| Package | Description | 
|---|---|
| org.apache.hadoop.yarn.server.timelineservice.storage.application | Package org.apache.hadoop.yarn.server.timelineservice.storage.application
 contains classes related to implementation for application table. | 
| org.apache.hadoop.yarn.server.timelineservice.storage.apptoflow | Package org.apache.hadoop.yarn.server.timelineservice.storage.apptoflow
 contains classes related to implementation for app to flow table. | 
| org.apache.hadoop.yarn.server.timelineservice.storage.common | Package org.apache.hadoop.yarn.server.timelineservice.storage.common contains
 a set of utility classes used across backend storage reader and writer. | 
| org.apache.hadoop.yarn.server.timelineservice.storage.domain | Package org.apache.hadoop.yarn.server.timelineservice.storage.domain
 contains classes related to implementation for domain table. | 
| org.apache.hadoop.yarn.server.timelineservice.storage.entity | Package org.apache.hadoop.yarn.server.timelineservice.storage.entity
 contains classes related to implementation for entity table. | 
| org.apache.hadoop.yarn.server.timelineservice.storage.flow | Package org.apache.hadoop.yarn.server.timelineservice.storage.flow
 contains classes related to implementation for flow related tables, viz. | 
| org.apache.hadoop.yarn.server.timelineservice.storage.subapplication | Package org.apache.hadoop.yarn.server.timelineservice.storage.subapplication
 contains classes related to implementation for subapplication table. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | ApplicationTableThe application table as column families info, config and metrics. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | AppToFlowTableThe app_flow table as column families mapping. | 
| Modifier and Type | Interface and Description | 
|---|---|
| interface  | Column<T extends BaseTable<T>>A Column represents the way to store a fully qualified column in a specific
 table. | 
| interface  | ColumnFamily<T extends BaseTable<T>>Type safe column family. | 
| interface  | ColumnPrefix<T extends BaseTable<T>>Used to represent a partially qualified column, where the actual column name
 will be composed of a prefix and the remainder of the column qualifier. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | DomainTableThe domain table has column family info. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | EntityTableThe entity table as column families info, config and metrics. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | FlowActivityTableThe flow activity table has column family info
 Stores the daily activity record for flows
 Useful as a quick lookup of what flows were
 running on a given day
 Example flow activity table record: | 
| class  | FlowRunTableThe flow run table has column family info
 Stores per flow run information
 aggregated across applications. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | SubApplicationTableThe sub application table has column families:
 info, config and metrics. | 
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