org.apache.hadoop.hdfs.server.namenode

接口 FSClusterStats

所有已知实现类:

FSNamesystem

public interface FSClusterStats

This interface is used for retrieving the load related statistics of the cluster.

方法概要

方法

限定符和类型	方法和说明
int	getTotalLoad() an indication of the total load of the cluster.
boolean	shouldAvoidStaleDataNodesForWrite() Indicate whether or not the cluster is now avoiding to use stale DataNodes for writing.

方法详细资料

getTotalLoad

int getTotalLoad()

an indication of the total load of the cluster.

返回:

a count of the total number of block transfers and block writes that are currently occuring on the cluster.

shouldAvoidStaleDataNodesForWrite

boolean shouldAvoidStaleDataNodesForWrite()

Indicate whether or not the cluster is now avoiding to use stale DataNodes for writing.

返回:

True if the cluster is currently avoiding using stale DataNodes for writing targets, and false otherwise.