是否可以编写一个mapreduce程序，该程序从hdfs获取输入并将输出写入mongodb

Question

Hi guys im new to mongodb and hadoop.i want to write a mapreduce program that reads input from hdfs and writes its output mongodb.i also tried mongo-hadoop connector but while using connector i dont know how to write mapreduce that takes input from hdfs .i am only able to write mapreduce that uses mongodb for both input and output.it would be more help full if i was able to get sample codes or any reference

-Thankyou

Answer 1

You can use MongoDB as both a source and destination for data. So yes, you can load data from HDFS into Mongo using the MongoDB Hadoop connector http://docs.mongodb.org/ecosystem/tools/hadoop/

You can find examples in their github repository https://github.com/mongodb/mongo-hadoop/tree/master/examples