If you don't add any member fields, then no, I don't think you need to change anything. - Aaron
On Wed, Jun 3, 2009 at 4:11 PM, dealmaker <vin...@gmail.com> wrote: > > I have the following as my type of my "value" object. Do I need to > implement > readfields and write functions? > > private static class StringArrayWritable extends ArrayWritable { > private StringArrayWritable (String [] aSString) { > super (aSString); > } > } > > > Aaron Kimball-3 wrote: > > > > If you can use an existing serializeable type to hold that field (e.g., > if > > it's an integer, then use IntWritable) then you can just get away with > > that. > > If you are specifying your own class for a key or value class, then yes, > > the > > class must implement readFields() and write(). > > > > There's no concept of introspection or other "magic" to determine how to > > serialize types by decomposing them into more primitive types - you must > > manually insert the logic for this in every class you use. > > > > - Aaron > > > > On Wed, Jun 3, 2009 at 2:41 PM, dealmaker <vin...@gmail.com> wrote: > > > >> > >> Hi, > >> I have only one field for the record. I wonder if I even need to > define > >> a > >> member variable in class Record. Do I even need to implement readfields > >> and > >> write functions if I have only one field? Can I just use the "value" > >> object > >> directly instead of a member variable of value object? > >> Thanks. > >> -- > >> View this message in context: > >> > http://www.nabble.com/Do-I-need-to-implement-Readfields-and-Write-Functions-If-I-have-Only-One-Field--tp23860009p23860009.html > >> Sent from the Hadoop core-user mailing list archive at Nabble.com. > >> > >> > > > > > > -- > View this message in context: > http://www.nabble.com/Do-I-need-to-implement-Readfields-and-Write-Functions-If-I-have-Only-One-Field--tp23860009p23861181.html > Sent from the Hadoop core-user mailing list archive at Nabble.com. > >