Package org.apache.hadoop.ozone.om

package org.apache.hadoop.ozone.om

This package contains the Ozone Manager classes.

Related Packages

Package	Description
org.apache.hadoop.ozone.om.codec	Utility classes to encode/decode DTO objects to/from byte array.
org.apache.hadoop.ozone.om.execution	This package contains classes for the OM execution implementation.
org.apache.hadoop.ozone.om.fs	This package contains the Ozone Manager FileSystem interface classes.
org.apache.hadoop.ozone.om.ha	This package contains classes related to OM HA.
org.apache.hadoop.ozone.om.helpers	This package contains Ozone manager helper class.
org.apache.hadoop.ozone.om.lock	This package contains classes and interfaces for OM Lock Strategy Patterns.
org.apache.hadoop.ozone.om.multitenant	This package contains classes related to Ozone Multi tenancy.
org.apache.hadoop.ozone.om.ratis	This package contains classes for the OM Ratis server implementation.
org.apache.hadoop.ozone.om.ratis_snapshot	This package contains OM Ratis Snapshot related classes.
org.apache.hadoop.ozone.om.request	This package contains classes for handling OMRequests.
org.apache.hadoop.ozone.om.response	This package contains classes for the OM Responses.
org.apache.hadoop.ozone.om.s3	This package contains S3 secret store related classes.
org.apache.hadoop.ozone.om.service	The package contains Ozone Manager background services.
org.apache.hadoop.ozone.om.snapshot	This package contains OM Snapshot related classes.
org.apache.hadoop.ozone.om.upgrade	This package contains OM Upgrade related classes.

Class	Description
BucketManager	BucketManager handles all the bucket level operations.
BucketManagerImpl	Implementation for BucketManager BucketManager uses MetadataDB to store bucket level information.
BucketUtilizationMetrics	A class for collecting and reporting bucket utilization metrics.
DeleteKeysResult	Used in DirectoryDeletingService to capture the result of each delete task.
DeletingServiceMetrics	Class contains metrics related to the OM Deletion services.
GrpcOzoneManagerServer	Separated network server for gRPC transport OzoneManagerService s3g->OM.
IOzoneAcl	Interface for Ozone Acl management.
KeyManager	Handles key level commands.
KeyManagerImpl	Implementation of keyManager.
ListIterator	Common class to do listing of resources after merging rocksDB table cache and actual table.
ListIterator.CacheIter<Value>	Iterator for Cache entries in a Dir and File Table.
ListIterator.ClosableIterator	Interface for iteration of Heap Entries.
ListIterator.DbTableIter<Value>	Iterator for DB entries from a given rocksDB table.
ListIterator.HeapEntry	Entry to be added to the heap.
ListIterator.MinHeapIterator	Implement lexicographical sorting of the file status by sorting file status across multiple lists.
OMDBCheckpointServlet	Provides the current checkpoint Snapshot of the OM DB.
OmMetadataManagerImpl	Ozone metadata manager interface.
OmMetadataReader	OM Metadata Reading class for the OM and Snapshot managers.
OmMetadataReaderMetrics	Interface OM Metadata Reading metrics classes.
OMMetrics	This class is for maintaining Ozone Manager statistics.
OmMetricsInfo	OmMetricsInfo stored in a file, which will be used during OM restart to initialize the metrics.
OMMultiTenantManager	OM MultiTenant manager interface.
OMMultiTenantManagerImpl	Implements OMMultiTenantManager.
OMMXBean	This is the JMX management interface for OM information.
OMPerformanceMetrics	Including OM performance related metrics.
OMPolicyProvider	PolicyProvider for OM protocols.
OmSnapshot	Metadata Reading class for OM Snapshots.
OmSnapshotInternalMetrics	This class contains internal Snapshot Operation metrics.
OmSnapshotLocalData	OmSnapshotLocalData is the in-memory representation of snapshot local metadata.
OmSnapshotLocalData.VersionMeta	Represents metadata for a specific version in a snapshot.
OmSnapshotLocalDataYaml	Class for creating and reading snapshot local properties / data YAML files.
OmSnapshotLocalDataYaml.YamlFactory	Factory class for constructing and pooling instances of the Yaml object.
OmSnapshotManager	This class is used to manage/create OM snapshots.
OmSnapshotMetrics	This class is for maintaining Snapshot Manager statistics.
OMStarterInterface	This interface is used by the OzoneManagerStarter class to allow the dependencies to be injected to the CLI class.
OMStorage	Ozone Manager VERSION file representation.
OzoneAclUtils	Ozone Acl Wrapper class.
OzoneConfigUtil	Utility class for ozone configurations.
OzoneListStatusHelper	Helper class for fetching List Status for a path.
OzoneListStatusHelper.GetFileStatusHelper	Interface to get the File Status for a path.
OzoneManager	Ozone Manager is the metadata manager of ozone.
OzoneManager.StartupOption	OM Startup mode.
OzoneManagerHttpServer	HttpServer wrapper for the OzoneManager.
OzoneManagerPrepareState	Controls the prepare state of the OzoneManager containing the instance.
OzoneManagerPrepareState.State	The current state of preparation is defined by the status and the prepare index that are currently set.
OzoneManagerServiceGrpc	Grpc Service for handling S3 gateway OzoneManagerProtocol client requests.
OzoneManagerStarter	This class provides a command line interface to start the OM using Picocli.
OzoneManagerUtils	Ozone Manager utility class.
OzonePrefixPathImpl	Implementation of OzonePrefixPath interface.
OzoneTrash	OzoneTrash which takes an OM as parameter .
PendingKeysDeletion	Tracks metadata for keys pending deletion and their associated blocks.
PendingKeysDeletion.PurgedKey	Represents metadata for a key that has been purged.
PrefixManager	Handles prefix commands.
PrefixManagerImpl	Implementation of PrefixManager.
PrefixManagerImpl.OMPrefixAclOpResult	Result of the prefix acl operation.
ResolvedBucket	Bundles information about a bucket, which is possibly a symlink, and the real bucket that it resolves to, if it is indeed a link.
S3SecretManagerImpl	S3 Secret manager.
ScmClient	Wrapper class for Scm protocol clients.
ServiceListJSONServlet	Provides REST access to Ozone Service List.
SnapshotChainInfo	SnapshotChain supporting SnapshotInfo class.
SnapshotChainManager	This class is used for creating and accessing Snapshot Chains.
SnapshotDefragService	Background service for defragmenting snapshots in the active snapshot chain.
SstFilteringService	When snapshots are taken, an entire snapshot of the OM RocksDB is captured and it will contain SST files corresponding to all volumes/buckets and keys and also have data from all the tables (columnFamilies) defined in the rocksdb This is a background service which will cleanup and filter out all the irrelevant and safe to delete sst files that don't correspond to the bucket on which the snapshot was taken.
TenantOp	Interface for tenant operations.
TrashOzoneFileSystem	FileSystem to be used by the Trash Emptier.
VolumeManager	VolumeManager is responsible for read operations on a volume.
VolumeManagerImpl	Volume Manager implementation.