if (block->compact_pages_rewritten_expected == 0) {
            __wt_verbose_debug1(session, WT_VERB_COMPACT_PROGRESS,
              "compacting %s for %" PRIu64 " seconds; reviewed %" PRIu64
              " pages, rewritten %" PRIu64 " pages (%" PRIu64 "MB)",
              block->name, time_diff, block->compact_pages_reviewed, block->compact_pages_rewritten,
              block->compact_bytes_rewritten / WT_MEGABYTE);
            __wt_verbose_debug1(session, WT_VERB_COMPACT,
              "%s: still collecting information for estimating the progress", block->name);
        } else {
            progress = WT_MIN(
              (int)(100 * block->compact_pages_rewritten / block->compact_pages_rewritten_expected),
              100);
            __wt_verbose_debug1(session, WT_VERB_COMPACT_PROGRESS,
              "compacting %s for %" PRIu64 " seconds; reviewed %" PRIu64
              " pages, rewritten %" PRIu64 " pages (%" PRIu64 "MB), approx. %d%% done",
              block->name, time_diff, block->compact_pages_reviewed, block->compact_pages_rewritten,
              block->compact_bytes_rewritten / WT_MEGABYTE, progress);
        }