Danny Cranmer created FLINK-20350:
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Summary: [Kinesis][GCP PubSub] Incompatible Connectors due to Guava conflict
Key: FLINK-20350
URL:
https://issues.apache.org/jira/browse/FLINK-20350 Project: Flink
Issue Type: Bug
Components: Connectors / Google Cloud PubSub, Connectors / Kinesis
Affects Versions: 1.11.2, 1.11.1
Reporter: Danny Cranmer
*Problem*
Kinesis and GCP PubSub connector do not work together. The following error is thrown.
{code}
java.lang.NoClassDefFoundError: Could not initialize class io.grpc.netty.shaded.io.grpc.netty.NettyChannelBuilder
at org.apache.flink.streaming.connectors.gcp.pubsub.DefaultPubSubSubscriberFactory.getSubscriber(DefaultPubSubSubscriberFactory.java:52) ~[flink-connector-gcp-pubsub_2.11-1.11.1.jar:1.11.1]
at org.apache.flink.streaming.connectors.gcp.pubsub.PubSubSource.createAndSetPubSubSubscriber(PubSubSource.java:213) ~[flink-connector-gcp-pubsub_2.11-1.11.1.jar:1.11.1]
at org.apache.flink.streaming.connectors.gcp.pubsub.PubSubSource.open(PubSubSource.java:102) ~[flink-connector-gcp-pubsub_2.11-1.11.1.jar:1.11.1]
at org.apache.flink.api.common.functions.util.FunctionUtils.openFunction(FunctionUtils.java:36) ~[flink-core-1.11.1.jar:1.11.1]
at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.open(AbstractUdfStreamOperator.java:102) ~[flink-streaming-java_2.11-1.11.1.jar:1.11.1]
at org.apache.flink.streaming.runtime.tasks.OperatorChain.initializeStateAndOpenOperators(OperatorChain.java:291) ~[flink-streaming-java_2.11-1.11.1.jar:1.11.1]
at org.apache.flink.streaming.runtime.tasks.StreamTask.lambda$beforeInvoke$0(StreamTask.java:473) ~[flink-streaming-java_2.11-1.11.1.jar:1.11.1]
at org.apache.flink.streaming.runtime.tasks.StreamTaskActionExecutor$SynchronizedStreamTaskActionExecutor.runThrowing(StreamTaskActionExecutor.java:92) ~[flink-streaming-java_2.11-1.11.1.jar:1.11.1]
at org.apache.flink.streaming.runtime.tasks.StreamTask.beforeInvoke(StreamTask.java:469) ~[flink-streaming-java_2.11-1.11.1.jar:1.11.1]
at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:522) ~[flink-streaming-java_2.11-1.11.1.jar:1.11.1]
at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:721) ~[flink-runtime_2.11-1.11.1.jar:1.11.1]
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:546) ~[flink-runtime_2.11-1.11.1.jar:1.11.1]
at java.lang.Thread.run(Thread.java:748) ~[?:1.8.0_252]
{code}
*Cause*
This is caused by a Guava dependency conflict:
- Kinesis Consumer > {{18.0}}
- GCP PubSub > {{26.0-android}}
{{NettyChannelBuilder}} fails to initialise due to missing method in guava:
- {{com.google.common.base.Preconditions.checkArgument(ZLjava/lang/String;CLjava/lang/Object;)V}}
*Possible Fixes*
- Align Guava versions
- Shade Guava in either connector
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