[
https://issues.apache.org/jira/browse/ORC-323?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Ashish Sharma updated ORC-323:
------------------------------
External issue URL: https://issues.apache.org/jira/browse/HIVE-12898
> Predicate push down for nested fields
> -------------------------------------
>
> Key: ORC-323
> URL: https://issues.apache.org/jira/browse/ORC-323
> Project: ORC
> Issue Type: Improvement
> Reporter: Ashish Sharma
> Priority: Major
>
> ORC supports predicate pushdown (block skipping) for ORC hive tables only on
> top-level fields.
> struct<int1:int,string1:string>
> ORC should also support block skipping on nested fields (within structs).
> struct<int1:int,complex:struct<int2:int,String1:string>>
> Advantage of having predicate pushdown in nested filed will allow ORC to skip
> blocks while having comparison at nested fields level. Skipping block will
> result in reduction of physical memory and compute.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
