ClusterHeartBeatFailureMaster (openGauss JDBC Driver 5.0.0 API)

java.lang.Object
- org.postgresql.clusterhealthy.ClusterHeartBeat
- - org.postgresql.clusterhealthy.ClusterHeartBeatFailureMaster

```
public class ClusterHeartBeatFailureMaster
extends ClusterHeartBeat
```
If only one host in the cluster is down, and a new host is selected, the relationship between the faulty host and the new host needs to be maintained. When the faulty host recovers, it needs to be added to the node again for maintenance

Fields
Modifier and Type	Field and Description
`Map<HostSpec,HostSpec>`	`failureMap`

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`addFailureMaster(HostSpec hostSpec, HostSpec maseterNode)`
`void`	`clear()`
`Map<HostSpec,HostSpec>`	`getFailureMaster()`
`static ClusterHeartBeatFailureMaster`	`getInstance()`
`void`	`remove(HostSpec hostSpec)`
`void`	`run()` If the failed node is alive, join cache maintenance

public Map<HostSpec,HostSpec> failureMap

public static ClusterHeartBeatFailureMaster getInstance()

run
```
public void run()
```
If the failed node is alive, join cache maintenance

public void addFailureMaster(HostSpec hostSpec,
                             HostSpec maseterNode)

public Map<HostSpec,HostSpec> getFailureMaster()

public void remove(HostSpec hostSpec)

Class ClusterHeartBeatFailureMaster