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https://issues.apache.org/jira/browse/FLINK-6805?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16120885#comment-16120885
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Michael Fong edited comment on FLINK-6805 at 8/11/17 10:02 AM:
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Thanks for your comment, [~Zentol],
One question above all, since Flink shaded netty would rename the classes FQN
to specified class path, and would thus stick with the netty implementation to
4.0.27 as required for Flink. Would there be any need to consolidate netty
version across all other libraries; in this cases, flink-connector-cassandra
depends on cassandra-driver-core uses netty 4.0.33
For the example you mentioned for guava, do you refer to FLINK-6982, which
plans to shade guava as it was done for netty? Thanks.
Regards,
Michael Fong
was (Author: mcfongtw):
Thanks for your comment, [~Zentol],
One question above all, since Flink shaded netty would rename the classes FQN
to specified class path, and would thus stick with the netty implementation to
4.0.27 as required for Flink. Would there be any need to consolidate all other
netty version used in other libraries, in this cases, cassandra-driver-core
uses netty 4.0.33
Could you please share the example you mentioned for guava, and how would that
prevent from potential conflict in future upgrade. Thanks.
Regards,
Michael Fong
> Flink Cassandra connector dependency on Netty disagrees with Flink
> ------------------------------------------------------------------
>
> Key: FLINK-6805
> URL: https://issues.apache.org/jira/browse/FLINK-6805
> Project: Flink
> Issue Type: Bug
> Components: Cassandra Connector
> Affects Versions: 1.3.0, 1.2.1
> Reporter: Shannon Carey
> Fix For: 1.4.0
>
>
> The Flink Cassandra connector has a dependency on Netty libraries (via
> promotion of transitive dependencies by the Maven shade plugin) at version
> 4.0.33.Final, which disagrees with the version included in Flink of
> 4.0.27.Final which is included & managed by the parent POM via dependency on
> netty-all.
> Due to use of netty-all, the dependency management doesn't take effect on the
> individual libraries such as netty-handler, netty-codec, etc.
> I suggest that dependency management of Netty should be added for all Netty
> libraries individually (netty-handler, etc.) so that all Flink modules use
> the same version, and similarly I suggest that exclusions be added to the
> quickstart example POM for the individual Netty libraries so that fat JARs
> don't include conflicting versions of Netty.
> It seems like this problem started when FLINK-6084 was implemented:
> transitive dependencies of the flink-connector-cassandra were previously
> omitted, and now that they are included we must make sure that they agree
> with the Flink distribution.
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