Michas Szacillo created FLINK-37464:
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Summary: Update ZK to v3.9.3 in Flink Kubernetes Operator for TLS
v1.3 support
Key: FLINK-37464
URL: https://issues.apache.org/jira/browse/FLINK-37464
Project: Flink
Issue Type: Improvement
Components: Kubernetes Operator
Affects Versions: 1.11.0
Reporter: Michas Szacillo
Flink Kubernetes Operator currently runs with ZooKeeper (3.7.2 or 3.8.4)
contributed via flink-shaded:
[https://github.com/apache/flink-shaded/blob/master/flink-shaded-zookeeper-parent/flink-shaded-zookeeper-38/pom.xml#L36]
As of v3.9.2, ZooKeeper supports TLS v1.3 by default on JDK versions that
support it:
* https://issues.apache.org/jira/browse/ZOOKEEPER-4415
* [https://github.com/apache/zookeeper/pull/1919]
TLS v1.3 provides tangible benefits, faster handshakes, improved security
(removing vulnerable cipher suites), and better overall performance (fewer
round trips).
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