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https://issues.apache.org/jira/browse/FLINK-13417?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16922289#comment-16922289
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Till Rohrmann commented on FLINK-13417:
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Ok, so you are saying that the upgrade from ZooKeeper 3.4 to 3.5 won't cause
any incompatibilities. Only if we start using ZooKeeper 3.5 features such as
the {{CreateMode.CONTAINER}} our users would need to upgrade to ZooKeeper 3.5
as well. Is this correct?
> Bump Zookeeper to 3.5.5
> -----------------------
>
> Key: FLINK-13417
> URL: https://issues.apache.org/jira/browse/FLINK-13417
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / Coordination
> Affects Versions: 1.9.0
> Reporter: Konstantin Knauf
> Priority: Blocker
> Fix For: 1.10.0
>
>
> User might want to secure their Zookeeper connection via SSL.
> This requires a Zookeeper version >= 3.5.1. We might as well try to bump it
> to 3.5.5, which is the latest version.
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