Sqoop imported a table successfully to HBase but it is found that the number of rows is fewer than expected. What can be the cause?

Sqoop imported a table successfully to HBase but it is found that the

1.	Sqoop imported a table successfully to HBase but it is found that the number of rows is fewer than expected. What can be the cause?
Answer» Some of the imported records might have null values in all the columns. As Hbase does not allow all null values in a row, those rows get dropped.