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https://issues.apache.org/jira/browse/IMPALA-12609?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17833136#comment-17833136
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ASF subversion and git services commented on IMPALA-12609:
----------------------------------------------------------
Commit 72732da9d8d9211b9dc374af42340c56968fb86a in impala's branch
refs/heads/master from Daniel Becker
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=72732da9d ]
IMPALA-12609: Implement SHOW METADATA TABLES IN statement to list Iceberg
Metadata tables
After this change, the new SHOW METADATA TABLES IN statement can be used
to list all the available metadata tables of an Iceberg table.
Note that in contrast to querying the contents of Iceberg metadata tables,
this does not require fully qualified paths, e.g. both
SHOW METADATA TABLES IN functional_parquet.iceberg_query_metadata;
and
USE functional_parquet;
SHOW METADATA TABLES IN iceberg_query_metadata;
work.
The available metadata tables for all Iceberg tables are the same,
corresponding to the values of the enum
"org.apache.iceberg.MetadataTableType", so there is actually no need to
pass the name of the regular table for which the metadata table list is
requested through Thrift. This change, however, does send the table name
because this way
- if we add support for metadata tables for other table formats, the
table name/path will be necessary to determine the correct list of
metadata tables
- we could later add support for different authorisation policies for
individual tables
- we can check also at the point of generating the list of metadata
tables that the table is an Iceberg table
Testing:
- added and updated tests in ParserTest, AnalyzeDDLTest, ToSqlTest and
AuthorizationStmtTest
- added a custom cluster test in test_authorization.py
- added functional tests in iceberg-metadata-tables.test
Change-Id: Ide10ccf10fc0abf5c270119ba7092c67e712ec49
Reviewed-on: http://gerrit.cloudera.org:8080/21026
Tested-by: Impala Public Jenkins <[email protected]>
Reviewed-by: Zoltan Borok-Nagy <[email protected]>
> Implement SHOW TABLES IN statement to list Iceberg Metadata tables
> ------------------------------------------------------------------
>
> Key: IMPALA-12609
> URL: https://issues.apache.org/jira/browse/IMPALA-12609
> Project: IMPALA
> Issue Type: Sub-task
> Components: Frontend
> Affects Versions: Impala 4.4.0
> Reporter: Tamas Mate
> Assignee: Daniel Becker
> Priority: Minor
> Labels: impala-iceberg
>
> {{SHOW TABLES IN}} statement could be used to list all the available metadata
> tables of an Iceberg table.
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