix For: 3.4.14
>
>
> Hi
> I configured Zookeeper with four nodes for my Mesos cluster with Marathon.
> When I ran Flink Json file on Marathon, it was run without problem. But, when
> I entered IP of my two slaves, just one slave shew Flink UI and another slave
> shew this error:
>
> Service temporarily unavailable due to an ongoing leader election. Please
> refresh
> I checked "zookeeper.out" file and it said that :
>
> 019-07-07 11:48:43,412 [myid:] - INFO [main:QuorumPeerConfig@136] - Reading
> configuration from: /home/zookeeper-3.4.14/bin/../conf/zoo.cfg
> 2019-07-07 11:48:43,421 [myid:] - INFO [main:QuorumPeer$QuorumServer@185] -
> Resolved hostname: 0.0.0.0 to address: /0.0.0.0
> 2019-07-07 11:48:43,421 [myid:] - INFO [main:QuorumPeer$QuorumServer@185] -
> Resolved hostname: 10.32.0.3 to address: /10.32.0.3
> 2019-07-07 11:48:43,422 [myid:] - INFO [main:QuorumPeer$QuorumServer@185] -
> Resolved hostname: 10.32.0.2 to address: /10.32.0.2
> 2019-07-07 11:48:43,422 [myid:] - INFO [main:QuorumPeer$QuorumServer@185] -
> Resolved hostname: 10.32.0.5 to address: /10.32.0.5
> 2019-07-07 11:48:43,422 [myid:] - WARN [main:QuorumPeerConfig@354] -
> Non-optimial configuration, consider an odd number of servers.
> 2019-07-07 11:48:43,422 [myid:] - INFO [main:QuorumPeerConfig@398] -
> Defaulting to majority quorums
> 2019-07-07 11:48:43,425 [myid:3] - INFO [main:DatadirCleanupManager@78] -
> autopurge.snapRetainCount set to 3
> 2019-07-07 11:48:43,425 [myid:3] - INFO [main:DatadirCleanupManager@79] -
> autopurge.purgeInterval set to 0
> 2019-07-07 11:48:43,425 [myid:3] - INFO [main:DatadirCleanupManager@101] -
> Purge task is not scheduled.
> 2019-07-07 11:48:43,432 [myid:3] - INFO [main:QuorumPeerMain@130] - Starting
> quorum peer
> 2019-07-07 11:48:43,437 [myid:3] - INFO [main:ServerCnxnFactory@117] - Using
> org.apache.zookeeper.server.NIOServerCnxnFactory as server connect$
> 2019-07-07 11:48:43,439 [myid:3] - INFO [main:NIOServerCnxnFactory@89] -
> binding to port 0.0.0.0/0.0.0.0:2181
> 2019-07-07 11:48:43,440 [myid:3] - ERROR [main:QuorumPeerMain@92] -
> Unexpected exception, exiting abnormally
> java.net.BindException: Address already in use
> at sun.nio.ch.Net.bind0(Native Method)
> at sun.nio.ch.Net.bind(Net.java:433)
> at sun.nio.ch.Net.bind(Net.java:425)
> at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
> at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
> at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:67)
> at
> org.apache.zookeeper.server.NIOServerCnxnFactory.configure(NIOServerCnxnFactory.java:90)
> at
> org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:133)
> at
> org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:114)
> at
> org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:81)
>
> I searched a lot and could not find the solution.
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