kafka ignite sink connector

Question

I am trying to replicate data from Kafka topic to apache ignite cluster. I have added ignite-core.jar along with all other required files in plugins and it's loaded in connector as per the logs. Still I'm facing this error. Any suggestions would be helpful. Thank you.

    INFO Instantiated connector string-ignite-connector with version 6.1.1-ccs of type class org.apache.ignite.stream.kafka.connect.IgniteSinkConnector (org.apache.kafka.connect.runtime.Worker:284)
[2021-05-15 08:52:43,717] INFO Finished creating connector string-ignite-connector (org.apache.kafka.connect.runtime.Worker:310)
[2021-05-15 08:52:43,719] ERROR WorkerConnector{id=string-ignite-connector} Error while starting connector (org.apache.kafka.connect.runtime.WorkerConnector:193)
java.lang.NoClassDefFoundError: org/apache/ignite/internal/util/typedef/internal/A
        at org.apache.ignite.stream.kafka.connect.IgniteSinkConnector.start(IgniteSinkConnector.java:55)
        at org.apache.kafka.connect.runtime.WorkerConnector.doStart(WorkerConnector.java:185)
        at org.apache.kafka.connect.runtime.WorkerConnector.start(WorkerConnector.java:210)
        at org.apache.kafka.connect.runtime.WorkerConnector.doTransitionTo(WorkerConnector.java:349)
        at org.apache.kafka.connect.runtime.WorkerConnector.doTransitionTo(WorkerConnector.java:332)
        at org.apache.kafka.connect.runtime.WorkerConnector.doRun(WorkerConnector.java:140)
        at org.apache.kafka.connect.runtime.WorkerConnector.run(WorkerConnector.java:117)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.ClassNotFoundException: org.apache.ignite.internal.util.typedef.internal.A
        at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
        at org.apache.kafka.connect.runtime.isolation.PluginClassLoader.loadClass(PluginClassLoader.java:104)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
        ... 12 more
[2021-05-15 08:52:43,723] ERROR Failed to create job for myconfig/ignite-connector.properties (org.apache.kafka.connect.cli.ConnectStandalone:110)
[2021-05-15 08:52:43,723] ERROR Stopping after connector error (org.apache.kafka.connect.cli.ConnectStandalone:121)
java.util.concurrent.ExecutionException: org.apache.kafka.connect.errors.ConnectException: Failed to transition connector string-ignite-connector to state STARTED
        at org.apache.kafka.connect.util.ConvertingFutureCallback.result(ConvertingFutureCallback.java:115)
        at org.apache.kafka.connect.util.ConvertingFutureCallback.get(ConvertingFutureCallback.java:99)
        at org.apache.kafka.connect.cli.ConnectStandalone.main(ConnectStandalone.java:118)
Caused by: org.apache.kafka.connect.errors.ConnectException: Failed to transition connector string-ignite-connector to state STARTED
        at org.apache.kafka.connect.runtime.WorkerConnector.doTransitionTo(WorkerConnector.java:335)
        at org.apache.kafka.connect.runtime.WorkerConnector.doRun(WorkerConnector.java:140)
        at org.apache.kafka.connect.runtime.WorkerConnector.run(WorkerConnector.java:117)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NoClassDefFoundError: org/apache/ignite/internal/util/typedef/internal/A
        at org.apache.ignite.stream.kafka.connect.IgniteSinkConnector.start(IgniteSinkConnector.java:55)
        at org.apache.kafka.connect.runtime.WorkerConnector.doStart(WorkerConnector.java:185)
        at org.apache.kafka.connect.runtime.WorkerConnector.start(WorkerConnector.java:210)
        at org.apache.kafka.connect.runtime.WorkerConnector.doTransitionTo(WorkerConnector.java:349)
        at org.apache.kafka.connect.runtime.WorkerConnector.doTransitionTo(WorkerConnector.java:332)
        ... 7 more
Caused by: java.lang.ClassNotFoundException: org.apache.ignite.internal.util.typedef.internal.A
        at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
        at org.apache.kafka.connect.runtime.isolation.PluginClassLoader.loadClass(PluginClassLoader.java:104)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
        ... 12 more

Answer 1

It looks like you have ignite-kafka module in your classpath, but not ignite-core and its dependencies, which is also needed. My understanding ends there.