Package org.apache.hadoop.hdfs.server.federation.store.driver
@Private
@Evolving
package org.apache.hadoop.hdfs.server.federation.store.driver
The state store uses modular data storage classes derived from
StateStoreDriver to handle querying, updating and deleting data records. The
data storage driver is initialized and maintained by the StateStoreService.
The state store supports fetching all records of a type, filtering by column
values or fetching a single record by its primary key.
Each data storage backend is required to implement the methods contained in the StateStoreDriver interface. These methods allow the querying, updating, inserting and deleting of data records into the state store.
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ClassDescriptionDriver class for an implementation of a
StateStoreServiceprovider.State store operation result with list of failed records.Operations for a driver to manage records in the State Store.Serializer to store and retrieve data in the State Store.