deepseek-ai/deepseek-harness · error

context-overflow compaction failed: ${message}; ${signal.abo

Error message

context-overflow compaction failed: ${message}; ${signal.aborted ? 'cancellation prevents retry' : 'preserving the original request error'}

What it means

Error "context-overflow compaction failed: ${message}; ${signal.aborted ? 'cancellation prevents retry' : 'preserving the original request error'}" thrown in deepseek-ai/deepseek-harness.

Source

Thrown at packages/compaction/compaction-basic/src/index.ts:209

      const generation = agent.session.surface.replaceGeneration
      let result: CompactionResult | null
      try {
        result = await this.compactIfNeeded(agent, 'context-overflow', signal)
      } catch (recoveryError: unknown) {
        const message = recoveryError instanceof Error ? recoveryError.message : String(recoveryError)
        // A model-free prune can land before later summary work fails. That
        // durable reduction is sufficient retry proof; do not discard it just
        // because the optional second phase threw. Cancellation still wins.
        // oxlint-disable-next-line typescript/no-unnecessary-condition -- the signal can abort while recovery is awaited.
        if (!signal.aborted && agent.session.surface.replaceGeneration > generation) {
          ctx.logger.warn(
            `context-overflow compaction failed after durable surface progress: ${message}; `
            + 'retrying from the replacement surface',
          )
          this.overflowRetries.set(agent, retries + 1)
          return { kind: 'retry' }
        }
        ctx.logger.warn(
          // oxlint-disable-next-line typescript/no-unnecessary-condition -- the signal can abort while recovery is awaited.
          `context-overflow compaction failed: ${message}; ${signal.aborted
            ? 'cancellation prevents retry'
            : 'preserving the original request error'}`,
        )
        return next()
      }
      // oxlint-disable-next-line typescript/no-unnecessary-condition -- the signal can abort while compaction is awaited.
      if (signal.aborted
        || agent.session.surface.replaceGeneration <= generation) return next()
      if (result !== null) logResult(result, 'context overflow recovery')
      this.overflowRetries.set(agent, retries + 1)
      return { kind: 'retry' }
    })
  }

  /**
   * Summarize the replayed conversation region through a direct one-shot

View on GitHub (pinned to b150a551b8)

Solutions

1. Reduce the request context size manually or start a new session; check the underlying provider error message.

When it happens

Trigger: Thrown at packages/compaction/compaction-basic/src/index.ts:209 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/72a26e8065ea4e25. Report an issue: GitHub.