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https://issues.apache.org/jira/browse/FLINK-18733?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17165756#comment-17165756
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Till Rohrmann commented on FLINK-18733:
---------------------------------------
Thanks for reporting this issue [~lilyevsky]. Could you share with us the
cluster logs for further debugging? It would also be helpful to better
understand in which environment you are deploying Flink. We bumped the
ZooKeeper version from {{3.4.10}} to {{3.4.14}} for the {{1.11.0}} release
(FLINK-18042). This change might be causing the problems you are observing.
> Jobmanager cannot start in HA mode with Zookeeper
> -------------------------------------------------
>
> Key: FLINK-18733
> URL: https://issues.apache.org/jira/browse/FLINK-18733
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Coordination
> Affects Versions: 1.11.1
> Reporter: Leonid Ilyevsky
> Priority: Major
>
> When configured in HA mode, the Jobmanager cannot start at all. First, it
> issues warnings like this:
> {quote}{{2020-07-27 08:58:23,197 WARN
> org.apache.flink.shaded.zookeeper3.org.apache.zookeeper.ClientCnxn [] -
> Session 0x0 for server *nj1dvloglab01.liquidnet.biz/<unresolved>:2181*,
> unexpected error, closing socket connection and attempting reconnect}}
> {{java.lang.IllegalArgumentException: *Unable to canonicalize address*
> nj1dvloglab01.liquidnet.biz/<unresolved>:2181 because it's not resolvable}}
> {{ at
> org.apache.flink.shaded.zookeeper3.org.apache.zookeeper.SaslServerPrincipal.getServerPrincipal(SaslServerPrincipal.java:65)
> ~[flink-shaded-zookeeper-3.4.14.jar:3.4.14-11.0]}}
> {{ at
> org.apache.flink.shaded.zookeeper3.org.apache.zookeeper.SaslServerPrincipal.getServerPrincipal(SaslServerPrincipal.java:41)
> ~[flink-shaded-zookeeper-3.4.14.jar:3.4.14-11.0]}}
> {{ at
> org.apache.flink.shaded.zookeeper3.org.apache.zookeeper.ClientCnxn$SendThread.startConnect(ClientCnxn.java:1001)
> ~[flink-shaded-zookeeper-3.4.14.jar:3.4.14-11.0]}}
> {{ at
> org.apache.flink.shaded.zookeeper3.org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1060)
> [flink-shaded-zookeeper-3.4.14.jar:3.4.14-11.0]}}
> {quote}
> After few attempts connecting to Zookeeper, it finally fails:
> {quote}2020-07-27 08:59:35,055 ERROR
> org.apache.flink.runtime.entrypoint.ClusterEntrypoint [] - Fatal error
> occurred in the cluster entrypoint.
> org.apache.flink.util.FlinkException: Unhandled error in
> ZooKeeperLeaderElectionService: Ensure path threw exception
> at
> org.apache.flink.runtime.leaderelection.ZooKeeperLeaderElectionService.unhandledError(ZooKeeperLeaderElectionService.java:430)
> ~[flink-dist_2.12-1.11.1.jar:1.11.1]
> {quote}
>
> The same HA configuration works fine for me in Flink 1.10.0.
>
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