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Gurchet Singh 11Gurchet Singh 11 

I am using data loader bulk api to upload csv file,At the time of upload if any record is going to currupt or not uploading then i want to generate an error massage on console

ShashankShashank (Salesforce Developers) 
I'm afraid this is not possible through the data loader. You may want to try using the command line data loader: https://developer.salesforce.com/page/Using_Data_Loader_from_the_command_line