public LlapDaemonProtocolProtos.CacheEntryList fetchCachedContentInfo() {
    List<LlapCacheableBuffer> buffers = cachePolicy.getHotBuffers();
    List<LlapDaemonProtocolProtos.CacheEntry> entries = encodeAndConvertHotBuffers(buffers);
    return LlapDaemonProtocolProtos.CacheEntryList.newBuilder().addAllEntries(entries).build();
  }
Internal helper class for extracting the metadata of the cache content and loading data into the cache
based on the provided metadata.
llap-server/src/java/org/apache/hadoop/hive/llap/io/api/impl/LlapCacheMetadataSerializer.java