org.apache.hadoop.fs.s3a.s3guard (Apache Hadoop Amazon Web Services support 3.1.4 API)

Interface Summary
Interface	Description
DynamoDBClientFactory	Interface to create a DynamoDB client.
MetadataStore	`MetadataStore` defines the set of operations that any metadata store implementation must provide.

Class Summary
Class	Description
DescendantsIterator	`DescendantsIterator` is a `RemoteIterator` that implements pre-ordering breadth-first traversal (BFS) of a path and all of its descendants recursively.
DirListingMetadata	`DirListingMetadata` models a directory listing stored in a `MetadataStore`.
DynamoDBClientFactory.DefaultDynamoDBClientFactory	The default implementation for creating an AmazonDynamoDB.
DynamoDBMetadataStore	DynamoDBMetadataStore is a `MetadataStore` that persists file system metadata to DynamoDB.
LocalMetadataStore	This is a local, in-memory, implementation of MetadataStore.
LruHashMap<K,V>	LinkedHashMap that implements a maximum size and LRU eviction policy.
MetadataStoreListFilesIterator	`MetadataStoreListFilesIterator` is a `RemoteIterator` that is similar to `DescendantsIterator` but does not return directories that have (or may have) children, and will also provide access to the set of tombstones to allow recently deleted S3 objects to be filtered out from a corresponding request.
NullMetadataStore	A no-op implementation of MetadataStore.
PathMetadata	`PathMetadata` models path metadata stored in the `MetadataStore`.
S3Guard	Logic for integrating MetadataStore with S3A.
S3GuardTool	CLI to manage S3Guard Metadata Store.

Package org.apache.hadoop.fs.s3a.s3guard Description

This package contains classes related to S3Guard: a feature of S3A to mask the eventual consistency behavior of S3 and optimize access patterns by coordinating with a strongly consistent external store for file system metadata.