Caused by: java.lang.NoClassDefFoundError: org/apache/iceberg/IcebergBuild

[saramorsi]

Apache Iceberg version

1.9.2

Query engine

Kafka Connect

Please describe the bug 🐞

I’m running into this issue when trying to deploy the target connector (Confluent Iceberg Sink Connector) using the self-hosted zip here: https://www.confluent.io/hub/iceberg/iceberg-kafka-connect.
Has anyone run into this issue before? If so, what should I be checking to make sure the Iceberg class is found.

Caused by: java.lang.NoClassDefFoundError: org/apache/iceberg/IcebergBuild
	at org.apache.iceberg.connect.IcebergSinkConfig.version(IcebergSinkConfig.java:109) ~[iceberg-kafka-connect-1.9.2.jar:?]
	at org.apache.iceberg.connect.IcebergSinkConnector.version(IcebergSinkConnector.java:37) ~[iceberg-kafka-connect-1.9.2.jar:?]
	at org.apache.kafka.connect.runtime.AbstractHerder.validateConnectorConfig(AbstractHerder.java:847) ~[connect-runtime-8.1.0-ccs.jar:?]
	at org.apache.kafka.connect.runtime.AbstractHerder.lambda$validateConnectorConfig$3(AbstractHerder.java:609) ~[connect-runtime-8.1.0-ccs.jar:?]
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:?]
	at java.base/java.util.concurrent.FutureTask.run(Unknown Source) ~[?:?]
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) ~[?:?]
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) ~[?:?]
	... 1 more
Caused by: java.lang.ClassNotFoundException: org.apache.iceberg.IcebergBuild
	at org.apache.iceberg.connect.IcebergSinkConfig.version(IcebergSinkConfig.java:109) ~[iceberg-kafka-connect-1.9.2.jar:?]
	at org.apache.iceberg.connect.IcebergSinkConnector.version(IcebergSinkConnector.java:37) ~[iceberg-kafka-connect-1.9.2.jar:?]
	at org.apache.kafka.connect.runtime.AbstractHerder.validateConnectorConfig(AbstractHerder.java:847) ~[connect-runtime-8.1.0-ccs.jar:?]
	at org.apache.kafka.connect.runtime.AbstractHerder.lambda$validateConnectorConfig$3(AbstractHerder.java:609) ~[connect-runtime-8.1.0-ccs.jar:?]
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:?]
	at java.base/java.util.concurrent.FutureTask.run(Unknown Source) ~[?:?]
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) ~[?:?]
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) ~[?:?]
	... 1 more

How I’m pulling the zip and where I’m storing it:

RUN curl -L https://hub-downloads.confluent.io/api/plugins/iceberg/iceberg-kafka-connect/versions/1.9.2/iceberg-iceberg-kafka-connect-1.9.2.zip -o /tmp/iceberg-iceberg-kafka-connect-1.9.2.zip && \
    mkdir -p /usr/share/confluent-hub-components/iceberg-iceberg-kafka-connect && \
    unzip /tmp/iceberg-iceberg-kafka-connect-1.9.2.zip -d /usr/share/confluent-hub-components/iceberg-iceberg-kafka-connect && \
    rm /tmp/iceberg-iceberg-kafka-connect-1.9.2.zip

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