lk-1984 opened a new issue, #12571:
URL: https://github.com/apache/iceberg/issues/12571
### Apache Iceberg version
1.8.1 (latest release)
### Query engine
None
### Please describe the bug 🐞
I am trying to setup the converter for AVRO messages. I have built the
Iceberg Kafka Connect Sink to read a Kafka topic, and write into Iceberg table.
Now, I have a problem there.
```
2025-03-19 08:35:44 [2025-03-19 06:35:44,643] ERROR
[iceberg-sink-connector|task-0] WorkerSinkTask{id=iceberg-sink-connector-0}
Task threw an uncaught and unrecoverable exception. Task is being killed and
will not recover until manually restarted
(org.apache.kafka.connect.runtime.WorkerTask:234)
2025-03-19 08:35:44 java.lang.LinkageError: loader constraint violation:
when resolving method 'org.apache.avro.generic.GenericContainer
io.confluent.kafka.serializers.GenericContainerWithVersion.container()' the
class loader org.apache.kafka.connect.runtime.isolation.PluginClassLoader
@36902638 of the current class, io/confluent/connect/avro/AvroConverter, and
the class loader 'app' for the method's defining class,
io/confluent/kafka/serializers/GenericContainerWithVersion, have different
Class objects for the type org/apache/avro/generic/GenericContainer used in the
signature (io.confluent.connect.avro.AvroConverter is in unnamed module of
loader org.apache.kafka.connect.runtime.isolation.PluginClassLoader @36902638,
parent loader org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader
@dd8ba08; io.confluent.kafka.serializers.GenericContainerWithVersion is in
unnamed module of loader 'app')
```
I have added `kafka-connect-avro-converter-7.9.0.jar` which has the
`io.confluent.connect.avro.AvroConverter`.
The `kafka-connect-avro-converter` wants Avro 1.11.4, but Iceberg 1.8.1 has
already Avro 1.12.0 for the Iceberg Kafka Connect Sink. I have a feeling that
this is causing the error above.
My JARs.
```
./jaxb-impl-2.2.3-1.jar
./jetty-webapp-9.4.53.v20231009.jar
./glue-2.29.45.jar
./curator-client-5.2.0.jar
./threeten-extra-1.7.1.jar
./hive-shims-2.3.9.jar
./annotations-2.29.45.jar
./annotations-4.1.1.4.jar
./httpcore-4.4.16.jar
./hadoop-yarn-common-3.4.1.jar
./gax-httpjson-2.58.0.jar
./kerby-pkix-2.0.3.jar
./http-auth-spi-2.29.45.jar
./jna-5.13.0.jar
./reload4j-1.2.22.jar
./grpc-protobuf-lite-1.68.1.jar
./google-auth-library-credentials-1.30.0.jar
./google-api-client-2.7.0.jar
./http-client-spi-2.29.45.jar
./retries-2.29.45.jar
./netty-all-4.1.100.Final.jar
./grpc-protobuf-1.68.1.jar
./google-auth-library-oauth2-http-1.30.0.jar
./netty-codec-redis-4.1.100.Final.jar
./opencensus-proto-0.2.0.jar
./javolution-5.5.1.jar
./jersey-json-1.22.0.jar
./http-auth-aws-2.29.45.jar
./google-api-services-storage-v1-rev20241008-2.0.0.jar
./jta-1.1.jar
./opentelemetry-context-1.42.1.jar
./lakeformation-2.29.45.jar
./jackson-datatype-jsr310-2.18.2.jar
./sts-2.29.45.jar
./oauth2-oidc-sdk-11.18.jar
./metrics-spi-2.29.45.jar
./aopalliance-1.0.jar
./jackson-module-jaxb-annotations-2.18.2.jar
./websocket-api-9.4.53.v20231009.jar
./datanucleus-api-jdo-4.2.4.jar
./hadoop-mapreduce-client-common-3.4.1.jar
./netty-codec-http-4.1.115.Final.jar
./gson-2.11.0.jar
./iceberg-common-1.8.0-SNAPSHOT.jar
./jackson-annotations-2.18.2.jar
./caffeine-2.9.3.jar
./dnsjava-3.6.1.jar
./jetty-util-ajax-9.4.53.v20231009.jar
./jackson-databind-2.18.2.jar
./netty-buffer-4.1.115.Final.jar
./javax.jdo-3.2.0-m3.jar
./netty-codec-stomp-4.1.100.Final.jar
./json-utils-2.29.45.jar
./grpc-rls-1.68.1.jar
./commons-codec-1.17.1.jar
./netty-transport-native-epoll-4.1.115.Final-linux-x86_64.jar
./dynamodb-2.29.45.jar
./checksums-spi-2.29.45.jar
./google-http-client-1.45.0.jar
./javax.annotation-api-1.3.2.jar
./auth-2.29.45.jar
./slf4j-reload4j-1.7.36.jar
./protobuf-java-util-4.28.3.jar
./netty-common-4.1.115.Final.jar
./kerby-asn1-2.0.3.jar
./woodstox-core-6.7.0.jar
./google-cloud-core-2.48.0.jar
./azure-storage-common-12.28.0.jar
./iceberg-kafka-connect-1.8.0-SNAPSHOT.jar
./http-auth-2.29.45.jar
./commons-cli-1.5.0.jar
./netty-transport-classes-epoll-4.1.115.Final.jar
./zookeeper-jute-3.8.4.jar
./netty-codec-socks-4.1.115.Final.jar
./hadoop-hdfs-client-3.4.1.jar
./netty-codec-dns-4.1.112.Final.jar
./endpoints-spi-2.29.45.jar
./api-common-2.41.0.jar
./regions-2.29.45.jar
./opentelemetry-api-1.42.1.jar
./curator-framework-5.2.0.jar
./annotations-17.0.0.jar
./commons-logging-1.3.0.jar
./identity-spi-2.29.45.jar
./libthrift-0.9.3.jar
./kerby-config-2.0.3.jar
./guice-4.2.3.jar
./parquet-jackson-1.15.0.jar
./hive-common-2.3.9.jar
./netty-codec-smtp-4.1.100.Final.jar
./netty-transport-4.1.115.Final.jar
./antlr-runtime-3.5.2.jar
./reactor-netty-http-1.0.48.jar
./error_prone_annotations-2.35.1.jar
./kerb-util-2.0.3.jar
./netty-handler-proxy-4.1.115.Final.jar
./animal-sniffer-annotations-1.24.jar
./aws-query-protocol-2.29.45.jar
./grpc-core-1.68.1.jar
./hadoop-shaded-guava-1.3.0.jar
./hadoop-hdfs-3.4.1.jar
./netty-codec-mqtt-4.1.100.Final.jar
./iam-2.29.45.jar
./protocol-core-2.29.45.jar
./azure-storage-file-datalake-12.22.0.jar
./opencsv-2.3.jar
./opentelemetry-semconv-1.25.0-alpha.jar
./netty-handler-4.1.115.Final.jar
./asm-9.6.jar
./grpc-alts-1.68.1.jar
./utils-2.29.45.jar
./zookeeper-3.8.4.jar
./azure-json-1.3.0.jar
./datanucleus-core-4.1.17.jar
./grpc-auth-1.68.1.jar
./commons-net-3.9.0.jar
./opencensus-api-0.31.1.jar
./logback-core-1.2.13.jar
./ant-1.9.1.jar
./hadoop-annotations-3.4.1.jar
./hadoop-mapreduce-client-jobclient-3.4.1.jar
./javax.servlet-api-3.1.0.jar
./iceberg-hive-metastore-1.8.0-SNAPSHOT.jar
./jline-3.9.0.jar
./commons-io-2.16.1.jar
./opentelemetry-sdk-trace-1.42.1.jar
./hadoop-shaded-protobuf_3_25-1.3.0.jar
./iceberg-aws-1.8.0-SNAPSHOT.jar
./perfmark-api-0.27.0.jar
./orc-core-1.9.5-nohive.jar
./lang-tag-1.7.jar
./proto-google-iam-v1-1.44.0.jar
./jetty-util-9.4.53.v20231009.jar
./protobuf-java-4.28.3.jar
./aws-json-protocol-2.29.45.jar
./shared-resourcemapping-0.32.0.jar
./azure-storage-blob-12.29.0.jar
./websocket-common-9.4.53.v20231009.jar
./netty-transport-rxtx-4.1.100.Final.jar
./content-type-2.3.jar
./iceberg-api-1.8.0-SNAPSHOT.jar
./aircompressor-2.0.2.jar
./grpc-netty-shaded-1.68.1.jar
./netty-transport-native-kqueue-4.1.115.Final-osx-x86_64.jar
./jcip-annotations-1.0-1.jar
./hadoop-yarn-client-3.4.1.jar
./nimbus-jose-jwt-9.40.jar
./arns-2.29.45.jar
./azure-identity-1.14.2.jar
./orc-core-1.9.5.jar
./jetty-io-9.4.53.v20231009.jar
./checksums-2.29.45.jar
./gax-grpc-2.58.0.jar
./opentelemetry-gcp-resources-1.37.0-alpha.jar
./netty-resolver-dns-native-macos-4.1.112.Final-osx-aarch_64.jar
./netty-codec-haproxy-4.1.100.Final.jar
./kafka-connect-avro-converter-7.9.0.jar
./sso-2.29.45.jar
./google-oauth-client-1.36.0.jar
./zstd-jni-1.5.6-6.jar
./commons-pool-1.6.jar
./commons-compress-1.27.1.jar
./opentelemetry-api-incubator-1.42.1-alpha.jar
./profiles-2.29.45.jar
./hadoop-auth-3.4.1.jar
./netty-tcnative-classes-2.0.69.Final.jar
./failureaccess-1.0.2.jar
./netty-transport-native-kqueue-4.1.115.Final-osx-aarch_64.jar
./netty-codec-xml-4.1.100.Final.jar
./websocket-client-9.4.53.v20231009.jar
./stax2-api-4.2.2.jar
./google-http-client-appengine-1.45.0.jar
./kms-2.29.45.jar
./commons-dbcp-1.4.jar
./netty-handler-ssl-ocsp-4.1.100.Final.jar
./proto-google-common-protos-2.49.0.jar
./iceberg-azure-1.8.0-SNAPSHOT.jar
./RoaringBitmap-1.3.0.jar
./hadoop-aws-3.4.1.jar
./proto-google-cloud-storage-v2-2.45.0-beta.jar
./opentelemetry-sdk-logs-1.42.1.jar
./netty-resolver-dns-native-macos-4.1.112.Final-osx-x86_64.jar
./datanucleus-rdbms-4.1.19.jar
./grpc-api-1.68.1.jar
./derby-10.10.2.0.jar
./grpc-services-1.68.1.jar
./azure-core-http-netty-1.15.7.jar
./azure-xml-1.1.0.jar
./listenablefuture-9999.0-empty-to-avoid-conflict-with-guava.jar
./opencensus-contrib-http-util-0.31.1.jar
./metrics-core-3.2.4.jar
./jdo-api-3.0.1.jar
./jsp-api-2.1.jar
./kerb-core-2.0.3.jar
./azure-core-1.54.1.jar
./hive-metastore-2.3.9.jar
./opentelemetry-sdk-common-1.42.1.jar
./apache-client-2.29.45.jar
./jaxb-api-2.2.12.jar
./grpc-inprocess-1.68.1.jar
./grpc-stub-1.68.1.jar
./proto-google-cloud-monitoring-v3-3.55.0.jar
./jakarta.activation-api-1.2.2.jar
./j2objc-annotations-3.0.0.jar
./commons-math3-3.6.1.jar
./snappy-java-1.1.10.7.jar
./crt-core-2.29.45.jar
./jna-platform-5.13.0.jar
./netty-transport-sctp-4.1.100.Final.jar
./grpc-opentelemetry-1.68.1.jar
./netty-transport-native-epoll-4.1.115.Final.jar
./orc-shims-1.9.5.jar
./iceberg-orc-1.8.0-SNAPSHOT.jar
./grpc-context-1.68.1.jar
./jackson-jaxrs-json-provider-2.18.2.jar
./netty-resolver-dns-4.1.112.Final.jar
./gapic-google-cloud-storage-v2-2.45.0-beta.jar
./jetty-servlet-9.4.53.v20231009.jar
./slf4j-api-2.0.16.jar
./commons-text-1.11.0.jar
./libfb303-0.9.3.jar
./commons-collections-3.2.2.jar
./kerby-util-2.0.3.jar
./s3-2.29.45.jar
./conscrypt-openjdk-uber-2.5.2.jar
./aws-core-2.29.45.jar
./netty-codec-http2-4.1.115.Final.jar
./detector-resources-support-0.32.0.jar
./joda-time-2.8.1.jar
./jettison-1.5.4.jar
./json-smart-2.5.1.jar
./netty-transport-native-epoll-4.1.115.Final-linux-aarch_64.jar
./checker-qual-3.47.0.jar
./iceberg-kafka-connect-events-1.8.0-SNAPSHOT.jar
./iceberg-gcp-1.8.0-SNAPSHOT.jar
./httpclient5-5.4.1.jar
./httpcore5-5.3.1.jar
./parquet-encoding-1.15.0.jar
./hive-serde-2.3.9.jar
./hadoop-client-3.4.1.jar
./ant-launcher-1.9.1.jar
./hive-shims-common-2.3.9.jar
./bcprov-jdk18on-1.78.1.jar
./s3-transfer-manager-2.31.1.jar
./audience-annotations-0.12.0.jar
./avro-1.12.0.jar
./msal4j-1.17.2.jar
./reactive-streams-1.0.4.jar
./curator-recipes-5.2.0.jar
./jline-2.12.jar
./metrics-jvm-3.1.0.jar
./commons-beanutils-1.9.4.jar
./eventstream-1.0.1.jar
./kerb-crypto-2.0.3.jar
./grpc-googleapis-1.68.1.jar
./aws-crt-0.33.3.jar
./netty-resolver-4.1.115.Final.jar
./opentelemetry-sdk-1.42.1.jar
./sdk-core-2.29.45.jar
./auto-value-annotations-1.11.0.jar
./accessors-smart-2.5.1.jar
./google-cloud-monitoring-3.55.0.jar
./msal4j-persistence-extension-1.3.0.jar
./jsch-0.1.55.jar
./netty-transport-udt-4.1.100.Final.jar
./jetty-security-9.4.53.v20231009.jar
./grpc-util-1.68.1.jar
./netty-codec-memcache-4.1.100.Final.jar
./commons-configuration2-2.10.1.jar
./grpc-google-cloud-storage-v2-2.45.0-beta.jar
./exporter-metrics-0.31.0.jar
./google-cloud-storage-2.45.0.jar
./bonecp-0.8.0.RELEASE.jar
./reactor-core-3.4.41.jar
./google-cloud-core-grpc-2.48.0.jar
./commons-lang-2.6.jar
./logback-classic-1.2.13.jar
./parquet-column-1.15.0.jar
./iceberg-core-1.8.0-SNAPSHOT.jar
./retries-spi-2.29.45.jar
./iceberg-parquet-1.8.0-SNAPSHOT.jar
./google-http-client-jackson2-1.45.0.jar
./hadoop-common-3.4.1.jar
./gax-2.58.0.jar
./httpclient-4.5.13.jar
./netty-nio-client-2.29.45.jar
./netty-transport-classes-kqueue-4.1.115.Final.jar
./jackson-jaxrs-base-2.18.2.jar
./jackson-core-2.18.2.jar
./azure-storage-internal-avro-12.14.0.jar
./commons-lang3-3.16.0.jar
./metrics-json-3.1.0.jar
./netty-transport-native-unix-common-4.1.115.Final.jar
./jetty-http-9.4.53.v20231009.jar
./google-http-client-apache-v2-1.45.0.jar
./threetenbp-1.7.0.jar
./hive-storage-api-2.4.0.jar
./parquet-hadoop-1.15.0.jar
./hadoop-yarn-api-3.4.1.jar
./jsr305-3.0.2.jar
./parquet-common-1.15.0.jar
./third-party-jackson-core-2.29.45.jar
./netty-codec-4.1.115.Final.jar
./netty-resolver-dns-classes-macos-4.1.112.Final.jar
./opentelemetry-sdk-extension-autoconfigure-spi-1.42.1.jar
./aws-xml-protocol-2.29.45.jar
./guava-33.3.1-jre.jar
./iceberg-bundled-guava-1.8.0-SNAPSHOT.jar
./re2j-1.7.jar
./iceberg-data-1.8.0-SNAPSHOT.jar
./jetty-xml-9.4.53.v20231009.jar
./grpc-grpclb-1.68.1.jar
./javax.inject-1.jar
./grpc-s2a-1.68.1.jar
./jetty-client-9.4.53.v20231009.jar
./hadoop-mapreduce-client-core-3.4.1.jar
./google-cloud-core-http-2.48.0.jar
./netty-tcnative-boringssl-static-2.0.69.Final.jar
./hive-shims-0.23-2.3.9.jar
./grpc-xds-1.68.1.jar
./google-http-client-gson-1.45.0.jar
./parquet-avro-1.15.0.jar
./reactor-netty-core-1.0.48.jar
./http-auth-aws-eventstream-2.29.45.jar
./parquet-format-structures-1.15.0.jar
./opentelemetry-sdk-metrics-1.42.1.jar
./hive-shims-scheduler-2.3.9.jar
./httpcore5-h2-5.3.1.jar
./http-auth-aws-crt-2.29.45.jar
./failsafe-3.3.2.jar
```
### Willingness to contribute
- [ ] I can contribute a fix for this bug independently
- [ ] I would be willing to contribute a fix for this bug with guidance from
the Iceberg community
- [ ] I cannot contribute a fix for this bug at this time
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