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 Fri, 04 Mar 2016 18:44:17 GMT
Hi!

You actually don't need an extra Akka or Scala dependency.

My suspicion is that you have still some incorrect artifact in the
dependencies. Good thing is that these problems disappear when you can
reference a stable release.

Is it possible for you to share the complete dependency section of your
project?

Thanks,
Stephan


On Fri, Mar 4, 2016 at 7:34 PM, Madhire, Naveen <
Naveen.Madhire@capitalone.com> wrote:

> Thanks Stephan. I am using the new dependencies from the 1.0.0 release
> candidate.
>
> Now, my application is failing with the below error,
>
> *java.lang.NoClassDefFoundError: scala/concurrent/ExecutionContext*
>
> *The error is here,*
>
>
> https://github.com/apache/flink/blob/b54499b1cf6d14d01e448ea9ce8edabaaba83929/flink-streaming-java/src/main/java/org/apache/flink/streaming/api/environment/LocalStreamEnvironment.java#L104
>
> Do I need to include any specific Scala or Akka dependency?
>
>
> Thanks,
> Naveen
>
>
> From: <ewenstephan@gmail.com> on behalf of Stephan Ewen <sewen@apache.org>
> Reply-To: "user@flink.apache.org" <user@flink.apache.org>
> Date: Thursday, March 3, 2016 at 3:49 PM
> To: "user@flink.apache.org" <user@flink.apache.org>
> Subject: Re: java.lang.NoClassDefFoundError for Keys Class
>
> 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 You are using some outdated dependencies.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.
>>
>
>
> ------------------------------
>
> 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