Two versions of Netty listed as dependencies -- deployment errors

[TheGeekPharaoh]

When using Maven to manage dependencies for Kundera with Cassandra as a datastore, it appears to be pulling down two separate versions of the Netty library. These, consequently, end up imported into an EAR and cause deployment errors on JBoss EAP 6.1. Here's what I see during the Maven build:

...
[INFO] Copying artifact[jar:com.github.stephenc:jamm:0.2.5] to[lib/jamm-0.2.5.jar]
[INFO] Copying artifact[jar:io.netty:netty:3.5.9.Final] to[lib/netty-3.5.9.Final.jar]
[INFO] Copying artifact[jar:org.apache.cassandra:cassandra-clientutil:1.2.4] to[lib/cassandra-clientutil-1.2.4.jar]
[INFO] Copying artifact[jar:org.jboss.netty:netty:3.2.8.Final] to[lib/netty-3.2.8.Final.jar]
[INFO] Copying artifact[jar:org.slf4j:slf4j-api:1.7.2] to[lib/slf4j-api-1.7.2.jar]
...

And the subsequent error during deployment:

Caused by: org.jboss.msc.service.DuplicateServiceException: Service jboss.pojo."org.jboss.netty.internal.LoggerConfigurator".DESCRIBED is already registered

[kkmishra]

Hi,
Do one thing, exclude netty jar from kundera-cassandra, and then try, let
me know if it works for you.

    <dependency>
        <groupId>com.impetus.client</groupId>
        <artifactId>kundera-cassandra</artifactId>
        <version>${kundera.version}</version>
                    <exclusions>
            <exclusion>
                <groupId>io.netty</groupId>
                <artifactId>netty</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

you can refer following pom.xml for dependency exclusion:

https://github.com/impetus-opensource/Kundera/blob/kundera-structure/container/jboss/data-keeper/pom.xml

Thanks
KK

On Sun, Sep 22, 2013 at 1:54 AM, sdnakhla notifications@github.com wrote:

When using Maven to manage dependencies for Kundera with Cassandra as a
datastore, it appears to be pulling down two separate versions of the Netty
library. These, consequently, end up imported into an EAR and cause
deployment errors on JBoss EAP 6.1. Here's what I see during the Maven
build:

...
[INFO] Copying artifact[jar:com.github.stephenc:jamm:0.2.5]
to[lib/jamm-0.2.5.jar]
[INFO] Copying artifact[jar:io.netty:netty:3.5.9.Final]
to[lib/netty-3.5.9.Final.jar]
[INFO] Copying
artifact[jar:org.apache.cassandra:cassandra-clientutil:1.2.4]
to[lib/cassandra-clientutil-1.2.4.jar]
[INFO] Copying artifact[jar:org.jboss.netty:netty:3.2.8.Final]
to[lib/netty-3.2.8.Final.jar]
[INFO] Copying artifact[jar:org.slf4j:slf4j-api:1.7.2]
to[lib/slf4j-api-1.7.2.jar]
...

And the subsequent error during deployment:

Caused by: org.jboss.msc.service.DuplicateServiceException: Service
jboss.pojo."org.jboss.netty.internal.LoggerConfigurator".DESCRIBED is
already registered

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/404
.

Thanks and Regards
Kuldeep Kumar Mishra
+919540965199

[TheGeekPharaoh]

Yes, if I manually exclude the Netty libraries it deploys fine. However, this is a less-than-ideal situation.

[mevivs]

No need to manually exclude jars,
As @kkmishra mentioned, If you exclude

<dependency>
            <groupId>com.impetus.client</groupId>
            <artifactId>kundera-cassandra</artifactId>
            <version>${kundera.version}</version>
                        <exclusions>
                <exclusion>
                    <groupId>io.netty</groupId>
                    <artifactId>netty</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

from pom.xml. It should work for you.

-Vivek

[pires]

I agree with @sdnakhla. Working with exclusions is not the ideal solution! When using a library, I expect it to hide details such as circular or repeated dependencies.

In this particular case, who's importing different versions of Netty.IO? Different Kundera modules or some dependencies of Kundera modules?

[mevivs]

This version of netty is bought in by apache Cassandra jar. I assume it might be used for running daemon threads?

[pires]

The thing is with JBoss that already includes Netty.IO, right @sdnakhla? If it is, then kundera-cassandra should stay as is.