Sqoop job limiting number of rows

[#1]

Hi

I have a 7 node cluster on RHCP7.1. I have a sqoop job that is trying to import data from an Oracle table into Hive. It is a single table and I am using one partition that has 40 billlion rows in it. the job has 10 mappers and is split by on an ID column that is an Integer. There is an index on that ID column in Oracle

Now the problem is, the mappers that have greater than 2 billion rows are completing successfully but the row count in those is much higher. The table below will give you an idea

Mappers	Sqoop	Oracle
m0	1709027700	1709027700
m1	340656511	340656511
m2	2147483000	3431813617
m3	2147483000	4649556868
m4	2147483000	4567876345
m5	2147483000	8156384917
m6	2147483000	7844967352
m7	2147483000	4153074965
m8	2147483000	2650539503
m9	1454645905	1454645905

What could it be? I read somewhere that this could be a cluster configuration issue. Someone else suggested this could be a limitation of the driver. Any pointers, anyone?

[#2]

As a work around, we are now running smaller batches that are running successfully. I would, however, like to get to thee bottom of this as we have much larger tables to be ingested