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https://issues.apache.org/jira/browse/IMPALA-7536?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Quanlong Huang updated IMPALA-7536:
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Epic Link: IMPALA-14861
> Re-evaluate Avro/Kudu/HBase table performance with fetch-from-catalogd
> ----------------------------------------------------------------------
>
> Key: IMPALA-7536
> URL: https://issues.apache.org/jira/browse/IMPALA-7536
> Project: IMPALA
> Issue Type: Task
> Components: Catalog
> Reporter: Todd Lipcon
> Priority: Major
> Labels: catalog-v2
>
> The Avro, Kudu,and HBase table support for LocalCatalog was written with
> "fetch-from-source" in mind. Thus, they spend considerable effort to
> determine the schema on the impalad side when the table is loaded. In "fetch
> from catalogd" mode, the catalogd has already done this schema resolution,
> and we're likely better off not doing the extra work on the impalad. We
> should do a pass back over those table types to make sure there isn't
> unnecessary work being performed.
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