Package | Description |
---|---|
org.apache.flink.runtime.state | |
org.apache.flink.runtime.state.filesystem | |
org.apache.flink.runtime.state.memory | |
org.apache.flink.streaming.runtime.operators |
This package contains the operators that perform the stream transformations.
|
org.apache.flink.streaming.runtime.tasks |
This package contains classes that realize streaming tasks.
|
Modifier and Type | Interface and Description |
---|---|
interface |
KvStateSnapshot<K,N,S extends State,SD extends StateDescriptor<S,?>,Backend extends AbstractStateBackend>
This class represents a snapshot of the
KvState , taken for a checkpoint. |
interface |
StateHandle<T>
StateHandle is a general handle interface meant to abstract operator state fetching.
|
interface |
StreamStateHandle
A state handle that produces an input stream when resolved.
|
Modifier and Type | Class and Description |
---|---|
class |
AsynchronousKvStateSnapshot<K,N,S extends State,SD extends StateDescriptor<S,?>,Backend extends AbstractStateBackend>
KvStateSnapshot that asynchronously materializes the state that it represents. |
class |
AsynchronousStateHandle<T>
StateHandle that can asynchronously materialize the state that it represents. |
class |
LocalStateHandle<T extends Serializable>
A StateHandle that includes the operator states directly.
|
Modifier and Type | Class and Description |
---|---|
class |
AbstractFileStateHandle
Base class for state that is stored in a file.
|
class |
AbstractFsStateSnapshot<K,N,SV,S extends State,SD extends StateDescriptor<S,?>>
A snapshot of a heap key/value state stored in a file.
|
class |
FileSerializableStateHandle<T extends Serializable>
A state handle that points to state stored in a file via Java Serialization.
|
class |
FileStreamStateHandle
A state handle that points to state in a file system, accessible as an input stream.
|
static class |
FsFoldingState.Snapshot<K,N,T,ACC> |
static class |
FsListState.Snapshot<K,N,V> |
static class |
FsReducingState.Snapshot<K,N,V> |
static class |
FsValueState.Snapshot<K,N,V> |
Modifier and Type | Class and Description |
---|---|
class |
AbstractMemStateSnapshot<K,N,SV,S extends State,SD extends StateDescriptor<S,?>>
A snapshot of a
MemValueState for a checkpoint. |
class |
ByteStreamStateHandle
A state handle that contains stream state in a byte array.
|
static class |
MemFoldingState.Snapshot<K,N,T,ACC> |
static class |
MemListState.Snapshot<K,N,V> |
static class |
MemReducingState.Snapshot<K,N,V> |
static class |
MemValueState.Snapshot<K,N,V> |
class |
SerializedStateHandle<T extends Serializable>
A state handle that represents its state in serialized form as bytes.
|
Modifier and Type | Class and Description |
---|---|
static class |
GenericWriteAheadSink.ExactlyOnceState
This state is used to keep a list of all StateHandles (essentially references to past OperatorStates) that were
used since the last completed checkpoint.
|
Modifier and Type | Class and Description |
---|---|
class |
StreamTaskStateList
List of task states for a chain of streaming tasks.
|
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