Gopal V created HIVE-9933:
-----------------------------

             Summary: HDFS Blockplacement policy for ORC ACID delta files
                 Key: HIVE-9933
                 URL: https://issues.apache.org/jira/browse/HIVE-9933
             Project: Hive
          Issue Type: Improvement
          Components: File Formats
    Affects Versions: 1.2.0
            Reporter: Gopal V


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.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Reply via email to