flink + Kafka + JSON

Question

I'm trying to test a Flink program to read a JSON data that came from Kafka using this JSONKeyValueDeserializationSchema class. However my Intellij is not finding this class. I suspect that some Maven dependency is missing or I'm using the wrong ones.

My pom.xml

    <dependencies>
    <dependency>
        <groupId>org.apache.flink</groupId>
        <artifactId>flink-java_2.11</artifactId>
        <version>0.10.2</version>
    </dependency>

    <dependency>
        <groupId>org.apache.flink</groupId>
        <artifactId>flink-streaming-java_2.11</artifactId>
        <version>1.1.1</version>
    </dependency>

    <dependency>
        <groupId>org.apache.flink</groupId>
        <artifactId>flink-clients_2.11</artifactId>
        <version>1.1.1</version>
    </dependency>

    <dependency>
        <groupId>org.apache.flink</groupId>
        <artifactId>flink-connector-kafka-0.9_2.11</artifactId>
        <version>1.0.0</version>
    </dependency>

</dependencies>

The image bellow shows my Intellij complaining.

What am I doing wrong?

Thanks

Answer 1

You need to use the same Flink version across all your dependencies. Using this dependency section should fix the problems

<dependencies>
<dependency>
    <groupId>org.apache.flink</groupId>
    <artifactId>flink-java</artifactId>
    <version>1.1.1</version>
</dependency>

<dependency>
    <groupId>org.apache.flink</groupId>
    <artifactId>flink-streaming-java_2.11</artifactId>
    <version>1.1.1</version>
</dependency>

<dependency>
    <groupId>org.apache.flink</groupId>
    <artifactId>flink-clients_2.11</artifactId>
    <version>1.1.1</version>
</dependency>

<dependency>
    <groupId>org.apache.flink</groupId>
    <artifactId>flink-connector-kafka-0.9_2.11</artifactId>
    <version>1.1.1</version>
</dependency>

</dependencies>