Uses of Class
org.apache.hadoop.fs.s3a.s3guard.PathMetadata

Packages that use PathMetadata

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

Uses of PathMetadata in org.apache.hadoop.fs.s3a.s3guard

Subclasses of PathMetadata in org.apache.hadoop.fs.s3a.s3guard

Modifier and Type	Class and Description
class	DDBPathMetadata DDBPathMetadata wraps PathMetadata and adds the isAuthoritativeDir flag to provide support for authoritative directory listings in DynamoDBMetadataStore.

Fields in org.apache.hadoop.fs.s3a.s3guard with type parameters of type PathMetadata

Modifier and Type	Field and Description
static Collection<PathMetadata>	DirListingMetadata.EMPTY_DIR Convenience parameter for passing into constructor.

Methods in org.apache.hadoop.fs.s3a.s3guard that return PathMetadata

Modifier and Type	Method and Description
PathMetadata	DirListingMetadata.get(org.apache.hadoop.fs.Path childPath) Lookup entry within this directory listing.
PathMetadata	MetadataStore.get(org.apache.hadoop.fs.Path path) Gets metadata for a path.
PathMetadata	NullMetadataStore.get(org.apache.hadoop.fs.Path path)
PathMetadata	LocalMetadataStore.get(org.apache.hadoop.fs.Path p)
PathMetadata	MetadataStore.get(org.apache.hadoop.fs.Path path, boolean wantEmptyDirectoryFlag) Gets metadata for a path.
PathMetadata	NullMetadataStore.get(org.apache.hadoop.fs.Path path, boolean wantEmptyDirectoryFlag)
PathMetadata	LocalMetadataStore.get(org.apache.hadoop.fs.Path p, boolean wantEmptyDirectoryFlag)
PathMetadata	LocalMetadataEntry.getFileMeta()
static PathMetadata	PathMetadata.tombstone(org.apache.hadoop.fs.Path path) Create a tombstone from the current time.

Methods in org.apache.hadoop.fs.s3a.s3guard that return types with arguments of type PathMetadata

Modifier and Type	Method and Description
Collection<PathMetadata>	DirListingMetadata.getListing()

Methods in org.apache.hadoop.fs.s3a.s3guard with parameters of type PathMetadata

Modifier and Type	Method and Description
void	MetadataStore.put(PathMetadata meta) Saves metadata for exactly one path.
void	NullMetadataStore.put(PathMetadata meta)
void	DynamoDBMetadataStore.put(PathMetadata meta)
void	LocalMetadataStore.put(PathMetadata meta)
void	LocalMetadataEntry.setPathMetadata(PathMetadata pathMetadata)

Method parameters in org.apache.hadoop.fs.s3a.s3guard with type arguments of type PathMetadata

Modifier and Type	Method and Description
static void	S3Guard.addMoveAncestors(MetadataStore ms, Collection<org.apache.hadoop.fs.Path> srcPaths, Collection<PathMetadata> dstMetas, org.apache.hadoop.fs.Path srcRoot, org.apache.hadoop.fs.Path srcPath, org.apache.hadoop.fs.Path dstPath, String owner) Helper method that records the move of all ancestors of a path.
static void	S3Guard.addMoveDir(MetadataStore ms, Collection<org.apache.hadoop.fs.Path> srcPaths, Collection<PathMetadata> dstMetas, org.apache.hadoop.fs.Path srcPath, org.apache.hadoop.fs.Path dstPath, String owner) Helper function that records the move of directory paths, adding resulting metadata to the supplied lists.
static void	S3Guard.addMoveFile(MetadataStore ms, Collection<org.apache.hadoop.fs.Path> srcPaths, Collection<PathMetadata> dstMetas, org.apache.hadoop.fs.Path srcPath, org.apache.hadoop.fs.Path dstPath, long size, long blockSize, String owner) Like S3Guard.addMoveDir(MetadataStore, Collection, Collection, Path, Path, String) (), but for files.
void	MetadataStore.move(Collection<org.apache.hadoop.fs.Path> pathsToDelete, Collection<PathMetadata> pathsToCreate) Record the effects of a FileSystem.rename(Path, Path) in the MetadataStore.
void	NullMetadataStore.move(Collection<org.apache.hadoop.fs.Path> pathsToDelete, Collection<PathMetadata> pathsToCreate)
void	DynamoDBMetadataStore.move(Collection<org.apache.hadoop.fs.Path> pathsToDelete, Collection<PathMetadata> pathsToCreate)
void	LocalMetadataStore.move(Collection<org.apache.hadoop.fs.Path> pathsToDelete, Collection<PathMetadata> pathsToCreate)
void	MetadataStore.put(Collection<PathMetadata> metas) Saves metadata for any number of paths.
void	NullMetadataStore.put(Collection<PathMetadata> meta)
void	DynamoDBMetadataStore.put(Collection<PathMetadata> metas)
void	LocalMetadataStore.put(Collection<PathMetadata> metas)

Constructors in org.apache.hadoop.fs.s3a.s3guard with parameters of type PathMetadata

Constructor and Description
DDBPathMetadata(PathMetadata pmd)
DDBPathMetadata(PathMetadata pmd, boolean isAuthoritativeDir)
DescendantsIterator(MetadataStore ms, PathMetadata meta) Creates a new DescendantsIterator.
MetadataStoreListFilesIterator(MetadataStore ms, PathMetadata meta, boolean allowAuthoritative)

Constructor parameters in org.apache.hadoop.fs.s3a.s3guard with type arguments of type PathMetadata

Constructor and Description
DirListingMetadata(org.apache.hadoop.fs.Path path, Collection<PathMetadata> listing, boolean isAuthoritative) Create a directory listing metadata container.