void deregisterCompactionThreadsTracker() {
    registry.remove(MetricRegistry.name(CompactionManager.class, "CompactionsInProgress"));
    registry.remove(MetricRegistry.name(StorageManager.class, "CompactionThreadsAlive"));
    registry.remove(MetricRegistry.name(StorageManager.class, "CompactionHealth"));
  }
Deregister the Metrics related to the compaction thread.
ambry-store/src/main/java/com/github/ambry/store/StorageManagerMetrics.java