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Posted to user@beam.apache.org by 基勇 <25...@qq.com> on 2017/06/12 15:24:32 UTC
回复： Input/Output data to kafka exception
Yes!
I build the jar file by command "mvn clean install -DskipTests", and then execute it through the "mvn exec:java " command!
------------------ 原始邮件 ------------------
发件人: "Aljoscha Krettek";<al...@apache.org>;
发送时间: 2017年6月12日(星期一) 下午5:42
收件人: "user"<us...@beam.apache.org>;
主题: Re: Input/Output data to kafka exception
Hi,
How are you bundling your program for execution? Are you, for example, building a fat-jar using Maven? How are you executing the program? Using bin/flink or by executing the program using mvn exec? Also, which Beam/Flink versions are you using?
Best,
Aljoscha
On 12. Jun 2017, at 11:28, 基勇 <25...@qq.com> wrote:
Hi, I used beam API to write code to read Kafka data and run with Flink, but run to throw the following exception:
Caused by: org.apache.flink.streaming.runtime.tasks.StreamTaskException: Cannot load user class: org.apache.beam.runners.flink.translation.wrappers.streaming.io.UnboundedSourceWrapper
ClassLoader info: URL ClassLoader:
file: '/var/folders/vq/887txtm92w508tj7gknjpflc0000gp/T/blobStore-78ed2c9c-03e5-438b-b2ec-514ac394eb11/cache/blob_7123d3372a6822ba044c5ea153ee6801cd5377ff' (valid JAR)
Class not resolvable through given classloader.
at org.apache.flink.streaming.api.graph.StreamConfig.getStreamOperator(StreamConfig.java:210)
at org.apache.flink.streaming.runtime.tasks.OperatorChain.<init>(OperatorChain.java:81)
at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:231)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:665)
at java.lang.Thread.run(Thread.java:745)
code:
KafkaOptions options = PipelineOptionsFactory.fromArgs(args).withValidation().as(KafkaOptions.class);
options.setJobName("KafkaExample - WindowSize: " + options.getWindowSize() + " seconds");
options.setStreaming(true);
options.setCheckpointingInterval(1000L);
options.setNumberOfExecutionRetries(5);
options.setExecutionRetryDelay(3000L);
options.setRunner(FlinkRunner.class);
Pipeline pipeline = Pipeline.create(options);
pipeline.apply(KafkaIO.<String, String>read()
.withBootstrapServers("localhost:9092")
.withTopic(KAFKA_TOPIC) // use withTopics(List<String>) to read from multiple topics.
.withKeyDeserializer(StringDeserializer.class)
.withValueDeserializer(StringDeserializer.class)
.withoutMetadata() // PCollection<KV<String, String>>
).apply(Values.<String> create());
// .apply(KafkaIO.<Void, String>write()
// .withBootstrapServers("localhost:9092")
// .withTopic(KAFKA_OUTPUT_TOPIC)
// .withValueSerializer(StringSerializer.class)
// .values());
pipeline.run();//.waitUntilFinish();
How to fix it ?
Thank you！
回复： Input/Output data to kafka exception
Posted by 基勇 <25...@qq.com>.
@Aljoscha Krettek
The execution command is :
mvn exec:java -Dexec.mainClass=com.exmind.beam.App \
-Pflink-runner \
-Dexec.args="--runner=FlinkRunner \
--flinkMaster=localhost:6123 \
--filesToStage=target/com.exmind.beam-0.0.1-SNAPSHOT.jar"
------------------ 原始邮件 ------------------
发件人: "真心の傻子楓";<25...@qq.com>;
发送时间: 2017年6月12日(星期一) 晚上11:24
收件人: "user"<us...@beam.apache.org>;
主题: 回复： Input/Output data to kafka exception
Yes!
I build the jar file by command "mvn clean install -DskipTests", and then execute it through the "mvn exec:java " command!
------------------ 原始邮件 ------------------
发件人: "Aljoscha Krettek";<al...@apache.org>;
发送时间: 2017年6月12日(星期一) 下午5:42
收件人: "user"<us...@beam.apache.org>;
主题: Re: Input/Output data to kafka exception
Hi,
How are you bundling your program for execution? Are you, for example, building a fat-jar using Maven? How are you executing the program? Using bin/flink or by executing the program using mvn exec? Also, which Beam/Flink versions are you using?
Best,
Aljoscha
On 12. Jun 2017, at 11:28, 基勇 <25...@qq.com> wrote:
Hi, I used beam API to write code to read Kafka data and run with Flink, but run to throw the following exception:
Caused by: org.apache.flink.streaming.runtime.tasks.StreamTaskException: Cannot load user class: org.apache.beam.runners.flink.translation.wrappers.streaming.io.UnboundedSourceWrapper
ClassLoader info: URL ClassLoader:
file: '/var/folders/vq/887txtm92w508tj7gknjpflc0000gp/T/blobStore-78ed2c9c-03e5-438b-b2ec-514ac394eb11/cache/blob_7123d3372a6822ba044c5ea153ee6801cd5377ff' (valid JAR)
Class not resolvable through given classloader.
at org.apache.flink.streaming.api.graph.StreamConfig.getStreamOperator(StreamConfig.java:210)
at org.apache.flink.streaming.runtime.tasks.OperatorChain.<init>(OperatorChain.java:81)
at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:231)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:665)
at java.lang.Thread.run(Thread.java:745)
code:
KafkaOptions options = PipelineOptionsFactory.fromArgs(args).withValidation().as(KafkaOptions.class);
options.setJobName("KafkaExample - WindowSize: " + options.getWindowSize() + " seconds");
options.setStreaming(true);
options.setCheckpointingInterval(1000L);
options.setNumberOfExecutionRetries(5);
options.setExecutionRetryDelay(3000L);
options.setRunner(FlinkRunner.class);
Pipeline pipeline = Pipeline.create(options);
pipeline.apply(KafkaIO.<String, String>read()
.withBootstrapServers("localhost:9092")
.withTopic(KAFKA_TOPIC) // use withTopics(List<String>) to read from multiple topics.
.withKeyDeserializer(StringDeserializer.class)
.withValueDeserializer(StringDeserializer.class)
.withoutMetadata() // PCollection<KV<String, String>>
).apply(Values.<String> create());
// .apply(KafkaIO.<Void, String>write()
// .withBootstrapServers("localhost:9092")
// .withTopic(KAFKA_OUTPUT_TOPIC)
// .withValueSerializer(StringSerializer.class)
// .values());
pipeline.run();//.waitUntilFinish();
How to fix it ?
Thank you！