Thank you Neeraj Sabharwal, yes, this is my fault not to go through the documentation first. i do first check documentations before touching any technology and i got this habbit from oracle. i dont know why in Hortonworks i skip documentations, may be it is new for me and a bit difficult to find the proper documentation... i dont know. but i promise, i will check them from now on. i really appriciate your kind replies and support. thank you so much.
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