Jaikiran Pai created ZOOKEEPER-3779:
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Summary: Zookeeper client 3.4.x fails to connect when using Java 14
Key: ZOOKEEPER-3779
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3779
Project: ZooKeeper
Issue Type: Bug
Affects Versions: 3.4.14
Environment: Java 14
Reporter: Jaikiran Pai
When running on Java 14, the 3.4.x version of `org.apache.zookeeper.Zookeeper`
which creates a client to connect to a Zookeeper server, fails to connect
against the server.
This appears to be due to the use of `InetSocketAddress.toString()` to parse
the host name of an unresolved address in StaticHostProvider[1]. The issue
doesn't show up in 3.5.x versions of Zookeeper. But given that 3.4.x isn't that
old, I thought I'll raise this here and see if it can be fixed and whether a
new 3.4.x release is warranted.
Furthermore, there was a discussion here[2] which explains the whole details.
There's even a discussion in the openjdk net-dev mailing list[3] to see if
there are other similar usages in Zookeeper which might be impacted by this
change in the JDK 14. I don't have any real experience with this library, so if
someone more knowledgable knows whether or not there are other similar usages
in this project, please do reply to the net-dev discussion on the openjdk
mailing list.
[1]
[https://github.com/apache/zookeeper/blob/branch-3.4.14/zookeeper-server/src/main/java/org/apache/zookeeper/client/StaticHostProvider.java#L135]
[2] [https://github.com/quarkusio/quarkus/issues/8212#issuecomment-605403656]
[3] https://mail.openjdk.java.net/pipermail/net-dev/2020-March/013725.html
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