Spark-cassandra-connector-java和Spark SQL DataFrame apis中使用Spark 1.5.1,筛选出长度小于或大于给定长度的字符串列的最佳方法是什么? 我试图做这样的事情 DataFrame df = context.sql("select key from mytable where key is not null")
DataFrame fdf
我尝试连接到SAP使用SAP连接器3.0,但给我这样的错误: {
SAP.Middleware.Connector.RfcCommunicationException:
LOCATION CPIC (TCP/IP) on local host with Unicode
ERROR partner 'mysapserveraddress:3350' not reached
TIME Mo