kafka connector 등록 후 조회 시 에러
미해결
Spring Cloud로 개발하는 마이크로서비스 애플리케이션(MSA)
강의에서 알려주신대로 my-source-connect라는 connector를 등록한 후 http://localhost:8083/connectors 로 GET 조회시 아래와 같이 connector가 잘 뜨는 것을 확인하고 http://localhost:8083/connectors/my-source-connect/status 로 GET 조회시 아래와 같은 오류 메시지가 응답됐습니다. { "name": "my-source-connect", "connector": { "state": "FAILED", "worker_id": "127.0.0.1:8083", "trace": "java.lang.NoSuchMethodError: 'boolean org.apache.kafka.common.utils.Utils.isBlank(java.lang.String)'\n\tat io.confluent.connect.jdbc.util.StringUtils.isNotBlank(StringUtils.java:79)\n\tat io.confluent.connect.jdbc.dialect.GenericDatabaseDialect.getJdbcCredentialsProvider(GenericDatabaseDialect.java:2010)\n\tat io.confluent.connect.jdbc.dialect.GenericDatabaseDialect.<init>(GenericDatabaseDialect.java:192)\n\tat io.confluent.connect.jdbc.dialect.MySqlDatabaseDialect.<init>(MySqlDatabaseDialect.java:67)\n\tat io.confluent.connect.jdbc.dialect.MySqlDatabaseDialect$Provider.create(MySqlDatabaseDialect.java:57)\n\tat io.confluent.connect.jdbc.dialect.DatabaseDialects.findBestFor(DatabaseDialects.java:134)\n\tat io.confluent.connect.jdbc.JdbcSourceConnector.start(JdbcSourceConnector.java:87)\n\tat org.apache.kafka.connect.runtime.WorkerConnector.doStart(WorkerConnector.java:185)\n\tat org.apache.kafka.connect.runtime.WorkerConnector.start(WorkerConnector.java:210)\n\tat org.apache.kafka.connect.runtime.WorkerConnector.doTransitionTo(WorkerConnector.java:349)\n\tat org.apache.kafka.connect.runtime.WorkerConnector.doTransitionTo(WorkerConnector.java:332)\n\tat org.apache.kafka.connect.runtime.WorkerConnector.doRun(WorkerConnector.java:140)\n\tat org.apache.kafka.connect.runtime.WorkerConnector.run(WorkerConnector.java:117)\n\tat java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)\n\tat java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)\n\tat java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)\n\tat java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)\n\tat java.base/java.lang.Thread.run(Thread.java:840)\n" }, "tasks": [], "type": "source" } kafka connect 터미널 로그에는 다음과 같이 찍혀있었습니다. [2024-10-13 23:15:36,747] ERROR WorkerConnector{id=my-source-connect} Error while starting connector (org.apache.kafka.connect.runtime.WorkerConnector:193) java.lang.NoSuchMethodError: 'boolean org.apache.kafka.common.utils.Utils.isBlank(java.lang.String)' at io.confluent.connect.jdbc.util.StringUtils.isNotBlank(StringUtils.java:79) at io.confluent.connect.jdbc.dialect.GenericDatabaseDialect.getJdbcCredentialsProvider(GenericDatabaseDialect.java:2010) at io.confluent.connect.jdbc.dialect.GenericDatabaseDialect.<init>(GenericDatabaseDialect.java:192) at io.confluent.connect.jdbc.dialect.MySqlDatabaseDialect.<init>(MySqlDatabaseDialect.java:67) at io.confluent.connect.jdbc.dialect.MySqlDatabaseDialect$Provider.create(MySqlDatabaseDialect.java:57) at io.confluent.connect.jdbc.dialect.DatabaseDialects.findBestFor(DatabaseDialects.java:134) at io.confluent.connect.jdbc.JdbcSourceConnector.start(JdbcSourceConnector.java:87) 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.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) at java.base/java.lang.Thread.run(Thread.java:840) [2024-10-13 23:15:36,747] ERROR [Worker clientId=connect-1, groupId=connect-cluster] Failed to start connector 'my-source-connect' (org.apache.kafka.connect.runtime.distributed.DistributedHerder:1339) org.apache.kafka.connect.errors.ConnectException: Failed to start connector: my-source-connect at org.apache.kafka.connect.runtime.distributed.DistributedHerder.lambda$startConnector$5(DistributedHerder.java:1305) at org.apache.kafka.connect.runtime.WorkerConnector.doTransitionTo(WorkerConnector.java:335) at org.apache.kafka.connect.runtime.WorkerConnector.doRun(WorkerConnector.java:140) at org.apache.kafka.connect.runtime.WorkerConnector.run(WorkerConnector.java:117) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) at java.base/java.lang.Thread.run(Thread.java:840) 다음은 제가 시도해본 해결방법 3가지 입니다. 테이블 이름 수정 https://www.inflearn.com/community/questions/618181/source-connector-%EC%98%A4%EB%A5%98?srsltid=AfmBOooaiA_jLl3ijo0mPjPhnhjM4FQeCSDVdXjgXAAHMsN7sojnFkIR users 테이블은 예약어라고 해서 user1으로 수정해서 POST 요청을 보냈을 때는 아래와 같이 응답이 잘 왔습니다. mariadb-java-client.jar 파일 올바른 폴더에 넣기 https://www.inflearn.com/community/questions/970970/kafka-connectors-%EC%97%90%EB%9F%AC?srsltid=AfmBOoopKwFbCFMIgaLAKg5-4urO7Fzzxwl2ChzmqH8evzNEc4H1ECsD 다음 글을 참고해서 mariadb-java-client.jar 파일을 아래와 같이 kafka 폴더에 옮겨 놓았습니다 플러그인 확인 https://www.inflearn.com/community/questions/245034/localhost-8083-connectors-%ED%98%B8%EC%B6%9C%EC%8B%9C-%EC%97%90%EB%9F%AC%EA%B0%80-%EB%B0%9C%EC%83%9D%ED%95%A9%EB%8B%88%EB%8B%A4?srsltid=AfmBOophiRaXpfFVHkArBbyirgaPdUfbGUP2W8o5Px-k_ZZDJ2b7wgmf 다음 글을 참고해서 http://localhost:8083/connector-plugins [ { "class": "io.confluent.connect.jdbc.JdbcSinkConnector", "type": "sink", "version": "10.8.0" }, { "class": "io.confluent.connect.jdbc.JdbcSourceConnector", "type": "source", "version": "10.8.0" }, { "class": "org.apache.kafka.connect.file.FileStreamSinkConnector", "type": "sink", "version": "6.1.0-ccs" }, { "class": "org.apache.kafka.connect.file.FileStreamSourceConnector", "type": "source", "version": "6.1.0-ccs" }, { "class": "org.apache.kafka.connect.mirror.MirrorCheckpointConnector", "type": "source", "version": "1" }, { "class": "org.apache.kafka.connect.mirror.MirrorHeartbeatConnector", "type": "source", "version": "1" }, { "class": "org.apache.kafka.connect.mirror.MirrorSourceConnector", "type": "source", "version": "1" } ] 다음과 같이 응답이 왔습니다. jdbc connector는 잘 등록된 것 같습니다.. 뭐가 문제일까요?
- spring-boot
- jpa
- 아키텍처
- spring-cloud
- kafka
- msa
- rabbitmq