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Resume History

The History tab shows prior execution cycles for resumed workflow runs. It appears on the run detail page when the run was submitted with -resume and has recorded history.

What is Resume?

When a Nextflow run fails or is interrupted, restarting with -resume reuses cached results from completed tasks and only re-executes tasks that failed or were not reached. Each restart creates a new execution cycle.

History Display

Each prior cycle shows:

  • Run summary -- Run name, status, start/complete time, and error message (if any)
  • Failed tasks -- Task name, process, exit code, native ID, and timing
  • Per-process task counts -- Succeeded, failed, cached, aborted, running, submitted, pending

Data Replacement on Resume

Prior Cycle Task Data

When a run is resumed, Tracker replaces prior task, attempt, and output records with data from the current cycle. Only the summary in the History tab is preserved from prior cycles.

Current cycle: Full task, attempt, and output data is available in all views. Prior cycles: Only the summary shown here is displayed in the UI.

Accessing Prior Cycle Data

Prior cycle data is still stored in the database and can be queried via the MCP server. Use an AI agent with the Tracker MCP to analyze prior cycle details.