# Read run logs and metrics as rows

Control / log

A variant of [Log and annotate a run](https://meridian.online/operations/log-and-annotate-a-run).

Return the run's log records, step timings, row counts or engine statistics as a table that later steps can query.

Page: <https://meridian.online/operations/log-and-annotate-a-run/read-run-logs-as-rows>

## Status

Not built yet.

arcform does not do this yet; it would live in how a Protocol runs. [Its place on the roadmap](https://meridian.online/roadmap#log-and-annotate-a-run)

## What other tools call it

Meridian's classification; an independent blind rating agreed on 95.7% of 324 rows (variant, version 3).

- Apache DataFusion: [`list_files_cache`](https://datafusion.apache.org/user-guide/cli/functions.html) (read 2026-09-27)
- Apache DataFusion: [`metadata_cache`](https://datafusion.apache.org/user-guide/cli/functions.html) (read 2026-09-27)
- Apache DataFusion: [`statistics_cache`](https://datafusion.apache.org/user-guide/cli/functions.html) (read 2026-09-27)
- DuckDB: `duckdb_log_contexts` (read 2026-09-27)
- DuckDB: `duckdb_logs` (read 2026-09-27)
- DuckDB: `duckdb_logs_parsed` (read 2026-09-27)
- Duckle: [`Run Events`](https://github.com/slothflowlabs/duckle/blob/f85f8960edfb6efbf4cb89d58a7b32e16df0e867/frontend/src/workflow-ui/palette-data.ts) (read 2026-09-25)
- Apache Hop: [`Execution information`](https://hop.apache.org/manual/latest/pipeline/transforms/execinfo.html) (read 2026-09-27)
- Apache Hop: [`Neo4j Get Logging Info`](https://hop.apache.org/manual/latest/pipeline/transforms/neo4j-getloginfo.html) (read 2026-09-27)
- Apache Hop: [`Output transform metrics`](https://hop.apache.org/manual/next/pipeline/transforms/outputtransformmetrics.html) (read 2026-09-27)
- Apache Hop: [`Pipeline Data Probe`](https://hop.apache.org/manual/latest/pipeline/transforms/pipeline-data-probe.html) (read 2026-09-27)
- Apache Hop: [`Pipeline logging`](https://hop.apache.org/manual/latest/pipeline/transforms/pipeline-logging.html) (read 2026-09-27)
- Apache Hop: [`Server Status`](https://hop.apache.org/manual/latest/pipeline/transforms/serverstatus.html) (read 2026-09-27)
- Apache Hop: [`Workflow logging`](https://hop.apache.org/manual/latest/pipeline/transforms/workflow-logging.html) (read 2026-09-27)
- KNIME Analytics Platform: [`Global Timer Info`](https://api.hub.knime.com/nodes/*GvF1OLhWkWtNIH9-?details=full) (read 2026-09-27)
- KNIME Analytics Platform: [`Timer Info`](https://api.hub.knime.com/nodes/*LPVh862Ydlwk4inj?details=full) (read 2026-09-27)
- Pentaho Data Integration: [`Output steps metrics`](https://docs.pentaho.com/pdia-data-integration/9.3-data-integration/pdi-transformation-steps-reference-overview) (read 2026-09-27)
- RapidMiner Studio: [`Get Jobs (AI Hub)`](https://docs.rapidminer.com/latest/studio/operators/extensions/Admin%20Tools/ai_hub/aihub_get_jobs.html) (read 2026-09-27)
- RapidMiner Studio: [`Get Log (AI Hub)`](https://docs.rapidminer.com/latest/studio/operators/extensions/Admin%20Tools/ai_hub/aihub_get_log.html) (read 2026-09-27)
- RapidMiner Studio: [`Get Log (RTSA)`](https://docs.rapidminer.com/latest/studio/operators/extensions/Admin%20Tools/rtsa/get_log_rtsa.html) (read 2026-09-27)
- RapidMiner Studio: [`Get Logs (RTSA)`](https://docs.rapidminer.com/latest/studio/operators/extensions/Admin%20Tools/rtsa/get_logs_rtsa.html) (read 2026-09-27)
- RapidMiner Studio: [`Get Metrics (AI Hub)`](https://docs.rapidminer.com/latest/studio/operators/extensions/Admin%20Tools/ai_hub/aihub_get_metrics.html) (read 2026-09-27)
- RapidMiner Studio: [`Log to Data`](https://docs.rapidminer.com/latest/studio/operators/utility/logging/log_to_data.html) (read 2026-09-27)
- RapidMiner Studio: [`Log to Weights`](https://docs.rapidminer.com/latest/studio/operators/utility/logging/log_to_weights.html) (read 2026-09-27)
- subtoken: [`subtoken_cache_stats`](https://github.com/meridian-online/subtoken/blob/ceb61bd796b15b4d54ca3bb2db8a74792d67026e/README.md) (read 2026-09-27)
- Talend: [`tAssertCatcher`](https://help.qlik.com/talend/en-US/components/8.0/logs-and-errors/logs-and-errors-component) (read 2026-09-27)
- Talend: [`tFlowMeterCatcher`](https://help.qlik.com/talend/en-US/components/8.0/logs-and-errors/logs-and-errors-component) (read 2026-09-27)
- Talend: [`tLogCatcher`](https://help.qlik.com/talend/en-US/components/8.0/logs-and-errors/logs-and-errors-component) (read 2026-09-27)
- Talend: [`tStatCatcher`](https://help.qlik.com/talend/en-US/components/8.0/logs-and-errors/logs-and-errors-component) (read 2026-09-27)