@Override
  public void getFileMetadataByExpr(List<Long> fileIds, FileMetadataExprType type, byte[] expr,
      ByteBuffer[] metadatas, ByteBuffer[] stripeBitsets, boolean[] eliminated) {
    throw new UnsupportedOperationException();
  }
Get partition's column stats

@return Map of column name and its stats
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/ObjectStore.java