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https://issues.apache.org/jira/browse/HIVE-25453?focusedWorklogId=641010&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-641010
]
ASF GitHub Bot logged work on HIVE-25453:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 24/Aug/21 09:19
Start Date: 24/Aug/21 09:19
Worklog Time Spent: 10m
Work Description: pvary commented on a change in pull request #2586:
URL: https://github.com/apache/hive/pull/2586#discussion_r694673583
##########
File path: ql/src/java/org/apache/hadoop/hive/ql/io/orc/OrcInputFormat.java
##########
@@ -2693,6 +2696,77 @@ public static TypeDescription
getDesiredRowTypeDescr(Configuration conf,
return result;
}
+ /**
+ * Based on the file schema and the low level file includes provided in the
SchemaEvolution instance, this method
+ * calculates which top level columns should be included i.e. if any of the
nested columns inside complex types is
+ * required, then its relevant top level parent column will be considered as
required (and thus the full subtree).
+ * Hive and LLAP currently only supports column pruning on the first level,
thus we need to calculate this ourselves.
Review comment:
So for ACID tables column pruning is not working, since the data is
contained in the row struct?
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Issue Time Tracking
-------------------
Worklog Id: (was: 641010)
Time Spent: 1.5h (was: 1h 20m)
> Add LLAP IO support for Iceberg ORC tables
> ------------------------------------------
>
> Key: HIVE-25453
> URL: https://issues.apache.org/jira/browse/HIVE-25453
> Project: Hive
> Issue Type: New Feature
> Reporter: Ádám Szita
> Assignee: Ádám Szita
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1.5h
> Remaining Estimate: 0h
>
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