I am trying to write from Kafka Source to Hive Target. I am using "com.hortonworks.spark.sql.hive.llap.streaming.HiveStreamingDataSource" format to write data into Hive table. Table is ORC format and fully transnational. I am using HDP 3.1 cluster.
But What i see that for every NULL value of string data type is written as empty in hive table. Is it the bug or is it the expected behavior?