ALM-45475 A Single Replica Exists in the Kudu Data Table

The system checks the replica status of the Kudu data table. This alarm is generated when a single replica is detected in the Kudu data table.

This alarm is cleared when all Kudu data tables have multiple replicas or no data.

Alarm ID	Alarm Severity	Auto Cleared
45475	Major	Yes

Type	Parameter	Description
Location Information	Source	Specifies the cluster for which the alarm was generated.
	ServiceName	Specifies the service for which the alarm was generated.
	RoleName	Specifies the role for which the alarm was generated.
	HostName	Specifies the host for which the alarm was generated.

If a hardware fault occurs, for example, a slow disk or a faulty disk, the Kudu data table may lose data.

Run the following command to query details about each data table and check for the table with only one replica:

kudu table describe {Kudu master address (separated by commas)} {Data table name}

You can view details about the table with only one replica on the Kudu web UI.

Collect fault information.

On FusionInsight Manager, choose O&M. In the navigation pane on the left, choose Log > Download.
Expand the Service drop-down list, and select Kudu for the target cluster.
Click the edit icon in the upper right corner, and set Start Date and End Date for log collection to 10 minutes ahead of and after the alarm generation time, respectively. Then, click Download.
Contact O&M personnel and provide the collected logs.