title: Kafka avro console consumer is not displaying any messages from kafka connect
body: <p>Steps followed<br>
  Installed/extracted confluent 5.0.0.-2.11</p>
  
  <p>Modified kafka-connect-jdbc/source-quickstart.properties to point to my local db </p>
  
  <pre><code>name=test-source-sqlite-jdbc-autoincrement
  connector.class=io.confluent.connect.jdbc.JdbcSourceConnector
  tasks.max=1
  connection.url=jdbc:mysql://127.0.0.1:3306/test?user=root&amp;password=root
  mode=incrementing
  incrementing.column.name=id 
  topic.prefix=sqlite-jdbc
  query=select * from customer
  value.converter=org.apache.kafka.connect.json.JsonConverter
  key.converter=org.apache.kafka.connect.json.JsonConverter
  poll.interval.ms=5000
  table.poll.interval.ms=120000
  mode=bulk
  </code></pre>
  
  <p>Modified below properties in connect-avro-standalone.properties
      plugin.path=extracted folder of confluent</p>
  
  <pre><code>bootstrap.servers=domain:9092
  key.converter=io.confluent.connect.avro.AvroConverter
  key.converter.schemas.enable=true
  value.converter=io.confluent.connect.avro.AvroConverter
  value.converter.schemas.enable=true
  internal.key.converter=org.apache.kafka.connect.json.JsonConverter
  internal.value.converter=org.apache.kafka.connect.json.JsonConverter
  internal.key.converter.schemas.enable=false
  internal.value.converter.schemas.enable=false 
  plugin.path=/home/confluent-5.0.0/
  </code></pre>
  
  <p>After modifying above properties I started zookeeper, kafka, schema registry &amp; kafka connect jdbc and also avro console consumer with below command. Table referred: Customer</p>
  
  <pre><code>sh kafka-avro-console-consumer --bootstrap-server ip:9092 --topic sqlite-jdbc-customer --from-beginning
  </code></pre>
  
  <p>i do not see any messages in the avro console consumer</p>