private void reportCached(LlapCacheableBuffer buffer) {
    long size = buffer.getMemoryUsage();
    TagState state = getTagState(buffer);
    reportCached(state, size);
  }
A wrapper around cache eviction policy that tracks cache contents via tags.
llap-server/src/java/org/apache/hadoop/hive/llap/cache/CacheContentsTracker.java