- All Implemented Interfaces:
- IMROutput2
public class HBaseMROutput2Transition
extends Object
implements IMROutput2
This "Transition" impl generates cuboid files and then convert to HFile.
The additional step slows down build process, but the gains is merge
can read from HDFS instead of over HBase region server. See KYLIN-1007.
This is transitional because finally we want to merge from HTable snapshot.
However multiple snapshots as MR input is only supported by HBase 1.x.
Before most users upgrade to latest HBase, they can only use this transitional
cuboid file solution.