[jira] [Work started] (IMPALA-10947) SQL support for querying Iceberg metadata

["Tamas Mate (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IMPALA-10947?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on IMPALA-10947 started by Tamas Mate.
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> SQL support for querying Iceberg metadata
> -----------------------------------------
>
>                 Key: IMPALA-10947
>                 URL: https://issues.apache.org/jira/browse/IMPALA-10947
>             Project: IMPALA
>          Issue Type: New Feature
>          Components: Frontend
>            Reporter: Zoltán Borók-Nagy
>            Assignee: Tamas Mate
>            Priority: Major
>              Labels: impala-iceberg
>
> HIVE-25457 added support for querying Iceberg table metadata to Hive.
> They support the following syntax:
> SELECT * FROM default.iceberg_table.history;
> Spark uses the same syntax: https://iceberg.apache.org/spark-queries/#history
> Other than "history", the following metadata tables are available in Iceberg:
> The following metadata tables are available in Iceberg:
> * ENTRIES,
> * FILES,
> * HISTORY,
> * SNAPSHOTS,
> * MANIFESTS,
> * PARTITIONS,
> * ALL_DATA_FILES,
> * ALL_MANIFESTS,
> * ALL_ENTRIES
> Impala currently only supports "DESCRIBE HISTORY <tbl>". The above SELECT syntax would be more convenient for the users, also it would be more flexible as users could easily define filters in WHERE clauses. And of course we would be consistent with other engines.



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