Hi folks,
I try to start the kafka connect in the distribute ways as follows. It has 
below error. Standalone mode is fine. It happens on the 3.0.1. and 3.1 version 
of confluent kafka. Des anyone know the cause of this error?
Thanks,
Will

        security.protocol = PLAINTEXT
        internal.key.converter = class 
org.apache.kafka.connect.json.JsonConverter
        access.control.allow.methods =
        ssl.keymanager.algorithm = SunX509
        metrics.sample.window.ms = 30000
 (org.apache.kafka.connect.runtime.distributed.DistributedConfig:178)
[2016-12-05 21:24:14,457] INFO Logging initialized @991ms 
(org.eclipse.jetty.util.log:186)
Exception in thread "main" org.apache.kafka.common.KafkaException: Failed to 
construct kafka consumer
        at 
org.apache.kafka.connect.runtime.distributed.WorkerGroupMember.<init>(WorkerGroupMember.java:125)
        at 
org.apache.kafka.connect.runtime.distributed.DistributedHerder.<init>(DistributedHerder.java:148)
        at 
org.apache.kafka.connect.runtime.distributed.DistributedHerder.<init>(DistributedHerder.java:130)
        at 
org.apache.kafka.connect.cli.ConnectDistributed.main(ConnectDistributed.java:84)
Caused by: java.lang.NoSuchMethodError: 
org.apache.kafka.clients.consumer.internals.AbstractCoordinator.<init>(Lorg/apache/kafka/clients/consumer/internals/ConsumerNetworkClient;Ljava/lang/String;IIILorg/apache/kafka/common/metrics/Metrics;Ljava/lang/String;Lorg/apache/kafka/common/utils/Time;J)V
        at 
org.apache.kafka.connect.runtime.distributed.WorkerCoordinator.<init>(WorkerCoordinator.java:77)
        at 
org.apache.kafka.connect.runtime.distributed.WorkerGroupMember.<init>(WorkerGroupMember.java:105)
        ... 3 more

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