org.apache.flink.runtime.persistence

接口 ResourceVersion<R>

类型参数:

R - Type of ResourceVersion

所有超级接口:

Comparable<R>, Serializable

所有已知实现类:

IntegerResourceVersion, StringResourceVersion

public interface ResourceVersion<R>
extends Comparable<R>, Serializable

Resource version for specific state handle on the underlying storage. The implementation also needs to implement the Comparable interface so that we could compare the resource versions.

方法概要

限定符和类型	方法和说明
boolean	isExisting() Check whether the state handle is existing.

从接口继承的方法 java.lang.Comparable

compareTo

方法详细资料

isExisting

boolean isExisting()

Check whether the state handle is existing.

返回:

true if state handle exists with current ResourceVersion on external storage. Or false it does not exist.