- When using a mongoDB collection as input, add the arguments
-jobconf mongo.input.uri=<input mongo URI>and-inputformat com.mongodb.hadoop.mapred.MongoInputFormat - When using a mongoDB collection as output, add the arguments
-jobconf mongo.output.uri=<input mongo URI>and-outputformat com.mongodb.hadoop.mapred.MongoOutputFormat
Examples:
mongodb://joe:12345@weyland-yutani:27017/analytics.users?readPreference=secondaryAuthenticate as "joe" with the password "12345" and read from only SECONDARY nodes from the "users" collection in the database "analytics".mongodb://joe:12345@weyland-yutani:27017/production.customers?readPreferenceTags=dc:tokyo,type:hadoopAuthenticate "joe" with the password "12345" and read the "users" collection in database "analytics" only on nodes tagged with "dc:tokyo" and "type:hadoop".
参考：
https://github.com/mongodb/mongo-hadoop/wiki/Streaming-Usage
https://github.com/mongodb/mongo-hadoop/wiki/Configuration-Reference
https://docs.mongodb.org/manual/reference/connection-string/