Different Google guava versions

I want to use your kafka cassandra connector with docker confluentinc/cp-kafka-connect:3.3.0 image. When i run this image without your connector, its started successfully. If i add it to classpath kafka-connect-cassandra-0.3.0-3.3.0-all.jar it throws error.

Exception in thread "main" java.lang.NoSuchMethodError: com.google.common.collect.Sets$SetView.iterator()Lcom/google/common/collect/UnmodifiableIterator;
	at org.reflections.Reflections.expandSuperTypes(Reflections.java:380)
	at org.reflections.Reflections.<init>(Reflections.java:126)
	at org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader.scanPluginPath(DelegatingClassLoader.java:221)
	at org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader.scanUrlsAndAddPlugins(DelegatingClassLoader.java:198)
        at org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader.initLoaders(DelegatingClassLoader.java:159)
	at org.apache.kafka.connect.runtime.isolation.Plugins.<init>(Plugins.java:47)
	at org.apache.kafka.connect.cli.ConnectDistributed.main(ConnectDistributed.java:63)

I completely deleted guava from this jar, repack it and provide to kafka connect. Than it starts ok, but if i start you tasks it fails with error:

java.lang.NoSuchMethodError: com.google.common.util.concurrent.Futures.transform(Lcom/google/common/util/concurrent/ListenableFuture;Lcom/google/common/util/concurrent/AsyncFunction;Ljava/util/concurrent/Executor;)Lcom/google/common/util/concurrent/ListenableFuture;
	at com.datastax.driver.core.Connection.initAsync(Connection.java:173)
	at com.datastax.driver.core.Connection$Factory.open(Connection.java:731)
	at com.datastax.driver.core.ControlConnection.tryConnect(ControlConnection.java:251)
	at com.datastax.driver.core.ControlConnection.reconnectInternal(ControlConnection.java:199)
	at com.datastax.driver.core.ControlConnection.connect(ControlConnection.java:77)
	at com.datastax.driver.core.Cluster$Manager.init(Cluster.java:1414)
	at com.datastax.driver.core.Cluster.init(Cluster.java:162)
	at com.datastax.driver.core.Cluster.connectAsync(Cluster.java:333)
	at com.datastax.driver.core.Cluster.connect(Cluster.java:283)
	at com.datamountaineer.streamreactor.connect.cassandra.CassandraConnection$.getSession(CassandraConnection.scala:65)
	at com.datamountaineer.streamreactor.connect.cassandra.CassandraConnection$.apply(CassandraConnection.scala:35)
	at com.datamountaineer.streamreactor.connect.cassandra.sink.CassandraWriter$$anonfun$1.apply(CassandraWriter.scala:32)
	at com.datamountaineer.streamreactor.connect.cassandra.sink.CassandraWriter$$anonfun$1.apply(CassandraWriter.scala:32)
	at scala.util.Try$.apply(Try.scala:192)
	at com.datamountaineer.streamreactor.connect.cassandra.sink.CassandraWriter$.apply(CassandraWriter.scala:32)
	at com.datamountaineer.streamreactor.connect.cassandra.sink.CassandraSinkTask.start(CassandraSinkTask.scala:58)
	at org.apache.kafka.connect.runtime.WorkerSinkTask.initializeAndStart(WorkerSinkTask.java:232)
	at org.apache.kafka.connect.runtime.WorkerSinkTask.execute(WorkerSinkTask.java:145)
	at org.apache.kafka.connect.runtime.WorkerTask.doRun(WorkerTask.java:146)
	at org.apache.kafka.connect.runtime.WorkerTask.run(WorkerTask.java:190)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)```

[hleb-albau]

@andrewstevenson I want to say big thanks for your fast answers, you save a lot of my time.

Finally, i managed it. I found at kafka connector docs that, we should use plugin.path property. So, I just added to my compose file and it started!

    environment:
       CONNECT_PLUGIN_PATH: /etc/kafka-connect/custom-plugins
    volumes:
      - ../connectors/ethereum/build/libs/connect/:/etc/kafka-connect/custom-plugins

[Antwnis]

Thanks i’ve filled in #263 in order to rename connector into appropriate template This will be done in the next release, as we are in the process of releasing the entire collection for Kafka 0.10.2 and Kafka 0.11 right now 😃