void markCompactionStart(boolean incrementUniqueCompactionsCount, boolean isFullRange) {
    if (incrementUniqueCompactionsCount) {
      compactionCount.inc();
    }
    compactionsInProgress.incrementAndGet();
    if (isFullRange) {
      fullRangeCompactionsInProgress.incrementAndGet();
    }
  }
Marks the beginning of a compaction.
@param incrementUniqueCompactionsCount {@code true} if this is a new compaction and not the resume of a suspended
                                                   one. {@code false otherwise}
ambry-store/src/main/java/com/github/ambry/store/StorageManagerMetrics.java