[jira] [Work started] (IMPALA-10613) Expose table and partition metadata over HMS API

["Vihang Karajgaonkar (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IMPALA-10613?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on IMPALA-10613 started by Vihang Karajgaonkar.
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> Expose table and partition metadata over HMS API
> ------------------------------------------------
>
>                 Key: IMPALA-10613
>                 URL: https://issues.apache.org/jira/browse/IMPALA-10613
>             Project: IMPALA
>          Issue Type: Sub-task
>            Reporter: Vihang Karajgaonkar
>            Assignee: Vihang Karajgaonkar
>            Priority: Major
>
> Catalogd caches the table and partition metadata. If an external FE needs to be supported to query using the Impala, it would need to get this metadata from catalogd to compile the query and generate the plan. While a subset of the metadata which is cached in catalogd, is sourced from Hive metastore, it also caches file metadata which is needed by the Impala backend to create the Impala plan. It would be good to expose the table and partition metadata cached in catalogd over HMS API so that any Hive metastore client (e.g spark, hive) can potentially use this metadata to create a plan. This JIRA tracks the work needed to expose this information over catalogd.



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