flink-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Stephan Ewen <se...@apache.org>
Subject Re: java.lang.NoClassDefFoundError for Keys Class
Date Thu, 03 Mar 2016 21:49:27 GMT
Hi!

You are using some outdated dependencies. Now, all Scala-dependent Flink
artifacts include the Scala Version Suffix (following common conventions)

Please substitute:
  - flink-streaming-java--> flink-streaming-java_2.10
  - flink-clients --> flink-clients_2.10
  - flink-connector-kafka --> flink-connector-kafka-0.8_2.10

That should do it.

FYI:  You can also try to use the latest release candidate, described here:
http://apache-flink-mailing-list-archive.1008284.n3.nabble.com/VOTE-Release-Apache-Flink-1-0-0-RC5-td10628.html

Greetings,
Stephan


On Thu, Mar 3, 2016 at 10:01 PM, Madhire, Naveen <
Naveen.Madhire@capitalone.com> wrote:

>
> Hey All,
>
> I am getting the below error while executing a simple Kafka-Flink
> Application.
>
>
> *java.lang.NoClassDefFoundError: org/apache/flink/api/java/operators/Keys*
>
>
>
>
> Below are the maven dependencies which I included in my application.
>
>
> <dependency>
>    <groupId>org.apache.kafka</groupId>
>    <artifactId>kafka_2.9.1</artifactId>
>    <version>0.8.2.0</version>
> </dependency>
>  <dependency>
>    <groupId>commons-configuration</groupId>
>    <artifactId>commons-configuration</artifactId>
>    <version>1.10</version>
>  </dependency>
>  <dependency>
>    <groupId>org.apache.flink</groupId>
>    <artifactId>flink-connector-kafka</artifactId>
>    <version>1.0-SNAPSHOT</version>
>  </dependency>
>  <dependency>
>    <groupId>org.apache.flink</groupId>
>    <artifactId>flink-java</artifactId>
>    <version>1.0-SNAPSHOT</version>
>  </dependency>
>  <dependency>
>    <groupId>org.apache.flink</groupId>
>    <artifactId>flink-clients</artifactId>
>    <version>1.0-SNAPSHOT</version>
>  </dependency>
>  <dependency>
>    <groupId>org.apache.flink</groupId>
>    <artifactId>flink-streaming-java</artifactId>
>    <version>1.0-SNAPSHOT</version>
>  </dependency>
>  <dependency>
>    <groupId>junit</groupId>
>    <artifactId>junit</artifactId>
>    <version>4.12</version>
>  </dependency>
>
>
>
> I checked the Flink source and couldn’t find the org.apache.flink.api.java.operators.Keys
class.
>
> I found org.apache.flink.api.common.operators.Keys instead. Is there any other Flink
dependency which I am missing?
>
>
>
> Thanks,
>
> Naveen
>
>
>
>
> ------------------------------
>
> 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.
>

Mime
View raw message