Yeah, new version of Kafka connector is needed to use 2.x.
On Wed, Apr 2, 2025 at 4:56 PM Gulan, Jacob <jacob.gu...@duke-energy.com> wrote: > I'm able to use the 2.x line, but I see that the "flink-connector-kafka" > latest version is still on 3.4.0-1.20 with no 2.0 tag yet. Will I need to > wait for the 2.x tag to be released? > > ________________________________ > From: Gabor Somogyi <gabor.g.somo...@gmail.com> > Sent: Wednesday, April 2, 2025 10:13 AM > To: dev@flink.apache.org <dev@flink.apache.org> > Subject: [EXTERNAL] Re: Executing PyFlink Cluster > > *** CAUTION! EXTERNAL SENDER *** STOP. ASSESS. VERIFY!! Were you expecting > this email? Are grammar and spelling correct? Does the content make sense? > Can you verify the sender? If suspicious report it, then do not click > links, open attachments or enter your ID or password. > > I think I've already fixed this here [1] but only on 2.x line. > Up until now I thought that only 2.x is using YAML based configs... > > [1] https://github.com/apache/flink/pull/26327 > > BR, > G > > > On Wed, Apr 2, 2025 at 4:08 PM Andreas Bube <ab...@toogoodtogo.com.invalid > > > wrote: > > > There's an open issue that looks very similar: > > https://issues.apache.org/jira/browse/FLINK-36457. No idea how to work > > around this. > > > > On Wed, 2 Apr 2025 at 15:13, Gulan, Jacob <jacob.gu...@duke-energy.com> > > wrote: > > > > > Hello, > > > > > > I've been running into a wall for the past few days trying to get my > > > PyFlink cluster running in a Docker container on my local machine. > > > > > > However, whenever I get to the point in my code where I need to run > > > env.execute(), I see the following error (full stack trace at bottom of > > > email): > > > > > > ``` > > > java.net.MalformedURLException: no protocol: > > > ['file:/opt/flink/opt/flink-python-1.19.2.jar'] > > > ``` > > > > > > It appears that the `file://` prefix is being shortened to `file:`, but > > > I'm not setting this anywhere in my code, leading me to believe there's > > > underlying behavior that's creating this inaccurate file path. > > > > > > If this error is familiar, I would appreciate any advice as to how to > > > remediate the issue. I've attached code snippets to this file of my > > current > > > implementation. I've tried using both versions 1.19.2 and 1.20.1. > > > > > > Thank you for any assistance you may be able to provide. > > > > > > > > > CODE SNIPPET: > > > ``` > > > def parse_record(record: str) -> dict: > > > return json.loads(record) > > > > > > > > > def initialize_environment() -> StreamExecutionEnvironment: > > > """Initialize the Flink environment""" > > > env = StreamExecutionEnvironment.get_execution_environment() > > > > > > flink_kafka_connector_path: str = str( > > > (JAR_DIR / "flink-connector-kafka-3.3.0-1.19.jar").resolve() > > > ) > > > flink_python_path: str = str( > > > (JAR_DIR.parent / "opt" / "flink-python-1.19.2.jar").resolve() > > > ) > > > > > > print(f"flink_kafka_connector_path: {flink_kafka_connector_path}") > > > print(f"flink_python_path: {flink_python_path}") > > > > > > env.add_jars(f"file://{flink_kafka_connector_path}", > > > f"[file://{flink_python_path}]file://{flink_python_path}") > > > return env > > > > > > > > > def main() -> None: > > > env: StreamExecutionEnvironment = initialize_environment() > > > > > > kafka_properties = { > > > "bootstrap.servers": BROKERS, > > > "security.protocol": "SASL_SSL", > > > "sasl.mechanism": "PLAIN", > > > "sasl.jaas.config": > > > f"org.apache.kafka.common.security.plain.PlainLoginModule required > > > username='{USERNAME}' password='{PASSWORD}';", > > > } > > > > > > kafka_source: KafkaSource = ( > > > KafkaSource.builder() > > > .set_topics(SOURCE_TOPIC) > > > .set_properties(kafka_properties) > > > .set_starting_offsets(KafkaOffsetsInitializer.earliest()) > > > .set_value_only_deserializer(SimpleStringSchema()) > > > .build() > > > ) > > > > > > kafka_sink: KafkaSink = ( > > > KafkaSink.builder() > > > .set_bootstrap_servers(BROKERS) > > > .set_record_serializer( > > > KafkaRecordSerializationSchema.builder() > > > .set_topic(DESTINATION_TOPIC) > > > .set_value_serialization_schema(SimpleStringSchema()) > > > .build() > > > ) > > > .set_delivery_guarantee(DeliveryGuarantee.AT_LEAST_ONCE) > > > .build() > > > ) > > > > > > data_stream = env.from_source( > > > kafka_source, > > > WatermarkStrategy.no_watermarks(), > > > "Kafka Source", > > > ) > > > transformed_data = data_stream.map(parse_record, > > > output_type=Types.STRING()) > > > transformed_data.sink_to(kafka_sink) > > > > > > print("START EXECUTING!") > > > > > > env.execute() > > > > > > > > > if __name__ == "__main__": > > > main() > > > ``` > > > > > > > > > > > > DOCKERFILE: > > > > > > ``` > > > > > > > > > ############################################################################## > > > # Stage 1 - Build uber jar using Maven > > > > > > > > > ############################################################################## > > > > > > # Set arguments for image versions > > > ARG JAVA_VERSION=11 > > > ARG FLINK_VERSION=1.19 > > > ARG SCALA_VERSION=scala_2.12 > > > > > > # Source build image > > > FROM maven:3.9-amazoncorretto-${JAVA_VERSION} AS build > > > > > > # Build jars > > > WORKDIR /build > > > COPY pom.xml . > > > RUN mvn dependency:copy-dependencies -DoutputDirectory=/build/jars > > > > > > > > > > > > > > > ############################################################################## > > > # Stage 2 - Create the final image > > > > > > > > > ############################################################################## > > > > > > # Source image > > > FROM flink:${FLINK_VERSION}-${SCALA_VERSION}-java${JAVA_VERSION} > > > > > > # Install Python > > > RUN apt-get update && apt-get install -y python3.11 python3-pip > > > > > > # Copy the built jars from the Maven stage > > > COPY --from=build /build/jars /opt/flink/lib > > > > > > # Create symlink so that "python" points to "python3.11" > > > RUN ln -s /usr/bin/python3.11 /usr/bin/python > > > > > > # Set the working directory > > > WORKDIR /opt/flink/src > > > > > > # Copy the Python project files > > > COPY pyproject.toml . > > > COPY README.md . > > > COPY dataproducts /opt/flink/src/dataproducts > > > > > > # Go get a cup of coffee, this will take a while ☕ > > > RUN python3.11 -m pip install . \ > > > --no-cache-dir > > > ``` > > > > > > STACK TRACE: > > > ``` > > > root@9e14f49ae422:/opt/flink/src/dataproducts# flink run -py main.py > > > WARNING: Unknown module: jdk.compiler specified to --add-exports > > > WARNING: Unknown module: jdk.compiler specified to --add-exports > > > WARNING: Unknown module: jdk.compiler specified to --add-exports > > > WARNING: Unknown module: jdk.compiler specified to --add-exports > > > WARNING: Unknown module: jdk.compiler specified to --add-exports > > > flink_kafka_connector_path: > > > /opt/flink/lib/flink-connector-kafka-3.3.0-1.19.jar > > > flink_python_path: /opt/flink/opt/flink-python-1.19.2.jar > > > START EXECUTING! > > > Traceback (most recent call last): > > > File "/opt/flink/src/dataproducts/main.py", line 97, in <module> > > > main() > > > File "/opt/flink/src/dataproducts/main.py", line 93, in main > > > env.execute() > > > File > > > > > > "/opt/flink/opt/python/pyflink.zip/pyflink/datastream/stream_execution_environment.py", > > > line 813, in execute > > > File > > "/opt/flink/opt/python/py4j-0.10.9.7-src.zip/py4j/java_gateway.py", > > > line 1322, in __call__ > > > File "/opt/flink/opt/python/pyflink.zip/pyflink/util/exceptions.py", > > > line 146, in deco > > > File "/opt/flink/opt/python/py4j-0.10.9.7-src.zip/py4j/protocol.py", > > > line 326, in get_return_value > > > py4j.protocol.Py4JJavaError: An error occurred while calling > o0.execute. > > > : java.net.MalformedURLException: no protocol: > > > ['file:/opt/flink/opt/flink-python-1.19.2.jar'] > > > at java.base/java.net.URL.<init>(Unknown Source) > > > at java.base/java.net.URL.<init>(Unknown Source) > > > at java.base/java.net.URL.<init>(Unknown Source) > > > at > > > > > > org.apache.flink.configuration.ConfigUtils.decodeListFromConfig(ConfigUtils.java:133) > > > at > > > > > > org.apache.flink.client.cli.ExecutionConfigAccessor.getJars(ExecutionConfigAccessor.java:77) > > > at > > > > > > org.apache.flink.client.deployment.executors.PipelineExecutorUtils.getJobGraph(PipelineExecutorUtils.java:77) > > > at > > > > > > org.apache.flink.client.deployment.executors.AbstractSessionClusterExecutor.execute(AbstractSessionClusterExecutor.java:72) > > > at > > > > > > org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.executeAsync(StreamExecutionEnvironment.java:2440) > > > at > > > > > > org.apache.flink.client.program.StreamContextEnvironment.executeAsync(StreamContextEnvironment.java:188) > > > at > > > > > > org.apache.flink.client.program.StreamContextEnvironment.execute(StreamContextEnvironment.java:117) > > > at > > > java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native > > > Method) > > > at > > > java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown > > > Source) > > > at > > > > > > java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown > > > Source) > > > at java.base/java.lang.reflect.Method.invoke(Unknown Source) > > > at > > > > > > org.apache.flink.api.python.shaded.py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:244) > > > at > > > > > > org.apache.flink.api.python.shaded.py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:374) > > > at > > > > org.apache.flink.api.python.shaded.py4j.Gateway.invoke(Gateway.java:282) > > > at > > > > > > org.apache.flink.api.python.shaded.py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132) > > > at > > > > > > org.apache.flink.api.python.shaded.py4j.commands.CallCommand.execute(CallCommand.java:79) > > > at > > > > > > org.apache.flink.api.python.shaded.py4j.GatewayConnection.run(GatewayConnection.java:238) > > > at java.base/java.lang.Thread.run(Unknown Source) > > > > > > org.apache.flink.client.program.ProgramAbortException: > > > java.lang.RuntimeException: Python process exits with code: 1 > > > at > > > org.apache.flink.client.python.PythonDriver.main(PythonDriver.java:134) > > > at > > > java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native > > > Method) > > > at > > > java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown > > > Source) > > > at > > > > > > java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown > > > Source) > > > at java.base/java.lang.reflect.Method.invoke(Unknown Source) > > > at > > > > > > org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:355) > > > at > > > > > > org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:222) > > > at > > > > org.apache.flink.client.ClientUtils.executeProgram(ClientUtils.java:108) > > > at > > > > > > org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:1026) > > > at > > > org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:247) > > > at > > > > > > org.apache.flink.client.cli.CliFrontend.parseAndRun(CliFrontend.java:1270) > > > at > > > > > > org.apache.flink.client.cli.CliFrontend.lambda$mainInternal$10(CliFrontend.java:1367) > > > at > > > > > > org.apache.flink.runtime.security.contexts.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:28) > > > at > > > > > > org.apache.flink.client.cli.CliFrontend.mainInternal(CliFrontend.java:1367) > > > at > > > org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1335) > > > Caused by: java.lang.RuntimeException: Python process exits with code: > 1 > > > at > > > org.apache.flink.client.python.PythonDriver.main(PythonDriver.java:124) > > > ... 14 more > > > ``` > > > > > >
