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https://issues.apache.org/jira/browse/STORM-355?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14117818#comment-14117818
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ASF GitHub Bot commented on STORM-355:
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Github user danielcompton commented on the pull request:
https://github.com/apache/incubator-storm/pull/148#issuecomment-54101048
Has anyone examined whether there were any breaking changes in Netty
between the version that Zookeeper was using and the version Storm was using?
We came across this issue but weren't 100% sure it was safe to just exclude
org.jboss.netty.
> Duplicated netty dependency in lib classpath
> --------------------------------------------
>
> Key: STORM-355
> URL: https://issues.apache.org/jira/browse/STORM-355
> Project: Apache Storm (Incubating)
> Issue Type: Bug
> Affects Versions: 0.9.2-incubating
> Reporter: Krystian Nowak
> Assignee: Krystian Nowak
> Fix For: 0.9.3-incubating
>
> Attachments: incubator-storm-STORM-355-pom.xml.patch
>
>
> Both _netty_ dependencies - [_3.2.2.Final_ (from
> _org.jboss.netty_)|http://search.maven.org/#artifactdetails|org.jboss.netty|netty|3.2.2.Final|bundle]
> and [_3.6.3.Final_ (from
> _io.netty_)|http://search.maven.org/#artifactdetails|io.netty|netty|3.6.3.Final|bundle]
> - are found in _lib_ folder:
> {noformat}
> knowak@knowak-dell:~/incubator-storm-0.9.2-incubating/storm-dist/binary/target/apache-storm-0.9.2-incubating/lib$
> ls -al | grep netty
> -rw-rw-r-- 1 knowak knowak 785556 Jun 17 12:38 netty-3.2.2.Final.jar
> -rw-rw-r-- 1 knowak knowak 1202373 Jan 27 11:14 netty-3.6.3.Final.jar
> {noformat}
> as both of them are configured in _pom.xml_:
> {noformat}
> knowak@knowak-dell:~/incubator-storm-0.9.2-incubating/storm-core$ mvn
> dependency:list | grep netty
> [INFO] io.netty:netty:jar:3.6.3.Final:compile
> [INFO] org.jboss.netty:netty:jar:3.2.2.Final:compile
> {noformat}
> and it seems that the older one is transitively brought by [_zookeeper_
> dependency|http://search.maven.org/remotecontent?filepath=org/apache/zookeeper/zookeeper/3.4.5/zookeeper-3.4.5.pom]:
> {noformat}
> knowak@knowak-dell:~/incubator-storm-0.9.2-incubating/storm-core$ mvn
> dependency:tree
> ...
> [INFO] +- org.apache.curator:curator-framework:jar:2.4.0:compile
> [INFO] | +- org.apache.curator:curator-client:jar:2.4.0:compile
> [INFO] | \- org.apache.zookeeper:zookeeper:jar:3.4.5:compile
> [INFO] | +- jline:jline:jar:2.11:compile
> [INFO] | \- org.jboss.netty:netty:jar:3.2.2.Final:compile
> ...
> [INFO] +- io.netty:netty:jar:3.6.3.Final:compile
> ...
> {noformat}
> so possibly [_curator-framework_ dependency
> section|https://github.com/apache/incubator-storm/blob/master/pom.xml#L349]
> needs adding an exclusion of _org.jboss.netty_:_netty_
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