io.ray.streaming.state.strategy

Class MVStateStoreManager<V>

java.lang.Object

io.ray.streaming.state.strategy.AbstractStateStoreManager<V>

io.ray.streaming.state.strategy.MVStateStoreManager<V>

All Implemented Interfaces:

StateStoreManager

public class MVStateStoreManager<V>
extends AbstractStateStoreManager<V>

This class define the multi-version store strategy, which leverages external storage's mvcc.

Field Summary

Fields inherited from class io.ray.streaming.state.strategy.AbstractStateStoreManager

frontStore, keyGroupIndex, kvStore, middleStore

Constructor Summary

Constructors

Constructor and Description
MVStateStoreManager(KeyValueStore<String,Map<Long,byte[]>> kvStore)

Method Summary

Modifier and Type	Method and Description
void	ackCommit(long checkpointId)
void	commit(long checkpointId) The commit method is used for persistent, and can be used in another thread to reach async state commit.
void	finish(long checkpointId) The finish method is used when the batched data is all saved in state.
V	get(long checkpointId, String key)
void	put(long checkpointId, String k, V v)
void	rollBack(long checkpointId) The rollback method is used for recovering the checkpoint.

Methods inherited from class io.ray.streaming.state.strategy.AbstractStateStoreManager

ackCommit, close, setKeyGroupIndex, toBytes, toStorageRecord

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MVStateStoreManager

public MVStateStoreManager(KeyValueStore<String,Map<Long,byte[]>> kvStore)

Method Detail

finish

public void finish(long checkpointId)

Description copied from interface: StateStoreManager

The finish method is used when the batched data is all saved in state. Normally, serialization job is done here.

commit

public void commit(long checkpointId)

Description copied from interface: StateStoreManager

The commit method is used for persistent, and can be used in another thread to reach async state commit. Normally, data persistent is done here.

rollBack

public void rollBack(long checkpointId)

Description copied from interface: StateStoreManager

The rollback method is used for recovering the checkpoint.

get

public V get(long checkpointId,
             String key)

Specified by:

get in class AbstractStateStoreManager<V>

put

public void put(long checkpointId,
                String k,
                V v)

Overrides:

put in class AbstractStateStoreManager<V>

ackCommit

public void ackCommit(long checkpointId)

Specified by:

ackCommit in class AbstractStateStoreManager<V>