Hi,
On Mon, Sep 19, 2011 at 3:19 PM, Shi Yu <[email protected]> wrote:
>
> I am stuck again in a probably very simple problem. I couldn't generate the
> map output in sequence file format. I always get this error:
> java.io.IOException: wrong key class: org.apache.hadoop.io.Text is not class
> org.apache.hadoop.io.LongWritable
No worries.
> job.setMapOutputKeyClass(Text.class);
> job.setMapOutputValueClass(Text.class);
You are running a map only job, so I think you want:
job.setOutputKeyClass(Text.class);
job.setOutputValueClass(Text.class);
But I also recommend adding @Override on your map method because it's
easy to accidentally not override your superclass method.
@Override
public void map(LongWritable key, Text value, Context context)
throws IOException, InterruptedException{
Brock
