**1. OpenTelemetry Configuration**

Create the configuration file `otel_trace.yml` as follows:

receivers:

otlp: # OTLP protocol to receive data from OpenTelemetry Java Agent

protocols:

grpc:

endpoint: 0.0.0.0:4317

http:

endpoint: 0.0.0.0:4318

processors:

batch:

send_batch_size: 100000 # Number of traces per batch (recommended batch size: 100MB–1GB)

timeout: 10s

exporters:

doris:

endpoint: http://localhost:8030 # FE HTTP address

database: doris_db_name

username: doris_username

password: doris_password

table:

traces: doris_table_name

create_schema: true # Auto-create schema (if false, tables must be created manually)

mysql_endpoint: localhost:9030 # FE MySQL address

history_days: 10

create_history_days: 10

timezone: Asia/Shanghai

timeout: 60s # HTTP Stream Load client timeout

log_response: true

sending_queue:

enabled: true

num_consumers: 20

queue_size: 1000

retry_on_failure:

enabled: true

initial_interval: 5s

max_interval: 30s

headers:

load_to_single_tablet: "true"

service:

pipelines:

traces:

receivers: [otlp]

processors: [batch]

exporters: [doris]

**3. Application Integration with OpenTelemetry SDK**

Here we demonstrate integration using a Spring Boot example application (from the official [demo](https://docs.spring.io/spring-boot/tutorial/first-application/index.html)), which returns "Hello World!" for the "/" endpoint.

1. Download the [OpenTelemetry Java Agent](https://github.com/open-telemetry/opentelemetry-java-instrumentation/releases).

- Advantage: No code changes required for existing applications.

- For other languages/integration methods, see OpenTelemetry docs:

- [Language APIs & SDKs](https://opentelemetry.io/docs/languages/)

- [Zero-code Instrumentation](https://opentelemetry.io/docs/zero-code/)

2. Before starting the application, set these environment variables (no code modification needed):

export JAVA_TOOL_OPTIONS="${JAVA_TOOL_OPTIONS} -javaagent:/your/path/to/opentelemetry-javaagent.jar" # Path to OpenTelemetry Java Agent

export OTEL_JAVAAGENT_LOGGING="none" # Disable OTEL logs to avoid interference with application logs

export OTEL_SERVICE_NAME="myproject"

export OTEL_TRACES_EXPORTER="otlp" # Use OTLP protocol to send trace data

export OTEL_EXPORTER_OTLP_ENDPOINT="http://localhost:4317" # OpenTelemetry Collector address

java -jar myproject-0.0.1-SNAPSHOT.jar

"title": "Fluent Bit Doris Output Plugin",