The Apache Hadoop software library is a framework that allows for the distributed processing of large data sets across clusters of computers using simple programming models.

learn more… | top users | synonyms

1
vote
0answers
77 views

Improve communication between controller and trackers in a Twitter fetcher tool using RabbitMQ or Apache Flume

I've been working for a time with some researches developing a tool to fetch tweets from Twitter and process them in some way. The first prototype "worked" but became a pain as we used sockets to ...
0
votes
0answers
38 views

Execute shell script as one of the steps on EMR

We are thinking to migrate our Hadoop infrastructure from Data Center to AWS EMR. As some of the tasks / stages in ETL process are dependent e.g. flow is like Map Reduce job will generate data Shell ...
0
votes
0answers
89 views

Best practices for dashboard of near real-time analytics

I’m currently building a dashboard to view some analytics about the data generated by my company's product. We use MySQL as our database. The SQL queries to generate the analytics from the raw live ...
0
votes
0answers
79 views

Map-Reduce sorting: before or after partitioning?

At some point, the (key,value) outputs of the mappers are sorted by key.As I understand, this sorting doesnt take place locally on the node of the mapper.So I can think of two possibilites: 1) does ...