Well Deepika, you came to know about it which is sadly very much prevalent for long time now. This is the sad truth that i find hard to swallow, Rajasthan Jats don't like Haryana, UP ones and hence forth. They don't escape even a single opportunity to degrade each other. They don't have enough mental agility to understand the fact that Jat is Jat be it in UP, Haryana, Rajasthan etc. Jats in UP migrated from Haryana and Punjab and they are as much a jat as any other.
Discrimination actually governs its roots in the slight differences in customs, dialect which are the effect of long exposure to regional customs, but they keep forgetting this and hence downgrade each other with religious determination.
And all this give sound reason for other communities to say-"Ye jat to kabhi ikatthe ho hi nahi sakte, kahin ikatthe ho bhi gaye to aapas me hi lad lad ke mar jayenge", and sadly discrimination is not only the part of uneducated fellas, but few highly educated people too act foolishly in this regard.
But i don't believe in all this and think there is no reason thinking like that as it doesn't have any sound reasoning. But as they say “Prejudice, not being founded on reason, cannot be removed by argument”, this thing cannot be removed by argument as well. People who believe in all this are not going to stop just by an argument.