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trait ExternalCatalog extends AnyRef

Interface for the system catalog (of functions, partitions, tables, and databases).

This is only used for non-temporary items, and implementations must be thread-safe as they can be accessed in multiple threads. This is an external catalog because it is expected to interact with external systems.

Implementations should throw NoSuchDatabaseException when databases don't exist.

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ExternalCatalogWithListener, InMemoryCatalog
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Abstract Value Members

  1. abstract def alterDatabase(dbDefinition: CatalogDatabase): Unit

    Alter a database whose name matches the one specified in dbDefinition, assuming the database exists.

    Alter a database whose name matches the one specified in dbDefinition, assuming the database exists.

    Note: If the underlying implementation does not support altering a certain field, this becomes a no-op.

  2. abstract def alterFunction(db: String, funcDefinition: CatalogFunction): Unit
  3. abstract def alterPartitions(db: String, table: String, parts: Seq[CatalogTablePartition]): Unit

    Alter one or many table partitions whose specs that match those specified in parts, assuming the partitions exist.

    Alter one or many table partitions whose specs that match those specified in parts, assuming the partitions exist.

    Note: If the underlying implementation does not support altering a certain field, this becomes a no-op.

  4. abstract def alterTable(tableDefinition: CatalogTable): Unit

    Alter a table whose database and name match the ones specified in tableDefinition, assuming the table exists.

    Alter a table whose database and name match the ones specified in tableDefinition, assuming the table exists. Note that, even though we can specify database in tableDefinition, it's used to identify the table, not to alter the table's database, which is not allowed.

    Note: If the underlying implementation does not support altering a certain field, this becomes a no-op.

  5. abstract def alterTableDataSchema(db: String, table: String, newDataSchema: StructType): Unit

    Alter the data schema of a table identified by the provided database and table name.

    Alter the data schema of a table identified by the provided database and table name. The new data schema should not have conflict column names with the existing partition columns, and should still contain all the existing data columns.

    db

    Database that table to alter schema for exists in

    table

    Name of table to alter schema for

    newDataSchema

    Updated data schema to be used for the table.

  6. abstract def alterTableStats(db: String, table: String, stats: Option[CatalogStatistics]): Unit

    Alter the statistics of a table.

    Alter the statistics of a table. If stats is None, then remove all existing statistics.

  7. abstract def createDatabase(dbDefinition: CatalogDatabase, ignoreIfExists: Boolean): Unit
  8. abstract def createFunction(db: String, funcDefinition: CatalogFunction): Unit
  9. abstract def createPartitions(db: String, table: String, parts: Seq[CatalogTablePartition], ignoreIfExists: Boolean): Unit
  10. abstract def createTable(tableDefinition: CatalogTable, ignoreIfExists: Boolean): Unit
  11. abstract def databaseExists(db: String): Boolean
  12. abstract def dropDatabase(db: String, ignoreIfNotExists: Boolean, cascade: Boolean): Unit
  13. abstract def dropFunction(db: String, funcName: String): Unit
  14. abstract def dropPartitions(db: String, table: String, parts: Seq[TablePartitionSpec], ignoreIfNotExists: Boolean, purge: Boolean, retainData: Boolean): Unit
  15. abstract def dropTable(db: String, table: String, ignoreIfNotExists: Boolean, purge: Boolean): Unit
  16. abstract def functionExists(db: String, funcName: String): Boolean
  17. abstract def getDatabase(db: String): CatalogDatabase
  18. abstract def getFunction(db: String, funcName: String): CatalogFunction
  19. abstract def getPartition(db: String, table: String, spec: TablePartitionSpec): CatalogTablePartition
  20. abstract def getPartitionOption(db: String, table: String, spec: TablePartitionSpec): Option[CatalogTablePartition]

    Returns the specified partition or None if it does not exist.

  21. abstract def getTable(db: String, table: String): CatalogTable
  22. abstract def getTablesByName(db: String, tables: Seq[String]): Seq[CatalogTable]
  23. abstract def listDatabases(pattern: String): Seq[String]
  24. abstract def listDatabases(): Seq[String]
  25. abstract def listFunctions(db: String, pattern: String): Seq[String]
  26. abstract def listPartitionNames(db: String, table: String, partialSpec: Option[TablePartitionSpec] = None): Seq[String]

    List the names of all partitions that belong to the specified table, assuming it exists.

    List the names of all partitions that belong to the specified table, assuming it exists.

    For a table with partition columns p1, p2, p3, each partition name is formatted as p1=v1/p2=v2/p3=v3. Each partition column name and value is an escaped path name, and can be decoded with the ExternalCatalogUtils.unescapePathName method.

    The returned sequence is sorted as strings.

    A partial partition spec may optionally be provided to filter the partitions returned, as described in the listPartitions method.

    db

    database name

    table

    table name

    partialSpec

    partition spec

  27. abstract def listPartitions(db: String, table: String, partialSpec: Option[TablePartitionSpec] = None): Seq[CatalogTablePartition]

    List the metadata of all partitions that belong to the specified table, assuming it exists.

    List the metadata of all partitions that belong to the specified table, assuming it exists.

    A partial partition spec may optionally be provided to filter the partitions returned. For instance, if there exist partitions (a='1', b='2'), (a='1', b='3') and (a='2', b='4'), then a partial spec of (a='1') will return the first two only.

    db

    database name

    table

    table name

    partialSpec

    partition spec

  28. abstract def listPartitionsByFilter(db: String, table: String, predicates: Seq[Expression], defaultTimeZoneId: String): Seq[CatalogTablePartition]

    List the metadata of partitions that belong to the specified table, assuming it exists, that satisfy the given partition-pruning predicate expressions.

    List the metadata of partitions that belong to the specified table, assuming it exists, that satisfy the given partition-pruning predicate expressions.

    db

    database name

    table

    table name

    predicates

    partition-pruning predicates

    defaultTimeZoneId

    default timezone id to parse partition values of TimestampType

  29. abstract def listTables(db: String, pattern: String): Seq[String]
  30. abstract def listTables(db: String): Seq[String]
  31. abstract def listViews(db: String, pattern: String): Seq[String]
  32. abstract def loadDynamicPartitions(db: String, table: String, loadPath: String, partition: TablePartitionSpec, replace: Boolean, numDP: Int): Unit
  33. abstract def loadPartition(db: String, table: String, loadPath: String, partition: TablePartitionSpec, isOverwrite: Boolean, inheritTableSpecs: Boolean, isSrcLocal: Boolean): Unit

    Loads data into a partition.

    Loads data into a partition.

    isSrcLocal

    Whether the source data is local, as defined by the "LOAD DATA LOCAL" HiveQL command.

  34. abstract def loadTable(db: String, table: String, loadPath: String, isOverwrite: Boolean, isSrcLocal: Boolean): Unit

    Loads data into a table.

    Loads data into a table.

    isSrcLocal

    Whether the source data is local, as defined by the "LOAD DATA LOCAL" HiveQL command.

  35. abstract def renameFunction(db: String, oldName: String, newName: String): Unit
  36. abstract def renamePartitions(db: String, table: String, specs: Seq[TablePartitionSpec], newSpecs: Seq[TablePartitionSpec]): Unit

    Override the specs of one or many existing table partitions, assuming they exist.

    Override the specs of one or many existing table partitions, assuming they exist. This assumes index i of specs corresponds to index i of newSpecs.

  37. abstract def renameTable(db: String, oldName: String, newName: String): Unit
  38. abstract def setCurrentDatabase(db: String): Unit
  39. abstract def tableExists(db: String, table: String): Boolean

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  15. def requireDbExists(db: String): Unit
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  16. def requireFunctionExists(db: String, funcName: String): Unit
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  17. def requireFunctionNotExists(db: String, funcName: String): Unit
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  18. def requireTableExists(db: String, table: String): Unit
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