catalog
Catalog
Bases: ABC
Base Catalog for table operations like - create, drop, load, list and others.
The catalog table APIs accept a table identifier, which is fully classified table name. The identifier can be a string or tuple of strings. If the identifier is a string, it is split into a tuple on '.'. If it is a tuple, it is used as-is.
The catalog namespace APIs follow a similar convention wherein they also accept a namespace identifier that can be a string or tuple of strings.
Attributes:
Name | Type | Description |
---|---|---|
name |
str
|
Name of the catalog. |
properties |
Properties
|
Catalog properties. |
Source code in pyiceberg/catalog/__init__.py
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__repr__()
create_namespace(namespace, properties=EMPTY_DICT)
abstractmethod
Create a namespace in the catalog.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
namespace |
str | Identifier
|
Namespace identifier. |
required |
properties |
Properties
|
A string dictionary of properties for the given namespace. |
EMPTY_DICT
|
Raises:
Type | Description |
---|---|
NamespaceAlreadyExistsError
|
If a namespace with the given name already exists. |
Source code in pyiceberg/catalog/__init__.py
create_table(identifier, schema, location=None, partition_spec=UNPARTITIONED_PARTITION_SPEC, sort_order=UNSORTED_SORT_ORDER, properties=EMPTY_DICT)
abstractmethod
Create a table.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
identifier |
str | Identifier
|
Table identifier. |
required |
schema |
Schema
|
Table's schema. |
required |
location |
str | None
|
Location for the table. Optional Argument. |
None
|
partition_spec |
PartitionSpec
|
PartitionSpec for the table. |
UNPARTITIONED_PARTITION_SPEC
|
sort_order |
SortOrder
|
SortOrder for the table. |
UNSORTED_SORT_ORDER
|
properties |
Properties
|
Table properties that can be a string based dictionary. |
EMPTY_DICT
|
Returns:
Name | Type | Description |
---|---|---|
Table |
Table
|
the created table instance. |
Raises:
Type | Description |
---|---|
TableAlreadyExistsError
|
If a table with the name already exists. |
Source code in pyiceberg/catalog/__init__.py
drop_namespace(namespace)
abstractmethod
Drop a namespace.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
namespace |
str | Identifier
|
Namespace identifier. |
required |
Raises:
Type | Description |
---|---|
NoSuchNamespaceError
|
If a namespace with the given name does not exist. |
NamespaceNotEmptyError
|
If the namespace is not empty. |
Source code in pyiceberg/catalog/__init__.py
drop_table(identifier)
abstractmethod
Drop a table.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
identifier |
str | Identifier
|
Table identifier. |
required |
Raises:
Type | Description |
---|---|
NoSuchTableError
|
If a table with the name does not exist. |
Source code in pyiceberg/catalog/__init__.py
identifier_to_tuple(identifier)
staticmethod
Parse an identifier to a tuple.
If the identifier is a string, it is split into a tuple on '.'. If it is a tuple, it is used as-is.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
identifier |
str | Identifier
|
an identifier, either a string or tuple of strings. |
required |
Returns:
Name | Type | Description |
---|---|---|
Identifier |
Identifier
|
a tuple of strings. |
Source code in pyiceberg/catalog/__init__.py
identifier_to_tuple_without_catalog(identifier)
Convert an identifier to a tuple and drop this catalog's name from the first element.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
identifier |
str | Identifier
|
Table identifier. |
required |
Returns:
Name | Type | Description |
---|---|---|
Identifier |
Identifier
|
a tuple of strings with this catalog's name removed |
Source code in pyiceberg/catalog/__init__.py
list_namespaces(namespace=())
abstractmethod
List namespaces from the given namespace. If not given, list top-level namespaces from the catalog.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
namespace |
str | Identifier
|
Namespace identifier to search. |
()
|
Returns:
Type | Description |
---|---|
List[Identifier]
|
List[Identifier]: a List of namespace identifiers. |
Raises:
Type | Description |
---|---|
NoSuchNamespaceError
|
If a namespace with the given name does not exist. |
Source code in pyiceberg/catalog/__init__.py
list_tables(namespace)
abstractmethod
List tables under the given namespace in the catalog.
If namespace not provided, will list all tables in the catalog.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
namespace |
str | Identifier
|
Namespace identifier to search. |
required |
Returns:
Type | Description |
---|---|
List[Identifier]
|
List[Identifier]: list of table identifiers. |
Raises:
Type | Description |
---|---|
NoSuchNamespaceError
|
If a namespace with the given name does not exist. |
Source code in pyiceberg/catalog/__init__.py
load_namespace_properties(namespace)
abstractmethod
Get properties for a namespace.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
namespace |
str | Identifier
|
Namespace identifier. |
required |
Returns:
Name | Type | Description |
---|---|---|
Properties |
Properties
|
Properties for the given namespace. |
Raises:
Type | Description |
---|---|
NoSuchNamespaceError
|
If a namespace with the given name does not exist. |
Source code in pyiceberg/catalog/__init__.py
load_table(identifier)
abstractmethod
Load the table's metadata and returns the table instance.
You can also use this method to check for table existence using 'try catalog.table() except NoSuchTableError'. Note: This method doesn't scan data stored in the table.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
identifier |
str | Identifier
|
Table identifier. |
required |
Returns:
Name | Type | Description |
---|---|---|
Table |
Table
|
the table instance with its metadata. |
Raises:
Type | Description |
---|---|
NoSuchTableError
|
If a table with the name does not exist. |
Source code in pyiceberg/catalog/__init__.py
namespace_from(identifier)
staticmethod
Extract table namespace from a table identifier.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
identifier |
Union[str, Identifier]
|
a table identifier. |
required |
Returns:
Name | Type | Description |
---|---|---|
Identifier |
Identifier
|
Namespace identifier. |
Source code in pyiceberg/catalog/__init__.py
purge_table(identifier)
Drop a table and purge all data and metadata files.
Note: This method only logs warning rather than raise exception when encountering file deletion failure.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
identifier |
str | Identifier
|
Table identifier. |
required |
Raises:
Type | Description |
---|---|
NoSuchTableError
|
If a table with the name does not exist, or the identifier is invalid. |
Source code in pyiceberg/catalog/__init__.py
register_table(identifier, metadata_location)
abstractmethod
Register a new table using existing metadata.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
identifier |
Union[str, Identifier]
|
Table identifier for the table |
required |
metadata_location |
str
|
The location to the metadata |
required |
Returns:
Name | Type | Description |
---|---|---|
Table |
Table
|
The newly registered table |
Raises:
Type | Description |
---|---|
TableAlreadyExistsError
|
If the table already exists |
Source code in pyiceberg/catalog/__init__.py
rename_table(from_identifier, to_identifier)
abstractmethod
Rename a fully classified table name.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
from_identifier |
str | Identifier
|
Existing table identifier. |
required |
to_identifier |
str | Identifier
|
New table identifier. |
required |
Returns:
Name | Type | Description |
---|---|---|
Table |
Table
|
the updated table instance with its metadata. |
Raises:
Type | Description |
---|---|
NoSuchTableError
|
If a table with the name does not exist. |
Source code in pyiceberg/catalog/__init__.py
table_name_from(identifier)
staticmethod
Extract table name from a table identifier.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
identifier |
str | Identifier
|
a table identifier. |
required |
Returns:
Name | Type | Description |
---|---|---|
str |
str
|
Table name. |
Source code in pyiceberg/catalog/__init__.py
update_namespace_properties(namespace, removals=None, updates=EMPTY_DICT)
abstractmethod
Remove provided property keys and updates properties for a namespace.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
namespace |
str | Identifier
|
Namespace identifier. |
required |
removals |
Set[str]
|
Set of property keys that need to be removed. Optional Argument. |
None
|
updates |
Properties
|
Properties to be updated for the given namespace. |
EMPTY_DICT
|
Raises:
Type | Description |
---|---|
NoSuchNamespaceError
|
If a namespace with the given name does not exist. |
ValueError
|
If removals and updates have overlapping keys. |
Source code in pyiceberg/catalog/__init__.py
delete_data_files(io, manifests_to_delete)
Delete data files linked to given manifests.
Log warnings if failing to delete any file.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
io |
FileIO
|
The FileIO used to delete the object. |
required |
manifests_to_delete |
List[ManifestFile]
|
A list of manifest contains paths of data files to be deleted. |
required |
Source code in pyiceberg/catalog/__init__.py
delete_files(io, files_to_delete, file_type)
Delete files.
Log warnings if failing to delete any file.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
io |
FileIO
|
The FileIO used to delete the object. |
required |
files_to_delete |
Set[str]
|
A set of file paths to be deleted. |
required |
file_type |
str
|
The type of the file. |
required |
Source code in pyiceberg/catalog/__init__.py
infer_catalog_type(name, catalog_properties)
Try to infer the type based on the dict.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
name |
str
|
Name of the catalog. |
required |
catalog_properties |
RecursiveDict
|
Catalog properties. |
required |
Returns:
Type | Description |
---|---|
Optional[CatalogType]
|
The inferred type based on the provided properties. |
Raises:
Type | Description |
---|---|
ValueError
|
Raises a ValueError in case properties are missing, or the wrong type. |
Source code in pyiceberg/catalog/__init__.py
load_catalog(name=None, **properties)
Load the catalog based on the properties.
Will look up the properties from the config, based on the name.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
name |
Optional[str]
|
The name of the catalog. |
None
|
properties |
Optional[str]
|
The properties that are used next to the configuration. |
{}
|
Returns:
Type | Description |
---|---|
Catalog
|
An initialized Catalog. |
Raises:
Type | Description |
---|---|
ValueError
|
Raises a ValueError in case properties are missing or malformed, or if it could not determine the catalog based on the properties. |