ICEBERG_META
Descriptionβ
iceberg_meta table-valued-function(tvf), Use for read iceberg metadata, operation history, snapshots of table, file metadata etc.
Syntaxβ
ICEBERG_META(
"table" = "<table>",
"query_type" = "<query_type>"
);
Required Parametersβ
Each parameter in the iceberg_meta
table function (tvf) is a "key"="value"
pair.
Field | Description |
---|---|
<table> | The full table name, which must be specified in the format of database_name.table_name for the Iceberg table that you want to view. |
<query_type> | The type of metadata you want to view. Currently, only snapshots is supported. |
Examplesβ
-
Read and access the iceberg tabular metadata for snapshots.
select * from iceberg_meta("table" = "ctl.db.tbl", "query_type" = "snapshots");
-
Can be used with
desc function
:desc function iceberg_meta("table" = "ctl.db.tbl", "query_type" = "snapshots");
-
Inspect the iceberg table snapshots :
select * from iceberg_meta("table" = "iceberg_ctl.test_db.test_tbl", "query_type" = "snapshots");
+------------------------+----------------+---------------+-----------+-------------------+------------------------------+
| committed_at | snapshot_id | parent_id | operation | manifest_list | summary |
+------------------------+----------------+---------------+-----------+-------------------+------------------------------+
| 2022-09-20 11:14:29 | 64123452344 | -1 | append | hdfs:/path/to/m1 | {"flink.job-id":"xxm1", ...} |
| 2022-09-21 10:36:35 | 98865735822 | 64123452344 | overwrite | hdfs:/path/to/m2 | {"flink.job-id":"xxm2", ...} |
| 2022-09-21 21:44:11 | 51232845315 | 98865735822 | overwrite | hdfs:/path/to/m3 | {"flink.job-id":"xxm3", ...} |
+------------------------+----------------+---------------+-----------+-------------------+------------------------------+ -
Filtered by snapshot_id :
select * from iceberg_meta("table" = "iceberg_ctl.test_db.test_tbl", "query_type" = "snapshots") where snapshot_id = 98865735822;
+------------------------+----------------+---------------+-----------+-------------------+------------------------------+
| committed_at | snapshot_id | parent_id | operation | manifest_list | summary |
+------------------------+----------------+---------------+-----------+-------------------+------------------------------+
| 2022-09-21 10:36:35 | 98865735822 | 64123452344 | overwrite | hdfs:/path/to/m2 | {"flink.job-id":"xxm2", ...} |
+------------------------+----------------+---------------+-----------+-------------------+------------------------------+