There are unconnected ports between the source and target in the mapping.
The data types of the source and target in the mapping do not match.
You write data to an existing Hive target table that is either partitioned or bucketed.
You run a mapping on an Azure HDInsight cluster that uses WASB to write data to an HDFS complex file target of the Parquet format.
The date or time data type in the Sqoop source is mapped to the timestamp data type in the Hive target.
The Sqoop source contains a decimal column and the target is a complex file.