线程“ main”中的异常java.lang.NoClassDefFoundError：com / twitter / chill / KryoBase [英] Exception in thread "main" java.lang.NoClassDefFoundError: com/twitter/chill/KryoBase

问题描述

我正在用javas编写一个简单的spark-cassandra程序，带有datastax cassandra，但低于异常

I am writing a simple spark-cassandra program in java with datastax cassandra but getting below exception

线程 main java中的异常.lang.NoClassDefFoundError：
com / twitter / chill / KryoBase原因：
java.lang.ClassNotFoundException：com.twitter.chill.KryoBase

Exception in thread "main" java.lang.NoClassDefFoundError: com/twitter/chill/KryoBase Caused by: java.lang.ClassNotFoundException: com.twitter.chill.KryoBase

pom.xml

 <dependency>
        <groupId>com.datastax.dse</groupId>
        <artifactId>dse-spark-dependencies</artifactId>
        <version>5.1.1</version>
        <exclusions>
            <exclusion>
                <groupId>com.datastax.dse</groupId>
                <artifactId>dse-java-driver-core</artifactId>
            </exclusion>
            <exclusion>
                <groupId>org.apache.solr</groupId>
                <artifactId>solr-solrj</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

App.java

 SparkConf conf = new SparkConf().setMaster("local").setAppName("SparkJavaFirst")
                    .set("spark.cassandra.connection.host", "localhost");     
JavaSparkContext sc = new JavaSparkContext(conf);  
JavaRDD<CassandraRow> cassandraJavaRDD =  CassandraJavaUtil.javaFunctions(sc).
                    cassandraTable("my_keyspace","my_table" ).
                    select("my_column");   

程序在 JavaSparkContext sc = new JavaSparkContext（conf）;失败

任何帮助将不胜感激。

Any help will be appreciated.

推荐答案

此问题已解决，因为我删除了

This issue got resolved as I removed the exclusion of

 <groupId>com.datastax.dse</groupId>  
  <artifactId>dse-java-driver-core</artifactId>

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