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From "Chris Nauroth (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (ZOOKEEPER-1681) ZooKeeper 3.4.x can optionally use netty for nio but the pom does not declare the dep as optional
Date Tue, 21 Jun 2016 22:14:58 GMT

     [ https://issues.apache.org/jira/browse/ZOOKEEPER-1681?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Chris Nauroth updated ZOOKEEPER-1681:
-------------------------------------
    Fix Version/s:     (was: 3.5.2)
                   3.5.3

> ZooKeeper 3.4.x can optionally use netty for nio but the pom does not declare the dep
as optional
> -------------------------------------------------------------------------------------------------
>
>                 Key: ZOOKEEPER-1681
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1681
>             Project: ZooKeeper
>          Issue Type: Improvement
>    Affects Versions: 3.4.0, 3.4.1, 3.4.2, 3.4.4, 3.4.5
>            Reporter: John Sirois
>            Assignee: Stevo Slavic
>             Fix For: 3.6.0, 3.5.3
>
>         Attachments: ZOOKEEPER-1681.patch
>
>
> For example in [3.4.5|http://search.maven.org/remotecontent?filepath=org/apache/zookeeper/zookeeper/3.4.5/zookeeper-3.4.5.pom]
we see:
> {code}
> $ curl -sS http://search.maven.org/remotecontent?filepath=org/apache/zookeeper/zookeeper/3.4.5/zookeeper-3.4.5.pom
| grep -B1 -A4 org.jboss.netty
>     <dependency>
>       <groupId>org.jboss.netty</groupId>
>       <artifactId>netty</artifactId>
>       <version>3.2.2.Final</version>
>       <scope>compile</scope>
>     </dependency>
> {code}
> As a consumer I can depend on zookeeper with an exclude for org.jboss.netty#netty or
I can let my transitive dep resolver pick a winner.  This might be fine, except for those
who might be using a more modern netty published under the newish io.netty groupId.  With
this twist you get both org.jboss.netty#netty;foo and io.netty#netty;bar on your classpath
and runtime errors ensue from incompatibilities. unless you add an exclude against zookeeper
(and clearly don't enable the zk netty nio handling.)
> I propose that this is a pom bug although this is debatable.  Clearly as currently packaged
zookeeper needs netty to compile, but I'd argue since it does not need netty to run, either
the scope should be provided or optional or a zookeeper-netty lib should be broken out as
an optional dependency and this new dep published by zookeeper can have a proper compile dependency
on netty.



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