README.md

Example: record and replay OpenTelemetry Protocol data

First, run make otelarrowcol in the top-level directory.

To execute the data recorder, for example, where GOOS=darwin and GOARCH=arm64:

$COLLECTOR --config target.yaml

During this phase, data received is copied through a "loopback" Arrow pipeline that encodes and decodes the data and should second, identical copies of the inputs.

When enough data has been collected to first.traces.json and first.metrics.json, you may stop the target collector.

Note this configuration exercises Arrow in the loopback pipeline, and if Arrow is failing for any reason the sender will receive errors. When this is happening, modify the forwarding exporter to disable Arrow in the recording step, e.g.,:

exporters:
  otelarrow/forward:
    arrow:
      enabled: false

Then, to re-exercise the same data though an Arrow pipeline using data recorded in the first step, run:

$COLLECTOR --config replay.yaml

Note that this example only supports traces and metrics. Logs are not supported in these configurations.