I'm getting the following error "mapreduce.reduce.class is incompatible
with reduce compatability mode
" when using:
import org.apache.hadoop.mapred.OutputFormat;
and setting the reducer output format as
conf.setClass("mapred.output.format.class", TableOutputFormat.class,
OutputFormat.class);
I could not use the new OutputFormat in mapreduce lib because when I
used
import org.apache.hadoop.mapreduce.OutputFormat;
hadoop complained that TableOutputFormat is not OutputFormat.
After looking at the TableOutputFormat I understand that it extends the
old mapred lib org.apache.hadoop.mapred.OutputFormat and not the new
mapreduce lib. Is there any hidden consequence if I change the code to
the new package? Is that done on purpose or just due to negligence?
Thanks
-Yair
