Package org.apache.hadoop.ozone.container.common

package org.apache.hadoop.ozone.container.common

Common Container Layer. At this layer the abstractions are:

1. Containers - Both data and metadata containers.
2. Keys - Key/Value pairs that live inside a container.
3. Chunks - Keys can be composed of many chunks.

Ozone uses these abstractions to build Volumes, Buckets and Keys.

Related Packages

Package	Description
org.apache.hadoop.ozone.container.common.helpers	Contains protocol buffer helper classes and utilites used in impl.
org.apache.hadoop.ozone.container.common.impl	This package is contains Ozone container implementation.
org.apache.hadoop.ozone.container.common.interfaces	This package contains common ozone container interfaces.
org.apache.hadoop.ozone.container.common.report	Datanode Reports: As part of heartbeat, datanode has to share its current state with SCM.
org.apache.hadoop.ozone.container.common.statemachine	State machine class is used by the container to denote various states a container can be in and also is used for command processing.
org.apache.hadoop.ozone.container.common.states	Package to hold datanode states related classes.
org.apache.hadoop.ozone.container.common.utils	Common container utils.
org.apache.hadoop.ozone.container.common.volume	This package contains volume/ disk related classes.

Classes

Class	Description
DatanodeLayoutStorage	DataNodeStorageConfig is responsible for management of the StorageDirectories used by the DataNode.
HDDSVolumeLayoutVersion	Layout version which describes information about the layout version on the datanode volume.