Help Center/ MapReduce Service/ User Guide/ Alarm Reference (Applicable to MRS 3.x)/ ALM-45475 A Single Replica Exists in the Kudu Data Table
Updated on 2024-05-07 GMT+08:00

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

Alarm Description

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 Attributes

Alarm ID

Alarm Severity

Auto Cleared

45475

Major

Yes

Alarm Parameters

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.

Impact on the System

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

Handling Procedure

  1. 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.

  1. On FusionInsight Manager, choose O&M. In the navigation pane on the left, choose Log > Download.
  2. Expand the Service drop-down list, and select Kudu for the target cluster.
  3. 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.
  4. Contact O&M personnel and provide the collected logs.

Alarm Clearance

This alarm is automatically cleared after the fault is rectified.

Related Information

None