skyyws 8fcad905a1 IMPALA-9688: Support create iceberg table by impala ...

This patch mainly realizes the creation of iceberg table through impala,
we can use the following sql to create a new iceberg table:
    create table iceberg_test(
        level string,
        event_time timestamp,
        message string,
        register_time date,
        telephone array <string>
    )
    partition by spec(
        level identity,
        event_time identity,
        event_time hour,
        register_time day
    )
    stored as iceberg;
'identity' is one of Iceberg's Partition Transforms. 'identity' means that
the source data values are used to create partitions, and other partition
transfroms would be supported in the future, such as BUCKET/TRUNCATE. We
can alse use 'show create table iceberg_test' to display table schema, and
use 'show partitions iceberg_test' to display partition column info. By the
way, partition column must be the source column.

Testing:
- Add test cases in metadata/test_show_create_table.py.
- Add custom cluster test test_iceberg.py.

Change-Id: I8d85db4c904a8c758c4cfb4f19cfbdab7e6ea284
Reviewed-on: http://gerrit.cloudera.org:8080/15797
Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>

2020-06-18 21:56:32 +00:00

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