-Re: MulitpleOutputs outputs just one line
Harsh J 2013-01-24, 07:36
As instructed on
do you also make sure to call the mos.close() function at the end of
Mapper (in its cleanup stage)?
On Thu, Jan 24, 2013 at 12:40 PM, Barak Yaish <[EMAIL PROTECTED]> wrote:
> I'm trying to utilize MulitpleOutputs ( hadoop 1.0.4 ) to produce multiple
> files based on some policy. In the job i set:
> MultipleOutputs.addNamedOutput( job, "rejected", TextOutputFormat.class,
> Text.class, NullWritable.class );
> And at the mapper:
> private MultipleOutputs<Text, Writable> mos;
> setup(): mos = new MultipleOutputs( context );
> map(): if( somecond )
> context.write( new Text( key ), NullWritable.get() );
> logger.info( "Going to write to mos: " + key );
> mos.write( new Text( key ), NullWritable.get(), "/tmp"
> The problem I'm facing is that if multiple mappers running that code, I can
> see at the logs that the mos.write() is being invoked, but only one line is
> printed to the output file under /tmp. Is there some config I missed?