Sqoop currently do not support splitting data on N(LONG)(VAR)CHAR column types. We‘re however supporting splitting on (LONG)(VAR)CHAR using TextSplitter:
case Types.CHAR:
case Types.VARCHAR:
case Types.LONGVARCHAR:
return new TextSplitter();
原文：http://www.cnblogs.com/dalu610/p/5221515.html