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https://issues.apache.org/jira/browse/HIVE-15988?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Teddy Choi updated HIVE-15988:
------------------------------
Description:
HIVE-12631 implemented ORC ACID table support in LLAP. If we cache ACID delta
in LLAP, it will be faster.
The cache is currently low-level (CB-level in ORC), so we could just use it to
read bases and deltas (deltas should be cached with higher priority) and merge
as usual. We could also cache merged representation in future.
> LLAP: cache ORC ACID deltas
> ---------------------------
>
> Key: HIVE-15988
> URL: https://issues.apache.org/jira/browse/HIVE-15988
> Project: Hive
> Issue Type: Improvement
> Components: llap, Transactions
> Reporter: Teddy Choi
> Assignee: Teddy Choi
>
> HIVE-12631 implemented ORC ACID table support in LLAP. If we cache ACID delta
> in LLAP, it will be faster.
> The cache is currently low-level (CB-level in ORC), so we could just use it
> to read bases and deltas (deltas should be cached with higher priority) and
> merge as usual. We could also cache merged representation in future.
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