Fluent Bit OTLP logs: How to send whole JSON record as logRecord.attributes?

[Akhilesh1004]

Hi,

I’m using Fluent Bit v4.2.0 with the opentelemetry output plugin, and I want to send logs to an OTLP HTTP collector such that all fields in the input record appear under logRecord.attributes, not inside logRecord.body.

Fluent Bit configuration:

[SERVICE]
    Flush        1
    Daemon       off
    Log_Level    info
    Parsers_File /fluent-bit/etc/parsers.conf

[INPUT]
    Name        tail
    Path        /var/log/nginx/access.log
    Tag         nginx.access
    Parser      nginx_sa
    Refresh_Interval 1

[FILTER]
    Name modify
    Match *

    Rename uri         sa.uri
    Rename host        sa.host
    Rename method      sa.method
    Rename user_agent  sa.user_agent
    Rename status      sa.status

[OUTPUT]
    Name   opentelemetry
    Match  *
    Host   otel
    Port   4318
    logs_uri /v1/logs
    tls    Off
    logs_body_key_attributes true

Even with logs_body_key_attributes true, the plugin never writes attributes
How can I configure Fluent Bit v4.2.0 so that ALL record fields are emitted as OTLP logRecord.attributes?
Is this use-case supported by the current opentelemetry output plugin, or is this a limitation / bug?