Acquisition. Big Data architecture has to acquire high
speed data from a variety of sources (web, DBMS(OLTP),
NoSQL, HDFS) and has to deal with diverse access protocols. It
is where a filter could be established to store only data which
could be helpful or “raw” data with a lower degree of uncertainty
[14]. In some applications, the conditions of generation
of data are important, thus it could be interesting for further
analysis to capture these metadata and store them with the
corresponding data [14].