public static void injectLlapCaches(InputFormat<WritableComparable, Writable> inputFormat,
      LlapIo<VectorizedRowBatch> llapIo, Configuration conf) {
    LOG.info("Injecting LLAP caches into " + inputFormat.getClass().getCanonicalName());
    conf.setInt("parquet.read.allocation.size", 1024*1024*1024); // Disable buffer splitting for now.
    llapIo.initCacheOnlyInputFormat(inputFormat);
  }
The position of the first byte in the file to process.
ql/src/java/org/apache/hadoop/hive/ql/io/HiveInputFormat.java