RCFile

<p>Within <a href="/facts/Database_management_systems/VYcpkevb">database management systems</a>, the record columnar file or RCFile is a data placement structure that determines how to store <a href="/facts/Table_(database)/5INvK1Vd">relational tables</a> on <a href="/facts/Computer_clusters/mT7S1BcX">computer clusters</a>. It is designed for systems using the <a href="/facts/MapReduce/KbfxJ5vV">MapReduce</a> framework. The RCFile structure includes a data storage format, data compression approach, and optimization techniques for data reading. It is able to meet all the four requirements of data placement: (1) fast data loading, (2) fast query processing, (3) highly efficient storage space utilization, and (4) a strong adaptivity to dynamic data access patterns.
</p><p>RCFile is the result of research and collaborative efforts from <a href="/facts/Facebook/0IhXFR6u">Facebook</a>, <a href="/facts/Ohio_State_University/jfSr6u6u">The Ohio State University</a>, and the Institute of Computing Technology at the <a href="/facts/Chinese_Academy_of_Sciences/zzHb3yVm">Chinese Academy of Sciences</a>.
</p>

RCFile open-in-new

RCFile