Hi, I am a new learner to MapReduce framework and the Hadoop implementation. Currently I am trying to rewrite a application to utilize the infrastructure, However the application need to access the database, which is not clustered, very frequently, and it seems not to be very suitable to fit in the MapReduce framework, since one advantage that MapReduce provides is to improve data locality by distributed file system. Is there any practical way to migrate existing applications which is using non-distributed database to the MapReduce framework or to use Hadoop?
Thank you, Ming Yang
