Description
The system checks whether HBase directories and files exist on the HDFS every 120 seconds. This alarm is generated when the system detects that the files or directories do not exist. This alarm is cleared when the files or directories are restored.
The HBase directories and files are as follows:
- Directory of the namespace hbase on the HDFS
- hbase.version file
- Directory of the table hbase:meta on the HDFS, .tableinfo file, and .regioninfo file
- Directory of the table hbase:namespace on the HDFS, .tableinfo file, and .regioninfo file
- Directory of the table hbase:hindex on the HDFS, .tableinfo file, and .regioninfo file
- Directory of the hbase:acl table on the HDFS, .tableinfo, and .regioninfo file (This table does not exist in the common mode cluster by default.)
If the multi-instance function is enabled in the cluster and multiple HBase service instances are installed, you need to determine the HBase service instance where the alarm is generated based on the value of ServiceName in Location. For example, if the HBase1 service is unavailable, ServiceName=HBase1 is displayed in Location, and the operation object in the procedure needs to be changed from HBase to HBase1.
Attribute
Alarm ID |
Alarm Severity |
Automatically Cleared |
|---|---|---|
19012 |
Critical |
Yes |
Parameters
Name |
Meaning |
|---|---|
Source |
Specifies the cluster for which the alarm is generated. |
ServiceName |
Specifies the service for which the alarm is generated. |
RoleName |
Specifies the role for which the alarm is generated. |
HostName |
Specifies the host for which the alarm is generated. |
Impact on the System
The HBase service fails to restart or start.
Possible Causes
Files or directories on the HDFS are missing.
Procedure
Locate the alarm cause.
- On the FusionInsight Manager, choose O&M > Alarm > Alarms. Click this alarm and check whether Alarm Cause indicates unknown errors.
- On the FusionInsight Manager home page, choose O&M > Backup and Restoration > Backup Management. Check whether there are success records of the backup task named default or other HBase metadata backup tasks that have been successfully executed.
- Use the latest backup metadata to restore the metadata of the HBase service.
Collect fault information.
- On the FusionInsight Manager page of the active and standby clusters, choose O&M > Log > Download.
- In the Service area, select faulty HBase services in the required cluster.
- Click
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 the O&M personnel and send the collected logs.
Alarm Clearing
After the fault is rectified, the system automatically clears this alarm.
Related Information
None