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https://issues.apache.org/jira/browse/DRILL-4727?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15334658#comment-15334658
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Aditya Kishore commented on DRILL-4727:
---------------------------------------
The problem is that Drill uses {{netty}} in its various bits and pieces
{{(netty-buffer, netty-codec, netty-common, etc...)}} instead of using the uber
netty library, i.e. {{netty-all}}.
So if a class, {{io.netty.channel.ChannelOption}} in this case, is loaded from
one version of one of the bits (netty-transport) while a dependent class
(io.netty.util.UniqueName) from the uber jar, conflicts like this can happen.
The right fix would be to move Drill to use the uber jar so that its version
can override any other components'.
For now, since we are so close to release 1.7 release, I'd like to just exclude
the {{netty-all}} jar from {{hbase-client}}'s list of dependencies.
> Exclude netty from HBase Client's transitive dependencies
> ---------------------------------------------------------
>
> Key: DRILL-4727
> URL: https://issues.apache.org/jira/browse/DRILL-4727
> Project: Apache Drill
> Issue Type: Bug
> Components: Tools, Build & Test
> Affects Versions: 1.7.0
> Reporter: Aditya Kishore
> Assignee: Aditya Kishore
> Priority: Critical
>
> Reported on dev/user list after moving to HBase 1.1
> {noformat}
> Hi Aditya,
> I tested the latest version and got this exception and the drillbit fail to
> startup .
> Exception in thread "main" java.lang.NoSuchMethodError:
> io.netty.util.UniqueName.<init>(Ljava/lang/String;)V
> at io.netty.channel.ChannelOption.<init>(ChannelOption.java:136)
> at io.netty.channel.ChannelOption.valueOf(ChannelOption.java:99)
> at io.netty.channel.ChannelOption.<clinit>(ChannelOption.java:42)
> at org.apache.drill.exec.rpc.BasicServer.<init>(BasicServer.java:63)
> at
> org.apache.drill.exec.rpc.user.UserServer.<init>(UserServer.java:74)
> at
> org.apache.drill.exec.service.ServiceEngine.<init>(ServiceEngine.java:78)
> at org.apache.drill.exec.server.Drillbit.<init>(Drillbit.java:108)
> at org.apache.drill.exec.server.Drillbit.start(Drillbit.java:285)
> at org.apache.drill.exec.server.Drillbit.start(Drillbit.java:271)
> at org.apache.drill.exec.server.Drillbit.main(Drillbit.java:267)
> It will working if I remove jars/3rdparty/netty-all-4.0.23.Final.jar, the
> drill can startup. I think there have some package dependency version issue,
> do you think so ?
> {noformat}
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