AJAX response cannot return 1 000 000 objects from spring mvc app -


i make request controller in spring mvc , return 1 million of objects (to generate csv file them , make user download it). code works great 500 000 , when increasing size 700 000 or 1 mln of objects - it's not returning error or timeout, goes success() callback, response in null. why can happen ?

       a.$.ajax({          type: "get",         contenttype : "application/json",         url: 'getreport',         datatype : "json",         timeout : 10000000,         success: function (response) {          alert(response);  // null            }


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