@Override
      public void write(Writable r) throws IOException {
        outWriter.append(r);
      }
create the final out file.

@param jc
         the job configuration file
@param finalOutPath
         the final output file to be created
@param valueClass
         the value class used for create
@param isCompressed
         whether the content is compressed or not
@param tableProperties
         the tableInfo of this file's corresponding table
@param progress
         progress used for status report
@throws IOException
ql/src/java/org/apache/hadoop/hive/ql/io/RCFileOutputFormat.java