@Override
  public void injectCaches(
      FileMetadataCache metadataCache, DataCache dataCache, Configuration cacheConf) {
    this.metadataCache = metadataCache;
    this.dataCache = dataCache;
    this.cacheConf = cacheConf;
  }
Vectorized input format for Parquet files
ql/src/java/org/apache/hadoop/hive/ql/io/parquet/VectorizedParquetInputFormat.java