deepseek-ai/deepseek-harness · error

${this.backend.name}: session "${session.id}" retirement fai

Error message

${this.backend.name}: session "${session.id}" retirement failed: ${String(error)}

What it means

Error "${this.backend.name}: session "${session.id}" retirement failed: ${String(error)}" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/session/session-persistence/src/coordinator.ts:1149

    // Session disposal is observe-only, so retirement contains its own failure.
    ctx.on('session/disposed', (session) => { this.retire(session) })

    // HMR: a hot reload does not replay session/created, so seed existing live
    // sessions (mirrors dsh-invariants).
    for (const session of ctx.sessions.list()) void this.initFor(session)
  }

  /** Start and observe one disposed session's final drain. */
  private retire(session: Session): void {
    if (!this.live.has(session)) return
    const retirement = this.retireCore(session)
    this.retirements.set(session.id, retirement)
    const forget = (): void => {
      if (this.retirements.get(session.id) === retirement) this.retirements.delete(session.id)
    }
    void retirement.then(forget, forget)
    void retirement.catch((error: unknown) => {
      this.ctx.logger.warn(`${this.backend.name}: session "${session.id}" retirement failed: ${String(error)}`)
    })
  }

  /** Drain and release state owned by one exact disposed Session lifecycle. */
  private async retireCore(session: Session): Promise<void> {
    await this.flush(session)
    const id = session.header.id
    await this.serialize(id, () => {
      this.live.delete(session)
      if (this.states.get(id)?.owner === session) this.states.delete(id)
    })
  }

  /** Return the one lifecycle controller for a live session, creating it if needed. */
  private initFor(session: Session): LiveSessionState {
    const existing = this.live.get(session)
    if (existing) return existing
    const reservation = this.preparations.reservationFor(session)

View on GitHub (pinned to b150a551b8)

Solutions

1. Check the named backend's health and storage, then retry session retirement.

When it happens

Trigger: Thrown at packages/session/session-persistence/src/coordinator.ts:1149 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/d5f814861a7e2f3a. Report an issue: GitHub.