io.cdap.delta.store

Class StateStoreMigrator

java.lang.Object

io.cdap.delta.store.StateStoreMigrator

public class StateStoreMigrator
extends Object

A util class to transfer any state store data present on HCFS path by an old pipeline with HCF based state store into SQL based state store on the first pipeline run after upgrade.

Field Summary

Fields

Modifier and Type	Field and Description
protected HCFSStateStore	hcfsStateStore
protected DeltaWorkerId	previousId

Constructor Summary

Constructors

Constructor and Description
StateStoreMigrator(String hcfsStateStorePath, DeltaWorkerId currentId, StateStore remoteStateStore)

Method Summary

Modifier and Type	Method and Description
boolean	perform()

Methods inherited from class java.lang.Object

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

Field Detail

hcfsStateStore

protected HCFSStateStore hcfsStateStore

previousId

protected DeltaWorkerId previousId

Constructor Detail

StateStoreMigrator

public StateStoreMigrator(String hcfsStateStorePath,
                          DeltaWorkerId currentId,
                          StateStore remoteStateStore)

Method Detail

perform

public boolean perform()
                throws IOException

Throws:

IOException