wondering a best approach to update timestamp of logs already indexed into ES.
the new value should be _timestamp = field1.value + field3.value.
@timestamp = August 18th 2019, 11:29:58.271
field1_time = August 17th 2019, 10:49:57.000
field2_value = 10 ->min
need to update @timestamp = field1_time + field2_value
ie; @timestamp = August 17th 2019, 10:49:57.000 + 10
@timestamp = August 17th 2019, 10:59:57.000
thanks in advance