| Package | Description |
|---|---|
| org.apache.hadoop.hdfs.server.federation.metrics |
Report metrics for Router-based Federation.
|
| org.apache.hadoop.hdfs.server.federation.resolver |
The resolver package contains indepedent data resolvers used in HDFS
federation.
|
| org.apache.hadoop.hdfs.server.federation.resolver.order |
A federated location can be resolved to multiple subclusters.
|
| org.apache.hadoop.hdfs.server.federation.router |
The router package includes the core services for a HDFS federation router.
|
| org.apache.hadoop.hdfs.server.federation.store |
The federation state store tracks persistent values that are shared between
multiple routers.
|
| org.apache.hadoop.hdfs.server.federation.store.driver |
The state store uses modular data storage classes derived from
StateStoreDriver to handle querying, updating and deleting data records.
|
| org.apache.hadoop.hdfs.server.federation.store.driver.impl |
Implementations of state store data providers/drivers.
|
| org.apache.hadoop.hdfs.server.federation.store.impl |
Contains implementations of the state store API interfaces.
|
| Class | Description |
|---|---|
| StateStoreService |
A service to initialize a
StateStoreDriver and maintain the connection to the data store. |
| Class | Description |
|---|---|
| MountTableStore |
Management API for the HDFS mount table information stored in
MountTable records. |
| StateStoreCache |
Interface for a cached copy of the State Store.
|
| StateStoreService |
A service to initialize a
StateStoreDriver and maintain the connection to the data store. |
| Class | Description |
|---|---|
| MembershipStore |
Management API for NameNode registrations stored in
MembershipState records. |
| Class | Description |
|---|---|
| RouterStore |
Management API for
RouterState records in the state store. |
| StateStoreService |
A service to initialize a
StateStoreDriver and maintain the connection to the data store. |
| StateStoreUnavailableException |
Thrown when the state store is not reachable or available.
|
| Class | Description |
|---|---|
| CachedRecordStore |
Record store that takes care of caching the records in memory.
|
| RecordStore |
Store records in the State Store.
|
| StateStoreCache |
Interface for a cached copy of the State Store.
|
| StateStoreService |
A service to initialize a
StateStoreDriver and maintain the connection to the data store. |
| StateStoreUnavailableException |
Thrown when the state store is not reachable or available.
|
| Class | Description |
|---|---|
| StateStoreUnavailableException |
Thrown when the state store is not reachable or available.
|
| Class | Description |
|---|---|
| StateStoreUnavailableException |
Thrown when the state store is not reachable or available.
|
| Class | Description |
|---|---|
| CachedRecordStore |
Record store that takes care of caching the records in memory.
|
| DisabledNameserviceStore |
State store record to track disabled name services.
|
| MembershipStore |
Management API for NameNode registrations stored in
MembershipState records. |
| MountTableStore |
Management API for the HDFS mount table information stored in
MountTable records. |
| RecordStore |
Store records in the State Store.
|
| RouterStore |
Management API for
RouterState records in the state store. |
| StateStoreCache |
Interface for a cached copy of the State Store.
|
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