Yes, I’ve verified the kafka connectivity outside of Beam. I wanted to see how
it works if I read kafka data using Beam.
I am changed the code to use the default direct runner and getting a
compilation error now,
java: cannot find symbol
symbol: method
apply(java.lang.String,org.apache.beam.sdk.transforms.MapElements<org.apache.beam.sdk.values.KV<java.lang.String,java.lang.String>,java.lang.String>)
location: interface org.apache.beam.sdk.values.POutput
Am I missing any other dependency in Pom? Please let me know.
Code:
PipelineOptions options = PipelineOptionsFactory.create();
Pipeline p = Pipeline.create(options);
//Read from Kafka Topic
try {
InputStream props = Resources.getResource("client.properties").openStream();
Properties properties = new Properties();
properties.load(props);
p.apply(KafkaIO.read()
.withTopics(ImmutableList.of("Topic"))
.withKeyCoder(StringUtf8Coder.of())
.withValueCoder(StringUtf8Coder.of())
.updateConsumerProperties((Map) Maps.fromProperties(properties))
.withoutMetadata())
.apply("Transform ", MapElements.via(new SimpleFunction<KV<String,
String>, String>() {
@Override
public String apply(KV<String, String> input) {
return input.getKey() + " " + input.getValue();
}
}))
.apply(TextIO.Write.to("Location"));
}
I’ve the below dependencies included in my pom,
<!-- Apache Beam Dependencies -->
<dependency>
<groupId>org.apache.beam</groupId>
<artifactId>beam-sdks-java-io-kafka</artifactId>
<version>0.4.0</version>
</dependency>
<dependency>
<groupId>org.apache.beam</groupId>
<artifactId>beam-sdks-java-core</artifactId>
<version>0.4.0</version>
</dependency>
<dependency>
<groupId>org.apache.beam</groupId>
<artifactId>beam-runners-direct-java</artifactId>
<version>0.4.0</version>
</dependency>
<dependency>
<groupId>org.apache.beam</groupId>
<artifactId>beam-runners-core-java</artifactId>
<version>0.4.0</version>
</dependency>
<!—Business logic -->
<dependency>
<groupId>org.drools</groupId>
<artifactId>drools-core</artifactId>
<version>6.2.0.Final</version>
</dependency>
Thanks,
Naveen
From: Lukasz Cwik <[email protected]>
Reply-To: "[email protected]" <[email protected]>
Date: Thursday, January 12, 2017 at 10:58 AM
To: "[email protected]" <[email protected]>
Subject: Re: KafkaIO Example
I'm assuming you mean DirectRunner and not DataflowDirectRunner.
On Wed, Jan 11, 2017 at 4:23 PM, Raghu Angadi
<[email protected]<mailto:[email protected]>> wrote:
On Wed, Jan 11, 2017 at 1:56 PM, Madhire, Naveen
<[email protected]<mailto:[email protected]>> wrote:
I can confirm the authorization and authentication to Kafka is behaving
correctly,
Did you confirm this within Beam/KafkIO context or outside? When I last checked
Kafka requires the the credentials file to be available on local filesystem
where the KafkaConsumer runs. All the workers need to have this file. Shipping
these files to workers depends on the runner/execution environment.
Can you try with DataflowDirectRunner? That would be simpler to debug.
Raghu.
________________________________________________________
The information contained in this e-mail is confidential and/or proprietary to
Capital One and/or its affiliates and may only be used solely in performance of
work or services for Capital One. The information transmitted herewith is
intended only for use by the individual or entity to which it is addressed. If
the reader of this message is not the intended recipient, you are hereby
notified that any review, retransmission, dissemination, distribution, copying
or other use of, or taking of any action in reliance upon this information is
strictly prohibited. If you have received this communication in error, please
contact the sender and delete the material from your computer.
