Details
-
Improvement
-
Status: Open
-
Major
-
Resolution: Unresolved
-
1.2.0
-
None
-
None
Description
The ACID implementation triggers locality misses due to the fact that the splits only have locality of the base file at best and offers no idea on the data locality of the delta blocks.
HDFS-2576 offers a preferred location placement policy for HDFS which can be taken advantage of by the ORC Delta writer as hint.