Hi,

first thanks for this awesome software. But I have some trouble and I don't know how to proceed. First I try to find out what else I could provide for this report to be a good bug report.

First, I use the latest version (v1.14.0) from openSUSE build Service. I know, I should compile it by my self to avoid any other causes for this behavior. But for now I still use this package from there

https://github.com/taosdata/TDengine/blob/develop/tests/script/sh/abs_max.c

in function abs_max.c , the datatype of output is error when the input is bigint ,but output is int , and lib function abs() only can support int32_t as input!

Relevant telegraf.conf:

[[outputs.graylog]]
  ## UDP endpoint for your graylog instances.
  servers = ["127.0.0.1:12201"]

Expected behavior:

Input plugin name field (e.g. "name":"log_tail") should be sent with _ prefix. Regarding Gelf specification (https://docs.graylog.org/en/4.1/pages/gelf.html#gelf-payload-specification), all non standard fields should always