public boolean shouldDropBehindCompaction() {
    return dropBehindCompaction;
  }
Returns whether the DATA blocks of this HFile should be cached on read or not (we always cache
the meta blocks, the INDEX and BLOOM blocks).
@return true if blocks should be cached on read, false if not
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/CacheConfig.java