[jira] [Closed] (FLINK-6151) The zookeeper occur a warning when one node of zookeeper server is down

["Till Rohrmann (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-6151?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Till Rohrmann closed FLINK-6151.
--------------------------------
    Resolution: Not A Problem

Not a Flink problem.

> The zookeeper occur a warning when one node of zookeeper server is down
> -----------------------------------------------------------------------
>
>                 Key: FLINK-6151
>                 URL: https://issues.apache.org/jira/browse/FLINK-6151
>             Project: Flink
>          Issue Type: Bug
>          Components: Runtime / Coordination
>            Reporter: zhangrucong1982
>            Priority: Major
>
> I use the flink in yarn cluster of version 1.2.0.  The HA is configured in flink-conf.yaml.The configurations are :
> high-availability: zookeeper
> high-availability.zookeeper.quorum: 100.106.40.102:2181,100.106.57.136:2181,100.106.41.233:2181
> high-availability.zookeeper.storageDir: hdfs:/flink
> high-availability.zookeeper.client.acl: open
> high-availability.zookeeper.path.root:  flink0308
> zookeeper.sasl.disable: true
> The ZK version is 3.5.1.When one of ZK server node is down, the Flink client、JM、TM occur a following warning:
> 2017-03-22 10:14:06,196 INFO  org.apache.zookeeper.ClientCnxn                               - Opening socket connection to server 100.106.57.136/100.106.57.136:2181
> 2017-03-22 10:14:06,196 INFO  org.apache.zookeeper.ClientCnxn                               - Opening socket connection to server 100.106.57.136/100.106.57.136:2181
> 2017-03-22 10:14:06,197 WARN  org.apache.zookeeper.ClientCnxn                               - Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect
> java.net.ConnectException: Connection refused
>         at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
>         at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
>         at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:364)
>         at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1426)
> It seems the message is sent to the ZK server before the session is established.



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