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Can not find connector class

See original GitHub issue

When upgrading to cp-connect-base 4.0.0, I met an error happened before, which is ‘Can not find connector class’. However the error message shown my connector was in the available connector list

Failed to find any class that implements Connector and which name matches org.apache.kafka.connect.mongo.MongoSourceConnector, available connectors are: PluginDesc{klass=class org.apache.kafka.connect.file.FileStreamSinkConnector, name='org.apache.kafka.connect.file.FileStreamSinkConnector', version='1.0.0-cp1', encodedVersion=1.0.0-cp1, type=sink, typeName='sink', location='file:/usr/share/java/kafka/'}, PluginDesc{klass=class org.apache.kafka.connect.file.FileStreamSourceConnector, name='org.apache.kafka.connect.file.FileStreamSourceConnector', version='1.0.0-cp1', encodedVersion=1.0.0-cp1, type=source, typeName='source', location='file:/usr/share/java/kafka/'}, PluginDesc{klass=class org.apache.kafka.connect.mongo.MongoSinkConnector, name='org.apache.kafka.connect.mongo.MongoSinkConnector', version='1.0.0-cp1', encodedVersion=1.0.0-cp1, type=sink, typeName='sink', location='file:/usr/share/java/kafka-connect-mongo/'}, PluginDesc{klass=class org.apache.kafka.connect.mongo.MongoSourceConnector, name='org.apache.kafka.connect.mongo.MongoSourceConnector', version='1.0.0-cp1', encodedVersion=1.0.0-cp1, type=source, typeName='source', location='file:/usr/share/java/kafka-connect-mongo/'}, PluginDesc{klass=class org.apache.kafka.connect.tools.MockConnector, name='org.apache.kafka.connect.tools.MockConnector', version='1.0.0-cp1', encodedVersion=1.0.0-cp1, type=connector, typeName='connector', location='file:/usr/share/java/kafka/'}, PluginDesc{klass=class org.apache.kafka.connect.tools.MockSinkConnector, name='org.apache.kafka.connect.tools.MockSinkConnector', version='1.0.0-cp1', encodedVersion=1.0.0-cp1, type=sink, typeName='sink', location='file:/usr/share/java/kafka/'}, PluginDesc{klass=class org.apache.kafka.connect.tools.MockSourceConnector, name='org.apache.kafka.connect.tools.MockSourceConnector', version='1.0.0-cp1', encodedVersion=1.0.0-cp1, type=source, typeName='source', location='file:/usr/share/java/kafka/'}, PluginDesc{klass=class org.apache.kafka.connect.tools.SchemaSourceConnector, name='org.apache.kafka.connect.tools.SchemaSourceConnector', version='1.0.0-cp1', encodedVersion=1.0.0-cp1, type=source, typeName='source', location='file:/usr/share/java/kafka/'}, PluginDesc{klass=class org.apache.kafka.connect.tools.VerifiableSinkConnector, name='org.apache.kafka.connect.tools.VerifiableSinkConnector', version='1.0.0-cp1', encodedVersion=1.0.0-cp1, type=source, typeName='source', location='file:/usr/share/java/kafka/'}, PluginDesc{klass=class org.apache.kafka.connect.tools.VerifiableSourceConnector, name='org.apache.kafka.connect.tools.VerifiableSourceConnector', version='1.0.0-cp1', encodedVersion=1.0.0-cp1, type=source, typeName='source', location='file:/usr/share/java/kafka/'}

Can anyone give an explain?

Issue Analytics

State:
Created 6 years ago
Comments:7

Top GitHub Comments

9reactions

woodleecommented, Dec 8, 2017

FWIW I hit the same issue on 4.0.0, and resolved it by only setting the env variable CONNECT_PLUGIN_PATH to /usr/share/java/ (as described by @SunYour). The alias wasn’t needed in my case, which was using the S3 sink plugin.

1reaction

sailxjxcommented, Dec 1, 2017

@SunYour you can discard the plugin.path option in 3.2.0 if you put your connector in path ‘/usr/share/java’. But you must explicit define the plugin.path in 4.0.0.