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https://issues.apache.org/jira/browse/IMPALA-10075?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on IMPALA-10075 started by Quanlong Huang.
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> Reuse existing instances of unchanged partitions in REFRESH
> -----------------------------------------------------------
>
> Key: IMPALA-10075
> URL: https://issues.apache.org/jira/browse/IMPALA-10075
> Project: IMPALA
> Issue Type: Improvement
> Reporter: Quanlong Huang
> Assignee: Quanlong Huang
> Priority: Critical
>
> It's revealed by IMPALA-3127 that REFRESH will always update all partition
> instances (at least after IMPALA-9778). We should check if the new partition
> instance is the same as the original one, and only update them when needs.
> This reduce unneccessary catalog updates.
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