안녕하세요 지금까지 강의 잘 따라오고 있었는데요 spark ssh 접속하여 shell 실행 후 smartcar_master_df 생성까지 잘 되었는데 smartcar_master_df 조회를 하면 아래와 같은 오류가 발생합니다. 구글링해서 찾아봐도 해결이 안되는데 도움 부탁드립니다. >> 오류메세지 >> WARN cluster.YarnScheduler: Initial job has not accepted any resources; check your cluster UI to ensure that workers are registered and have sufficient resources

이거 지워줘야합니다. 안그러면/:blgoId get 요청 할 때, "error": "commentCount is not defined"에러 나옵니다.또,여기 주석처리 풀어줘야합니다.안그러면 다음강의에서, comment Post 할 때"Cannot read properties of undefined (reading 'push')"에러나요.수업에서는 이부분에대한 조작없이 이미 되어있는 상태로 진행되고 나오지 않습니다.다른 분들은 이거 다 알아서 해결하고, 수업진행하신건가;; 에러나서 진행이 안될텐데;; 게시판에 질문들이 없네요. ㅡㅡ;

안녕하세요. 업무를 병행하면서 학습을 하기 쉽지가 않네요... 혹시 연장 신청이 가능할지 궁금해서 문의 남깁니다. 가능하다면 꼭 좀 부탁드리겠습니다. 감사합니다.

안녕하세요.선생님 강의를 듣고 kafka connect 매커니즘에 대해 상세하게 알게 됐습니다.다만, 실무에 적용을 하는 도중 문제에 봉착해 도움을 구하고자 문의드립니다.현재 debezium mysql connector를 사용하여 source 데이터는 topic으로 저장하는데 성공하였지만,해당 데이터를 mongodb 에 저장하는데 저장/업데이트는 정상적으로 되지만 delete 시 반영이 안되는 문제가 있습니다.RDB와는 다르게 mongodb sink connector는 insert.mode는 지원하지 않고write model Strategy 를 활용하는 걸로 보이는데,아래와 같이 sink connector를 설정할 경우 account_id 를 key 로 해서 업데이트는 가능한데, 삭제는 안되네요? "connector.class": "com.mongodb.kafka.connect.MongoSinkConnector", "document.id.strategy":"com.mongodb.kafka.connect.sink.processor.id.strategy.PartialValueStrategy", "document.id.strategy.partial.value.projection.list":"account_id", "document.id.strategy.partial.value.projection.type":"AllowList", "writemodel.strategy":"com.mongodb.kafka.connect.sink.writemodel.strategy.ReplaceOneBusinessKeyStrategy",혹시 Source 에서 입력, 업데이트, 삭제를 mongodb에 반영하려면 어떻게 해야 되는지 알 수 있을까요?감사합니다. 

faker 패키지 이슈가 생겼습니다. npm i faker로 하면 에러가 발생합니다.npm i -D faker@5 이렇게 하면 될 것 같은데 해도 될까요?

해당부분 진행중에,userId 를 넣은 get, post, delete 요청을 할경우, 강의와는 다르게아래와 같이 error 메세지가 뜹니다.뭐가 문제인걸까요? userId가 아닌, /user 로 하는 라우팅은 잘 되고 있습니다.///내용 추가이후 강의에서 같은 문제가 발생하여, mongoose를 불러오는 코드를 추가하시는데요.이부분 앞 강의에서 언급이 되거나 수정이 필요해보입니다.

아래처럼 코드를 실행하였을 때, 결과 그래프가 보이지 않습니다. 구글링을 해보니 plotly.offline.init_notebook_mode(connected=False) 이러한 옵션을 넣으면 해결이 된다는데, 해결이 되지 않습니다. 혹시 다른 방법이 있을까요?

MONGO_URI, 이후 부분들은 작성안해도 에러가 안나는데,굳이해야하나요? 버젼이 업데이트 되면서 작성 안해도 되도록 바뀐걸까요? 또,이 부분에서, 여기를 작업해주지 않아도 name 이나 age 둘중 하나만 put 해도, null 값이 들어가지 않는데요.이 역시 버젼이 올라가서 개선이 된걸까요?만약 그렇다면, 개정된 강의를 만드실 계획이 있으신지도 궁금합니다지금 사용하고 있는 몽구스 는 7.0.1 입니다.

안녕하세요. 선생님Confluent AVRO Install 하고 나서 sink connect 등록하고 상태를 확인 해보니 아래와 같이 에러가 발생 했습니다.ubuntu@ip-172-31-0-29:~$ curl --location --request POST 'http://localhost:8083/connectors' \--header 'Content-Type: application/json' \--data-raw '{"name": "mysql-sink-connector","config": {"connector.class": "io.confluent.connect.jdbc.JdbcSinkConnector","tasks.max": "1","topics": "source_mysqldb.hesdp_mgr.TB_ME_TERMS_BAS","connection.url": "jdbc:mysql://lg-mysql:3306/aurora2","connection.user": "sink","connection.password": "sink1234","table.name.format": "aurora2.TB_ME_TERMS_BAS","insert.mode": "upsert","pk.fields": "TERMS_VER_ID","pk.mode": "record_key","delete.enabled": "true","key.converter": "io.confluent.connect.avro.AvroConverter","value.converter": "io.confluent.connect.avro.AvroConverter","key.converter.schema.registry.url": "http://lg-schema01:8081","value.converter.schema.registry.url": "http://lg-schema01:8081"}}'{"name":"mysql-sink-connector","config":{"connector.class":"io.confluent.connect.jdbc.JdbcSinkConnector","tasks.max":"1","topics":"source_mysqldb.hesdp_mgr.TB_ME_TERMS_BAS","connection.url":"jdbc:mysql://lg-mysql:3306/aurora2","connection.user":"sink","connection.password":"sink1234","table.name.format":"aurora2.TB_ME_TERMS_BAS","insert.mode":"upsert","pk.fields":"TERMS_VER_ID","pk.mode":"record_key","delete.enabled":"true","key.converter":"io.confluent.connect.avro.AvroConverter","value.converter":"io.confluent.connect.avro.AvroConverter","key.converter.schema.registry.url":"http://lg-schema01:8081","value.converter.schema.registry.url":"http://lg-schema01:8081","name":"mysql-sink-connector"},"tasks":[],"type":"sink"} ubuntu@ip-172-31-0-29:~$ curl -X GET http://localhost:8083/connectors/mysql-sink-connector/status | jq '.'% Total % Received % Xferd Average Speed Time Time Time CurrentDload Upload Total Spent Left Speed100 1898 100 1898 0 0 31616 0 --:--:-- --:--:-- --:--:-- 32169{"name": "mysql-sink-connector","connector": {"state": "RUNNING","worker_id": "172.31.13.238:8083"},"tasks": [{"id": 0,"state": "FAILED","worker_id": "172.31.13.238:8083","trace": "java.lang.NoClassDefFoundError: com/google/common/base/Ticker\n\tat io.confluent.kafka.schemaregistry.client.CachedSchemaRegistryClient.<init>(CachedSchemaRegistryClient.java:175)\n\tat io.confluent.kafka.schemaregistry.client.CachedSchemaRegistryClient.<init>(CachedSchemaRegistryClient.java:158)\n\tat io.confluent.kafka.schemaregistry.client.SchemaRegistryClientFactory.newClient(SchemaRegistryClientFactory.java:36)\n\tat io.confluent.connect.avro.AvroConverter.configure(AvroConverter.java:68)\n\tat org.apache.kafka.connect.runtime.isolation.Plugins.newConverter(Plugins.java:297)\n\tat org.apache.kafka.connect.runtime.Worker.startTask(Worker.java:640)\n\tat org.apache.kafka.connect.runtime.Worker.startSinkTask(Worker.java:544)\n\tat org.apache.kafka.connect.runtime.distributed.DistributedHerder.startTask(DistributedHerder.java:1703)\n\tat org.apache.kafka.connect.runtime.distributed.DistributedHerder.lambda$getTaskStartingCallable$31(DistributedHerder.java:1753)\n\tat java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)\n\tat java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)\n\tat java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)\n\tat java.base/java.lang.Thread.run(Thread.java:829)\nCaused by: java.lang.ClassNotFoundException: com.google.common.base.Ticker\n\tat java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:476)\n\tat java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:589)\n\tat org.apache.kafka.connect.runtime.isolation.PluginClassLoader.loadClass(PluginClassLoader.java:103)\n\tat java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)\n\t... 13 more\n"}],"type": "sink"} 참고로 스키마 레지스토리 서버가 잘 붙나 확인 해본 결과 잘 붙습니다.ubuntu@ip-172-31-0-29:~$ curl -v lg-schema01:8081* Trying 172.31.46.33:8081...* Connected to lg-schema01 (172.31.46.33) port 8081 (#0)> GET / HTTP/1.1> Host: lg-schema01:8081> User-Agent: curl/7.81.0> Accept: />* Mark bundle as not supporting multiuse< HTTP/1.1 200 OK< Date: Mon, 13 Mar 2023 06:14:56 GMT< Content-Type: application/vnd.schemaregistry.v1+json< Vary: Accept-Encoding, User-Agent< Content-Length: 2<* Connection #0 to host lg-schema01 left intact{}ubuntu@ip-172-31-0-29:~$ 현재 제가 구성한 환경 정보 입니다.Apache Zookeeper 3.8.1 3개Apache Kafka 2.13-3.3.2 3개=> Source connect : Debezium mysql connect 2.1.2=> Sink connect : Confluent JDBC Connector 10.6.3=> Avro : Confluent Avro converter 7.3Confluent Schema registry 7.3.0 1개mysql DB 1 개 (Source 와 Sink 는 user 로 분리해서 데이터 넣는 방식으로 테스트 중입니다) 구글링 검색 결과 Guava 를 못찾아서 그런거 같다는데, 제가 설치한 환경의 디펜던시가 문제일까요?      

미러메이커2를 사용할 때 각 카프카의 버전이 달라도 사용이 가능한가요? 예를 들어서 하나의 클러스터는 2.2버전이고 하나의 클러스터는 3.1 버전이라고 했을 때2.2버전은 미러메이커2를 지원하지 않는데 3.1 버전의 클러스터에서 미러메이커2를 실행하면 2.2버전에서 3.1버전으로 데이터가 가져와지나요...?

안녕하세요 강사님 좋은 강의 감사합니다. 파티션 할당 전략 중 CooperativesStickyAssignor 전략 실습중에 에러가 발생하였습니다 에러 내용은 두번째 컨슈머를 기동하면서 첫번째 컨슈머 콘솔에서"Request joining group due to: group is already rebalancing" 라는 에러가 발생하면서 리밸런싱이 완료되지 않아 어느 컨슈머에도 파티션이 할당되지 않는 문제가 발생합니다. 해당 에러는  타임아웃이 나기전까지 반복해서 발생하며 이후에는 두 컨슈머 모두 종료됩니다  해결방법좀 부탁드립니다ㅠ.ㅠ

여기 이부분은 ObjectID를 ID 가 아닌 Id 로 해주면 되는 부분이 아닌가요?ObjectId 로 하면 잘 나오는데요. 굳이 ObjectID 로 선언을 해줘야하는가 싶어서 질문드립니다.

안녕하세요. 선생님 수업을 잘 듣고 있습니다.일단 선생님이 알려주신 부분하고 다르게 하고 있는게 있어서 환경 부터 어떻게 했는지 말씀 드릴게요.일단 kafka는 Confluent kafka 가 아닌 apache kafka 로 설치 했습니다.EC2 에서 총 8개의 인스턴스를 구축 했으며Apache Zookeeper 3.8.1 3개Apache Kafka 2.13-3.3.2 3개=> Source connect : Debezium mysql connect 2.1.2=> Sink connect : Confluent JDBC Connector 10.6.3Confluent Schema registry 7.3.0 1개mysql DB 1 개 (Source 와 Sink 는 user 로 분리해서 데이터 넣는 방식으로 테스트 중입니다)위와 같이 구성을 해서 구축을 했습니다.테스트는 json 방식으로 Source 와 sink 쪽에 각각 connect 정보 등록 해서 데이터 전달 되는것까지 통과 했습니다.Confluent Schema registry 는 설치 하고 카프카서버에서 스키마 서버 8081포트 가 뜨는것도 확인 했습니다.Json 방식으로 Schema registry 로 데이터 전달 되는것도 문제 없었습니다. 문제점. 수업에 있는 Avro 로 connect 등록 할려고 하니 바로 에러가 납니다.{"error_code":500,"message":"Error trying to forward REST request: Connector configuration is invalid and contains the following 2 error(s):\nInvalid value io.apicurio.registry.utils.converter.AvroConverter for configuration key.converter: Class io.apicurio.registry.utils.converter.AvroConverter could not be found.\nInvalid value io.apicurio.registry.utils.converter.AvroConverter for configuration value.converter: Class io.apicurio.registry.utils.converter.AvroConverter could not be found.\nYou can also find the above list of errors at the endpoint /connector-plugins/{connectorType}/config/validate"} 위와 같은 에러에 대해 일단 조치한 점은kafka 의 connect-distributed.properties 에서 설정한 "plugin.path" 에Kafka Connect Avro Converter(https://www.confluent.io/hub/confluentinc/kafka-connect-avro-converter)를 압축 풀어서 두었습니다. connect 서버 재 가동 후, 아래 명령어로 Plugin 확인 하였는데 mysql connect 나 jdbc Source connect , jdbc sink connect 는 뜨는데 "avro" 관련된 plugin 이 보이지 않았습니다."curl --location --request GET 'localhost:8083/connector-plugins' | jq '.'" 그래서 위 에러가 Avro 를 못찾는다는 이유가, kafka에 avro 를 설정을 못한건지?Confluent Schema registry 에 avro 문제 인건지? 아니면 제가 Confluent kafka 가 아닌 apache kafka 로 설치 해서 인지 알수가 있을까요?   

안녕하세요 강의를 들으면서 cdc를 익히고 있는 수강생입니다.해당 강의 내용을 바탕으로 oracle --> kafka --> oracle 로 cdc 구성을 하고 있는데요. 구성 중 질문이 있어 남기게 되었습니다.A라는 테이블에 대해 source connector 와 sink connector 를 하나만 생성 했을 때는데이터 변경 시 정상적으로 빠르게 작동을 하는데요.추가적으로 B라는 테이블 source connector 와 sink connector 를 생성하면 A,B 모두 데이터 변경이 엄청 느립니다. 대략 5-10분 정도 뒤에 변경이 되는데요 원인이 무엇일까요? (sink 쪽에서 느립니다.)참고로 debezium 버전은 2.1 입니다.1.9에서는 최초 source connector 생성시 스냅샷 시간이 별로 걸리지 않았는데요, 2.1에서는 스냅샷 시간이 상당히 늘어났습니다. 혹시 다른 옵션이 있을까요? 매뉴얼에서는 찾지 못해 질문 드립니다."auto.evolve": "true" 옵션 사용 시 source 에서 컬럼을 추가하면 sink 에서도 생성이 되는 것은 확인했는데 source 에서 다시 컬럼을 삭제하면 sink 에서는 삭제가 안되는데요. 추가 해야 될 옵션이 있을까요? 아니면 아직 컬럼 삭제에 대한 지원이 되지 않는 것일 까요??참고로 제가 작성한 json 내용은 아래와 같습니다.#########################################################################################A 테이블 sourcecurl -i -X POST -H "Accept:application/json" -H "Content-Type:application/json" localhost:8083/connectors/ -d '{"name": "source_connector_af_claim","config" : {"connector.class" : "io.debezium.connector.oracle.OracleConnector","db_type":"oracle","tasks.max" : "1", "database.server.name" : "source_connector_01_af_claim","database.user" : "xxxxx","database.password" : "xxxxx","database.url": "jdbc:oracle:thin:@10.74.102.218:1521:aaa","database.dbname" : "aaa","database.out.server.name":"ora_source_af_claim_out", "schema.history.internal.kafka.bootstrap.servers" : "10.74.105.61:9092","schema.history.internal.kafka.topic": "ora_source_af_claim_history", "include.schema.changes": "true","database.connection.adapter": "logminer","topic.prefix": "ORA_SOURCE_01", "schema.include.list": "xxxxx","table.include.list":"xxxxx.AF_CLAIM","include.schema.changes": "true", "auto.evolve": "true","time.precision.mode": "connect", "key.converter": "org.apache.kafka.connect.json.JsonConverter","value.converter": "org.apache.kafka.connect.json.JsonConverter", "snapshot.mode" : "initial", "tombstones.on.delete": "true", "transforms": "rename_topic","transforms.rename_topic.type" : "org.apache.kafka.connect.transforms.RegexRouter","transforms.rename_topic.regex" : "ORA_SOURCE_01(.*)","transforms.rename_topic.replacement" : "source_$1", "transforms": "unwrap","transforms.unwrap.type": "io.debezium.transforms.ExtractNewRecordState","transforms.unwrap.drop.tombstones": "false" }}'#########################################################################################A 테이블 sinkcurl -i -X POST -H "Accept:application/json" -H "Content-Type:application/json" localhost:8083/connectors/ -d '{"name": "sink_connector_af-claim","config": {"connector.class": "io.confluent.connect.jdbc.JdbcSinkConnector","tasks.max": "1","table.name.format": "AF_CLAIM_TEST","topics": "ORA_SOURCE_01.xxxxx.AF_CLAIM", "connection.url": "jdbc:oracle:thin:@10.74.102.218:1521:aaa","connection.user": "xxxxx","connection.password": "xxxxx", "auto.evolve": "true","insert.mode": "upsert","delete.enabled": "true", "key.converter": "org.apache.kafka.connect.json.JsonConverter","value.converter": "org.apache.kafka.connect.json.JsonConverter", "table.include.list" : "xxxxx.AF_CLAIM","pk.fields": "AF_CLAIM_GROUP_NO , AF_CLAIM_NO","pk.mode": "record_key" }}'#########################################################################################B 테이블 sourcecurl -i -X POST -H "Accept:application/json" -H "Content-Type:application/json" localhost:8083/connectors/ -d '{"name": "source_connector_af_cs_mgmt","config" : {"connector.class" : "io.debezium.connector.oracle.OracleConnector","db_type":"oracle","tasks.max" : "1", "database.server.name" : "source_connector_02_af_cs_mgmt","database.user" : "xxxxx","database.password" : "xxxxx","database.url": "jdbc:oracle:thin:@10.74.102.218:1521:aaa","database.dbname" : "aaa","database.out.server.name":"ora_source_af_cs_mgmt_out", "schema.history.internal.kafka.bootstrap.servers" : "10.74.105.61:9092","schema.history.internal.kafka.topic": "ora_source_af_cs_mgmt_history", "schema.include.list": "xxxxx","include.schema.changes": "true","database.connection.adapter": "logminer","topic.prefix": "ORA_SOURCE_02","table.include.list":"xxxxx.AF_CS_MGMT","include.schema.changes": "true", "auto.evolve": "true","time.precision.mode": "connect", "key.converter": "org.apache.kafka.connect.json.JsonConverter","value.converter": "org.apache.kafka.connect.json.JsonConverter", "snapshot.mode" : "schema_only", "tombstones.on.delete": "true", "transforms": "rename_topic","transforms.rename_topic.type" : "org.apache.kafka.connect.transforms.RegexRouter","transforms.rename_topic.regex" : "ORA_SOURCE_02(.*)","transforms.rename_topic.replacement" : "source_$1", "transforms": "unwrap","transforms.unwrap.type": "io.debezium.transforms.ExtractNewRecordState","transforms.unwrap.drop.tombstones": "false"  }}'#########################################################################################B 테이블 sinkcurl -i -X POST -H "Accept:application/json" -H "Content-Type:application/json" localhost:8083/connectors/ -d '{"name": "sink-connector_af_cs_mgmt","config": {"connector.class": "io.confluent.connect.jdbc.JdbcSinkConnector","tasks.max": "1","table.name.format": "AF_CS_MGMT_TEST","topics": "ORA_SOURCE_02.xxxxx.AF_CS_MGMT", "connection.url": "jdbc:oracle:thin:@10.74.102.218:1521:aaa","connection.user": "xxxxx","connection.password": "xxxxx", "auto.evolve": "true","insert.mode": "upsert","delete.enabled": "true", "key.converter": "org.apache.kafka.connect.json.JsonConverter","value.converter": "org.apache.kafka.connect.json.JsonConverter", "table.include.list" : "xxxxx.AF_CS_MGMT","pk.fields": "AFCR_NO","pk.mode": "record_key" }}'   

워크플로우는 받은 파일 그대로 넣어서 다음과 같습니다.  working_day car-batch-log가 다음과 같습니다.  에러메시지는 이렇고 Main Class [org.apache.oozie.action.hadoop.Hive2Main], exit code [2] 로그는 다음과 같습니다.2023-03-10 10:42:47,347 INFO org.apache.oozie.service.JPAService: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[] No results found 2023-03-10 10:42:47,393 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@:start:] Start action [0000001-230310103158623-oozie-oozi-W@:start:] with user-retry state : userRetryCount [0], userRetryMax [0], userRetryInterval [10] 2023-03-10 10:42:47,397 INFO org.apache.oozie.action.control.StartActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@:start:] Starting action 2023-03-10 10:42:47,638 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@:start:] [***0000001-230310103158623-oozie-oozi-W@:start:***]Action status=DONE 2023-03-10 10:42:47,639 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@:start:] [***0000001-230310103158623-oozie-oozi-W@:start:***]Action updated in DB! 2023-03-10 10:42:47,656 INFO org.apache.oozie.action.control.StartActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@:start:] Action ended with external status [OK] 2023-03-10 10:42:47,691 INFO org.apache.oozie.service.JPAService: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@:start:] No results found 2023-03-10 10:42:47,718 INFO org.apache.oozie.command.wf.WorkflowNotificationXCommand: SERVER[server02.hadoop.com] USER[-] GROUP[-] TOKEN[-] APP[-] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@:start:] No Notification URL is defined. Therefore nothing to notify for job 0000001-230310103158623-oozie-oozi-W@:start: 2023-03-10 10:42:47,723 INFO org.apache.oozie.command.wf.WorkflowNotificationXCommand: SERVER[server02.hadoop.com] USER[-] GROUP[-] TOKEN[-] APP[-] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[] No Notification URL is defined. Therefore nothing to notify for job 0000001-230310103158623-oozie-oozi-W 2023-03-10 10:42:47,769 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-02d7] Start action [0000001-230310103158623-oozie-oozi-W@hive-02d7] with user-retry state : userRetryCount [0], userRetryMax [0], userRetryInterval [10] 2023-03-10 10:42:47,772 INFO org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-02d7] Starting action. Getting Action File System 2023-03-10 10:42:52,218 WARN org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-02d7] Invalid configuration value [null] defined for launcher max attempts count, using default [2]. 2023-03-10 10:42:52,218 INFO org.apache.oozie.action.hadoop.YarnACLHandler: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-02d7] Not setting ACLs because mapreduce.cluster.acls.enabled is set to false 2023-03-10 10:42:52,922 INFO org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-02d7] checking action, hadoop job ID [application_1678411853306_0005] status [RUNNING] 2023-03-10 10:42:52,933 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-02d7] [***0000001-230310103158623-oozie-oozi-W@hive-02d7***]Action status=RUNNING 2023-03-10 10:42:52,933 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-02d7] [***0000001-230310103158623-oozie-oozi-W@hive-02d7***]Action updated in DB! 2023-03-10 10:42:52,941 INFO org.apache.oozie.command.wf.WorkflowNotificationXCommand: SERVER[server02.hadoop.com] USER[-] GROUP[-] TOKEN[-] APP[-] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-02d7] No Notification URL is defined. Therefore nothing to notify for job 0000001-230310103158623-oozie-oozi-W@hive-02d7 2023-03-10 10:43:01,536 INFO org.apache.oozie.servlet.CallbackServlet: SERVER[server02.hadoop.com] USER[-] GROUP[-] TOKEN[-] APP[-] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-02d7] callback for action [0000001-230310103158623-oozie-oozi-W@hive-02d7] 2023-03-10 10:43:01,961 INFO org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-02d7] action completed, external ID [application_1678411853306_0005] 2023-03-10 10:43:01,997 INFO org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-02d7] Action ended with external status [SUCCEEDED] 2023-03-10 10:43:02,041 INFO org.apache.oozie.service.JPAService: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-02d7] No results found 2023-03-10 10:43:02,095 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-b93d] Start action [0000001-230310103158623-oozie-oozi-W@hive-b93d] with user-retry state : userRetryCount [0], userRetryMax [0], userRetryInterval [10] 2023-03-10 10:43:02,100 INFO org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-b93d] Starting action. Getting Action File System 2023-03-10 10:43:04,515 WARN org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-b93d] Invalid configuration value [null] defined for launcher max attempts count, using default [2]. 2023-03-10 10:43:04,515 INFO org.apache.oozie.action.hadoop.YarnACLHandler: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-b93d] Not setting ACLs because mapreduce.cluster.acls.enabled is set to false 2023-03-10 10:43:05,956 INFO org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-b93d] checking action, hadoop job ID [application_1678411853306_0006] status [RUNNING] 2023-03-10 10:43:05,978 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-b93d] [***0000001-230310103158623-oozie-oozi-W@hive-b93d***]Action status=RUNNING 2023-03-10 10:43:05,978 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-b93d] [***0000001-230310103158623-oozie-oozi-W@hive-b93d***]Action updated in DB! 2023-03-10 10:43:05,999 INFO org.apache.oozie.command.wf.WorkflowNotificationXCommand: SERVER[server02.hadoop.com] USER[-] GROUP[-] TOKEN[-] APP[-] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-b93d] No Notification URL is defined. Therefore nothing to notify for job 0000001-230310103158623-oozie-oozi-W@hive-b93d 2023-03-10 10:43:06,003 INFO org.apache.oozie.command.wf.WorkflowNotificationXCommand: SERVER[server02.hadoop.com] USER[-] GROUP[-] TOKEN[-] APP[-] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-02d7] No Notification URL is defined. Therefore nothing to notify for job 0000001-230310103158623-oozie-oozi-W@hive-02d7 2023-03-10 10:44:00,881 INFO org.apache.oozie.servlet.CallbackServlet: SERVER[server02.hadoop.com] USER[-] GROUP[-] TOKEN[-] APP[-] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-b93d] callback for action [0000001-230310103158623-oozie-oozi-W@hive-b93d] 2023-03-10 10:44:01,141 INFO org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-b93d] External Child IDs : [job_1678411853306_0007] 2023-03-10 10:44:01,145 INFO org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-b93d] action completed, external ID [application_1678411853306_0006] 2023-03-10 10:44:01,207 INFO org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-b93d] Action ended with external status [SUCCEEDED] 2023-03-10 10:44:01,271 INFO org.apache.oozie.service.JPAService: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-b93d] No results found 2023-03-10 10:44:01,589 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-d326] Start action [0000001-230310103158623-oozie-oozi-W@hive-d326] with user-retry state : userRetryCount [0], userRetryMax [0], userRetryInterval [10] 2023-03-10 10:44:01,592 INFO org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-d326] Starting action. Getting Action File System 2023-03-10 10:44:04,228 WARN org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-d326] Invalid configuration value [null] defined for launcher max attempts count, using default [2]. 2023-03-10 10:44:04,230 INFO org.apache.oozie.action.hadoop.YarnACLHandler: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-d326] Not setting ACLs because mapreduce.cluster.acls.enabled is set to false 2023-03-10 10:44:05,032 INFO org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-d326] checking action, hadoop job ID [application_1678411853306_0008] status [RUNNING] 2023-03-10 10:44:05,036 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-d326] [***0000001-230310103158623-oozie-oozi-W@hive-d326***]Action status=RUNNING 2023-03-10 10:44:05,036 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-d326] [***0000001-230310103158623-oozie-oozi-W@hive-d326***]Action updated in DB! 2023-03-10 10:44:05,042 INFO org.apache.oozie.command.wf.WorkflowNotificationXCommand: SERVER[server02.hadoop.com] USER[-] GROUP[-] TOKEN[-] APP[-] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-d326] No Notification URL is defined. Therefore nothing to notify for job 0000001-230310103158623-oozie-oozi-W@hive-d326 2023-03-10 10:44:05,042 INFO org.apache.oozie.command.wf.WorkflowNotificationXCommand: SERVER[server02.hadoop.com] USER[-] GROUP[-] TOKEN[-] APP[-] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-b93d] No Notification URL is defined. Therefore nothing to notify for job 0000001-230310103158623-oozie-oozi-W@hive-b93d 2023-03-10 10:44:13,249 INFO org.apache.oozie.servlet.CallbackServlet: SERVER[server02.hadoop.com] USER[-] GROUP[-] TOKEN[-] APP[-] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-d326] callback for action [0000001-230310103158623-oozie-oozi-W@hive-d326] 2023-03-10 10:44:13,716 INFO org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-d326] action completed, external ID [application_1678411853306_0008] 2023-03-10 10:44:13,727 WARN org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-d326] Launcher ERROR, reason: Main Class [org.apache.oozie.action.hadoop.Hive2Main], exit code [2] 2023-03-10 10:44:13,751 INFO org.apache.oozie.action.hadoop.Hive2ActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-d326] Action ended with external status [FAILED/KILLED] 2023-03-10 10:44:13,754 INFO org.apache.oozie.command.wf.ActionEndXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-d326] ERROR is considered as FAILED for SLA 2023-03-10 10:44:13,788 INFO org.apache.oozie.service.JPAService: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-d326] No results found 2023-03-10 10:44:13,815 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@Kill] Start action [0000001-230310103158623-oozie-oozi-W@Kill] with user-retry state : userRetryCount [0], userRetryMax [0], userRetryInterval [10] 2023-03-10 10:44:13,827 INFO org.apache.oozie.action.control.KillActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@Kill] Starting action 2023-03-10 10:44:13,831 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@Kill] [***0000001-230310103158623-oozie-oozi-W@Kill***]Action status=DONE 2023-03-10 10:44:13,831 INFO org.apache.oozie.command.wf.ActionStartXCommand: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@Kill] [***0000001-230310103158623-oozie-oozi-W@Kill***]Action updated in DB! 2023-03-10 10:44:13,859 INFO org.apache.oozie.action.control.KillActionExecutor: SERVER[server02.hadoop.com] USER[admin] GROUP[-] TOKEN[] APP[Subject 2 - Workflow] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@Kill] Action ended with external status [OK] 2023-03-10 10:44:14,218 INFO org.apache.oozie.command.wf.WorkflowNotificationXCommand: SERVER[server02.hadoop.com] USER[-] GROUP[-] TOKEN[-] APP[-] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@Kill] No Notification URL is defined. Therefore nothing to notify for job 0000001-230310103158623-oozie-oozi-W@Kill 2023-03-10 10:44:14,218 INFO org.apache.oozie.command.wf.WorkflowNotificationXCommand: SERVER[server02.hadoop.com] USER[-] GROUP[-] TOKEN[-] APP[-] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[] No Notification URL is defined. Therefore nothing to notify for job 0000001-230310103158623-oozie-oozi-W 2023-03-10 10:44:14,218 INFO org.apache.oozie.command.wf.WorkflowNotificationXCommand: SERVER[server02.hadoop.com] USER[-] GROUP[-] TOKEN[-] APP[-] JOB[0000001-230310103158623-oozie-oozi-W] ACTION[0000001-230310103158623-oozie-oozi-W@hive-d326] No Notification URL is defined. Therefore nothing to notify for job 0000001-230310103158623-oozie-oozi-W@hive-d326추가로 다른 질문에서 본 해결책으로 권한 설정을 하니 이렇게 뜹니다.   

안녕하세요?AWS EC2 우분투 서버를 사용하고 있습니다.Docker를 사용하면 AWS service(aws codeBuild , aws codeDeploy)를 사용하지 않고 CI/CD가 가능한가요? 코드는 react/next 입니다. 감사합니다.

안녕하세요 선생님 양질의 강의 너무 감사하게 잘듣고 있습니다.다름이아니라 강의를 듣던 중 궁금한 부분이 있어서 글을 남기게 되었습니다.Broker로 부터 통신을 한 후에 pendingCompletion(ConcurrentLinkedQueue) 에 response를 적재를 하고적재된 pendingCompletion 기준으로 Fetcher가 데이터를 가져오게 되는데 이 과정에서 Fetcher는 별도의 스레드로 동작하는지요?"Consumer Fetcher관련 주요 파라미터와 Fetcher 메커니즘의 이해: 13:22"

안녕하세요 강사님 좋은 강의 감사드립니다.docker run redis 명령어를 통해 redis 서버를 작동시키고 해당 컨테이너 안에서 redis-cli가 정삭적으로 연결되어 ping pong이 일어나는 것을 확인했습니다.제가 궁금한 것은 127.0.0.1:6379 가 현재 제 컴퓨터의 로컬에서 redis가 실행되고 있는 건가요..?cmd에서 netstat 을 입력해봐도 6379 포트로 listening하고 있는 프로세스를 확인할 수가 없는데 답변 주시면 감사드리겠습니다.(너무 기초적인 것을 질문했다면 죄송합니다,,)

안녕하세요! 선생님 강의 잘 듣고 있습니다.다름이 아니라커넥트 내부 토픽이해 - connect0offsets, connect-status, connect-config 강의 실습 중spool 커넥터를 띄워놓고 spooldir csv 메세지 보내는 과정에서커넥터가 정상 작동을 안하는 것 같아이부분을 반복했더니 커넥트 기동중 spool 커넥터에 에러가 잡히는데 혹시 해결방안 여쭤봐도 될까요 ?  커넥트 기동시 뜨는 에러 로그입니다. path annotation 이 비었다고 하는 것같은데 새로 지정을 어디서 해야 할까요?org.apache.kafka.connect.errors.ConnectException: Failed to start connector: csv_spooldir_source at org.apache.kafka.connect.runtime.distributed.DistributedHerder.lambda$startConnector$25(DistributedHerder.java:1461) at org.apache.kafka.connect.runtime.WorkerConnector.doTransitionTo(WorkerConnector.java:334) at org.apache.kafka.connect.runtime.WorkerConnector.doRun(WorkerConnector.java:140) at org.apache.kafka.connect.runtime.WorkerConnector.run(WorkerConnector.java:117) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at java.base/java.lang.Thread.run(Thread.java:829) Caused by: org.apache.kafka.connect.errors.ConnectException: Failed to transition connector csv_spooldir_source to state STARTED ... 8 more Caused by: java.lang.IllegalStateException: Could not find any input file(s) to infer schema from. at com.google.common.base.Preconditions.checkState(Preconditions.java:510) at com.github.jcustenborder.kafka.connect.spooldir.AbstractSpoolDirSourceConnector.start(AbstractSpoolDirSourceConnector.java:63) at org.apache.kafka.connect.runtime.WorkerConnector.doStart(WorkerConnector.java:184) at org.apache.kafka.connect.runtime.WorkerConnector.start(WorkerConnector.java:209) at org.apache.kafka.connect.runtime.WorkerConnector.doTransitionTo(WorkerConnector.java:348) at org.apache.kafka.connect.runtime.WorkerConnector.doTransitionTo(WorkerConnector.java:331) ... 7 more 3월 08, 2023 1:54:32 오후 org.glassfish.jersey.internal.Errors logErrors 경고: The following warnings have been detected: WARNING: The (sub)resource method listLoggers in org.apache.kafka.connect.runtime.rest.resources.LoggingResource contains empty path annotation. WARNING: The (sub)resource method createConnector in org.apache.kafka.connect.runtime.rest.resources.ConnectorsResource contains empty path annotation. WARNING: The (sub)resource method listConnectors in org.apache.kafka.connect.runtime.rest.resources.ConnectorsResource contains empty path annotation. WARNING: The (sub)resource method listConnectorPlugins in org.apache.kafka.connect.runtime.rest.resources.ConnectorPluginsResource contains empty path annotation. WARNING: The (sub)resource method serverInfo in org.apache.kafka.connect.runtime.rest.resources.RootResource contains empty path annotation. [2023-03-08 13:54:32,670] INFO Started o.e.j.s.ServletContextHandler@1e253c9d{/,null,AVAILABLE} (org.eclipse.jetty.server.handler.ContextHandler:915) [2023-03-08 13:54:32,671] INFO REST resources initialized; server is started and ready to handle requests (org.apache.kafka.connect.runtime.rest.RestServer:303) [2023-03-08 13:54:32,671] INFO Kafka Connect started (org.apache.kafka.connect.runtime.Connect:57) min@min-VirtualBox:~$ curl -X GET http://localhost:8083/connectors/csv_spooldir_source/status | jq '.' % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 1375 100 1375 0 0 8647 0 --:--:-- --:--:-- --:--:-- 8647 { "name": "csv_spooldir_source", "connector": { "state": "FAILED", "worker_id": "127.0.1.1:8083", "trace": "java.lang.IllegalStateException: Could not find any input file(s) to infer schema from.\n\tat com.google.common.base.Preconditions.checkState(Preconditions.java:510)\n\tat com.github.jcustenborder.kafka.connect.spooldir.AbstractSpoolDirSourceConnector.start(AbstractSpoolDirSourceConnector.java:63)\n\tat org.apache.kafka.connect.runtime.WorkerConnector.doStart(WorkerConnector.java:184)\n\tat org.apache.kafka.connect.runtime.WorkerConnector.start(WorkerConnector.java:209)\n\tat org.apache.kafka.connect.runtime.WorkerConnector.doTransitionTo(WorkerConnector.java:348)\n\tat org.apache.kafka.connect.runtime.WorkerConnector.doTransitionTo(WorkerConnector.java:331)\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$RunnableAdapter.call(Executors.java:515)\n\tat java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)\n\tat java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)\n\tat java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)\n\tat java.base/java.lang.Thread.run(Thread.java:829)\n" }, "tasks": [], "type": "source" }

안녕하세요 데브원영님. 수준높은 강의 항상 잘보고있습니다. 다름아니라, '멀티스레드 컨슈머 애플리케이션' 강의를 듣고 관련 내용을 찾아보던 와중에 '메세지 역전현상' 이라는 이슈를 찾았습니다.멀티 스레드 혹은 멀티 프로세스로 동작할경우, 파티션이 하나더라도 스레드의 작업종료 시간이 전부 다르기때문에 순서보장이 필요한 시스템에 치명적이라는 내용이였습니다. 이 문제를 해결하기 위해 메세지에 key와 partioner 인터페이스를 구현하더라도 파티션 수와 스레드 수가 1:1 매칭이 아닐 경우 순서가 틀어지거나, Key 설계를 잘못할 경우 특정파티션으로 데이터가 몰리게되어 scale-out을 한 의미가 퇴색 될 것 같아서요.'순서보장 + (다중 파티션 + 다중 컨슈머 설계로 성능확보)' 가 필요한 시스템에서 '메세지 역전현상' 문제를 해결 할수 있는 방법이 있을까요?.. 발행된 메세지가 DB에 적재되있을 경우, 최종 일관성(순서보장문제)을 DB에 조회하여 해결할 수 있을 것 같은데요!.. 저장소에 적재되지 않는 메세지일 경우 해당문제를 어떻게 풀어야될지 잘 모르겠네요 ... 관련하여 답변 부탁드리겠습니다!.. 확인 감사합니다.~