auto parse json data failed by source type configuration in splunk8

bigq — Mon, 26 Oct 2020 14:29:45 GMT

case:

transfer data as json format from splunk 6.x to splunk 8 or splunk8.1,failed,

did not parse the json format success by the following set up:

but i can do work well from splunk6.x to splunk 7, so is this a splunk 8 bug? or does there has some workaround solution?

topic auto parse json data failed by source type configuration in splunk8 in Getting Data In