public WriterOptions blockPadding(boolean value) {
      super.blockPadding(value);
      return this;
    }
Sets whether the HDFS blocks are padded to prevent stripes from
straddling blocks. Padding improves locality and thus the speed of
reading, but costs space.
ql/src/java/org/apache/hadoop/hive/ql/io/orc/OrcFile.java