MongoDB Sink - Exception UnmodifiableIterator

Hi,

I’ve download the Mongo Sink (for Kafka version 1.0) from here: https://lenses.stream/connectors/sink/mongo.html

I’ve extracted the JAR out and created a docker image with the base FROM confluentinc/cp-kafka-connect:4.0.0 with the single jar from the MongoSink in the folder: /usr/share/java/.

In my docker-compose I then set the plugin path (as per Confluent documentation) using: CONNECT_PLUGIN_PATH: /usr/share/java/

However I keep getting the error:

[2018-04-25 03:33:54,806] INFO Loading plugin from: /usr/share/java/kafka-connect-mongodb-1.0.0-1.0.0-all.jar (org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader)
[2018-04-25 03:34:19,526] INFO Reflections took 24380 ms to scan 1 urls, producing 6252 keys and 49763 values  (org.reflections.Reflections)
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:258)
	at org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader.scanUrlsAndAddPlugins(DelegatingClassLoader.java:201)
	at org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader.registerPlugin(DelegatingClassLoader.java:193)
	at org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader.initLoaders(DelegatingClassLoader.java:153)
	at org.apache.kafka.connect.runtime.isolation.Plugins.<init>(Plugins.java:47)
	at org.apache.kafka.connect.cli.ConnectDistributed.main(ConnectDistributed.java:70)

Any ideas what is wrong?

Are there other dependencies/JARs i need to have?

Thanks.

[psmod2]

@Antwnis - Also FYI - I’m placing the JARs within a docker image with the following as the base:

FROM confluentinc/cp-kafka-connect:4.0.0

And within its etc/kafka-connect/jars/ folder I noticed guava-18.0.jar. Is this the issue - should it be version 20? If so I presume my only option is to use a more recent version of the docker image FROM confluentinc/cp-kafka-connect:4.0.0 ?

[andrewstevenson]

closing due to inactivity