public HCatRecord getWritable() throws HCatException {
    DefaultHCatRecord d = new DefaultHCatRecord();
    d.copy(this);
    return d;
  }
Convert this LazyHCatRecord to a DefaultHCatRecord.  This is required
before you can write out a record via write.
@return an HCatRecord that can be serialized
@throws HCatException
hcatalog/core/src/main/java/org/apache/hive/hcatalog/data/LazyHCatRecord.java