deepseek-ai/deepseek-harness · error · Error

job ${job.id} belongs to another session

Error message

job ${job.id} belongs to another session

What it means

Error "job ${job.id} belongs to another session" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/jobs/jobs-local/src/index.ts:358

    const scope = owner === undefined ? undefined : scopeOf(owner.ctx)
    for (const layer of this.layers.chainLayers(scope)) yield* layer.listeners.values()
  }

  /** Look up a job or fail loud. */
  private expect(id: JobId): TrackedTask {
    const job = this.store.get(id)
    if (job === undefined) throw new Error(`unknown job ${id}`)
    return job
  }

  /**
   * The isolation fence: a job with an owner is reachable only by callers
   * whose session id matches (`!== undefined` semantics — an unowned job is
   * open, and a no-agent caller can never match an owned one).
   */
  private assertAccess(job: TrackedTask, caller?: Agent): void {
    if (job.owner !== undefined && job.owner.id !== caller?.id) {
      throw new Error(`job ${job.id} belongs to another session`)
    }
  }

  /** Project a fresh read-only snapshot from the mutable record. */
  private snapshot(job: TrackedTask): JobSnapshot {
    const ownerSession = job.owner?.id
    return {
      id: job.id,
      kind: job.kind,
      label: job.label,
      ...job.outputLimitBytes !== undefined ? { outputLimitBytes: job.outputLimitBytes } : {},
      ...ownerSession !== undefined ? { ownerSession } : {},
      status: job.status,
      ...job.detail !== undefined ? { detail: job.detail } : {},
      startedAt: job.startedAt,
      ...job.finishedAt !== undefined ? { finishedAt: job.finishedAt } : {},
      reported: job.reported,
    }

View on GitHub (pinned to b150a551b8)

Solutions

1. Query or control the job only from the session that started it.

When it happens

Trigger: Thrown at packages/jobs/jobs-local/src/index.ts:358 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of deepseek-ai/deepseek-harness@b150a551b8 (2026-08-24). Data as JSON: /api/errors/4bab9f45ebab4189. Report an issue: GitHub.