spark-cassandra-connector

问题 I\'m always getting the following error.Can somebody help me please? Exception in thread \"main\" java.lang.NoClassDefFoundError: org/apache/spark/Logging at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:763) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at java.net.URLClassLoader.defineClass(URLClassLoader.java:467) at java.net.URLClassLoader.access$100(URLClassLoader.java:73) at java.net.URLClassLoader$1

问题 I have a Cassandra table that for simplicity looks something like: key: text jsonData: text blobData: blob I can create a basic data frame for this using spark and the spark-cassandra-connector using: val df = sqlContext.read .format(\"org.apache.spark.sql.cassandra\") .options(Map(\"table\" -> \"mytable\", \"keyspace\" -> \"ks1\")) .load() I\'m struggling though to expand the JSON data into its underlying structure. I ultimately want to be able to filter based on the attributes within the