hadoop mongodb连接器-输出数据不是mongodb，而是hdfs

Question

是否可以从hadoop mongodb插件连接器中读取mongodb数据，使用mapreduce hadoop处理数据，并且在输出结果中不使用hadoop mongodb插件连接器，而将mapreduce hadoop的结果照原样保留在hdfs中？

Answer 1

I think this previous answer on SO answers your question, with a minor change:

Is it possible to read MongoDB data, process it with Hadoop, and output it into a RDBS(MySQL)?

The main difference is that you would set the OutputFormatClass to something like:

job.setOutputFormatClass( SequenceFileOutputFormat.class );

You'll also need to set the output path on HDFS you want to save the data to. See their WordCount example for a full code example, but use the above as the output format instead of MongoOutputFormat.