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https://issues.apache.org/jira/browse/HIVE-19442?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eugene Koifman updated HIVE-19442:
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Component/s: Transactions
> convert Hive stats to deltas
> ----------------------------
>
> Key: HIVE-19442
> URL: https://issues.apache.org/jira/browse/HIVE-19442
> Project: Hive
> Issue Type: Bug
> Components: Transactions
> Reporter: Sergey Shelukhin
> Priority: Major
>
> This would allow for
> 1) Accurate stats after partial operations like inserts.
> 2) Better ACID integration.
> The idea is for partition stats and table stats to be written as deltas, with
> a flag that indicates this is a delta (i.e. "this insert wrote 500 rows").
> The flag like this would also allow us to avoid converting old stats.
> Thats can be merged after the query if appropriate locking is present and the
> table is not transactional, or by compactor, based on ACID watermarks, when
> the table is transactional.
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