フリー問題

問題文

The topic keeps the newest value per key, and the team writes a corrected value. Minutes later a reader still returns the old value. Which description is correct?

選択肢

1. The cleanup never touches the current segment of the log, and expecting the old value to vanish at the writing moment would assume the timing that cleanup does not promise in this configuration.
2. The cleanup never touches the current segment of the log, and expecting the old value to vanish at the following moment would assume the timing that cleanup does not promise in this configuration.
3. The cleanup never touches the finished segment of the log, and expecting the old value to vanish at the writing moment would assume the timing that cleanup does not promise in this configuration.
4. The cleanup never touches the finished segment of the log, and expecting the old value to vanish at the following moment would assume the timing that cleanup does not promise in this configuration.