OpenTelemetry (OTel) Trace Issue

A recent change inadvertently removed the "OTel GRPC Trace exporter" which is needed for successful exporting of OTel tracing in certain environments. (Pull Request)

Without the exporter, traces are not exported to their target, so the component logs will not contain meaningful trace transaction information.

A single initialization log line is reported, but can easily be missed.

On bare-metal, jtrace initialization errors are routed to a file. By default, they're captured in this file:

/var/lib/HPCCSystems/<component-name>/<mm>_<dd>_<yyyy>_<hr>_<min>_<sec>.stderr

For example:

/var/lib/HPCCSystems/roxie_09/01_13_2026_10_31_55.stderr

00000000 OPR 2025-12-11 20:10:08.318 509299 509299 "Exporter type: OTLP-GRPC"
00000001 OPR 2025-12-11 20:10:08.319 509299 509299 "WARNING: Tracing exporter type not supported: 'OTLP-GRPC’"

To avoid this issue, make sure you are running:

• 10.0.20 or later
• 9.12.66 or later
• 9.14.46 or later

The above versions have reintegrated the missing GRPC Trace exporter and have resolved the issue.

Full list of versions affected (avoid if planning to export tracing via GRPC):

 candidate-10.0.0 .. candidate-10.0.18
 candidate-9.12.0 .. candidate-9.12.64
 candidate-9.14.0 .. candidate-9.14.44