Conflict between gatling and cassandra

[Pablo perez]

I´m start using gatling with this maven dependency

        <dependency>

            <groupId>io.gatling.highcharts</groupId>

            <artifactId>gatling-charts-highcharts</artifactId>

            <version>2.2.5</version>

            <scope>test</scope>

        </dependency>

But I´m having then problems with my Cassandra component that use this dependency

        <dependency>

<groupId>com.datastax.cassandra</groupId>

<artifactId>cassandra-driver-core</artifactId>

<version>${cassandra.driver.core.version}</version>

<exclusions>

<exclusion>

<artifactId>slf4j-api</artifactId>

<groupId>org.slf4j</groupId>

</exclusion>

</exclusions>

</dependency>

When I see the logs I can see this exception

    INFO  2017-04-25T14:31:43,119 []                                       [com.datastax.driver.core.GuavaCompatibility] Detected Guava < 19 in the classpath, using legacy compatibility layer

    INFO  2017-04-25T14:31:44,000 []                                       [com.datastax.driver.core.Native] Could not load JNR C Library, native system calls through this library will not be available (set this logger level to DEBUG to see the full stack trace).

    INFO  2017-04-25T14:31:44,000 []                                       [com.datastax.driver.core.ClockFactory] Using java.lang.System clock to generate timestamps.

    WARN  2017-04-25T14:31:44,789 []                                       [com.datastax.driver.core.NettyUtil] Found Netty's native epoll transport, but not running on linux-based operating system. Using NIO instead.

    WARN  2017-04-25T14:31:46,457 []                                       [io.netty.util.concurrent.DefaultPromise] An exception was thrown by com.datastax.driver.core.Connection$1.operationComplete()

    java.lang.NullPointerException

    at io.netty.channel.group.DefaultChannelGroup.add(DefaultChannelGroup.java:146) ~[netty-transport-4.1.5.Final.jar:4.1.5.Final]

    at io.netty.channel.group.DefaultChannelGroup.add(DefaultChannelGroup.java:42) ~[netty-transport-4.1.5.Final.jar:4.1.5.Final]

    at com.datastax.driver.core.Connection$1.operationComplete(Connection.java:161) ~[cassandra-driver-core-3.2.0.jar:?]

    at com.datastax.driver.core.Connection$1.operationComplete(Connection.java:148) ~[cassandra-driver-core-3.2.0.jar:?]

    at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:514) [netty-common-4.1.5.Final.jar:4.1.5.Final]

    at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:488) [netty-common-4.1.5.Final.jar:4.1.5.Final]

    at io.netty.util.concurrent.DefaultPromise.access$000(DefaultPromise.java:34) [netty-common-4.1.5.Final.jar:4.1.5.Final]

    at io.netty.util.concurrent.DefaultPromise$1.run(DefaultPromise.java:438) [netty-common-4.1.5.Final.jar:4.1.5.Final]

    at io.netty.util.concurrent.GlobalEventExecutor$TaskRunner.run(GlobalEventExecutor.java:233) [netty-common-4.1.5.Final.jar:4.1.5.Final]

    at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144) [netty-common-4.1.5.Final.jar:4.1.5.Final]

Any idea how to fix this conflict?

Regards.