例如，下面是我的代码：

spark = SparkSession.builder.appName('SparkCassandraApp')\
    .config('spark.cassandra.connection.host', 'xx.xx.xx.xx') \
    .config('spark.cassandra.connection.port', '9042') \
    .config("spark.cassandra.auth.username","username")\
    .config("spark.cassandra.auth.password","password")\
    .getOrCreate()
df = spark.read.format("org.apache.spark.sql.cassandra").option("table","local").option( "keyspace","system").load().select('host_id')
df.show()

获取以下错误：
error executor.executor:第0.0阶段任务0.0中出现异常（tid 0）java.io.ioexception:准备从“system”中选择“host\u id”时出现异常。“local”where token（“key”）<？允许过滤：org/apache/spark/sql/catalyst/package$scalareflectionlock$位于com.datastax.spark.connector.rdd.cassandratablescanrdd.createstatement（cassandratablescanrdd）。scala:323)
我在用
spark版本：2.4.6
scala版本：2.11.12
spark cassendra-连接器spark-cassandra-connector_2.11-2.0.5-yb-2.jar