Optimization for Unstable HDFS Network

Scenario

Clients probably encounter running errors when the network is not stable. Users can adjust the following parameter values to improve the running efficiency.

Configuration Description

Go to the All Configurations page of HDFS and enter a parameter name in the search box by referring to Modifying Cluster Service Configuration Parameters.

**Table 1** Parameter description
Parameter	Description	Default Value
ha.health-monitor.rpc-timeout.ms	Timeout interval during the NameNode health check performed by ZKFC. Increasing this value can prevent dual active NameNodes and reduce the probability of application running exceptions on clients. Unit: millisecond. Value range: 30,000 to 3,600,000	180,000
ipc.client.connect.max.retries.on.timeouts	Number of retry times when the socket connection between a server and a client times out. Value range: 1 to 256	45
ipc.client.connect.timeout	Timeout interval of the socket connection between a client and a server. Increasing the value of this parameter increases the timeout interval for setting up a connection. Unit: millisecond. Value range: 1 to 3,600,000	20,000