this form maybe met the same problem:
received shard failed for [api-nginx-logs-2016.01.27], node[qIW6bRNhRH-f6c4d4mL0_g], [R], v, s[STARTED], a[id=LLmaqrfqRTSJeHVoBGGUKg], indexUUID [PkwVMa-pR96vk30tXQZChA], message [failed to update mappings], failure [IllegalArgumentException[Mapper for [_uid] conflicts with existing mapping in other types:
[mapper [_uid] cannot be changed from type [_uid] to [string]]]]
if is a bug in 2.1?
warkolm (Mark Walkom) #2
It's not a bug, it's ES stopping you from having bad mappings.
Can you provide more information, what does the data look like?
system (system) #3