Help Center > > User Guide> MRS Manager Operation Guide> Alarm Reference (Applicable to MRS 2.x or Earlier)> ALM-19000 HBase Service Unavailable

ALM-19000 HBase Service Unavailable

Updated at: Mar 25, 2021 GMT+08:00

Description

The alarm module checks the HBase service status every 30 seconds. This alarm is generated when the HBase service is unavailable.

This alarm is cleared when the HBase service recovers.

Attribute

Alarm ID

Alarm Severity

Auto Clear

19000

Critical

Yes

Parameters

Parameter

Description

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

Operations cannot be performed, such as reading or writing data and creating tables.

Possible Causes

  • ZooKeeper is abnormal.
  • HDFS is abnormal.
  • HBase is abnormal.
  • The network is abnormal.

Procedure

  1. Check the ZooKeeper status.

    1. Go to the MRS cluster details page and click Components.

      For MRS 1.8.10 or earlier, log in to MRS Manager and click Services.

    2. In the service list, check whether the health status of ZooKeeper is Good.
      • If yes, go to 2.a.
      • If no, go to 1.c.
    3. In the alarm list, check whether the alarm ALM-13000 ZooKeeper Service Unavailable exists.
      • If yes, go to 1.d.
      • If no, go to 2.a.
    4. Rectify the fault by following the steps provided in ALM-13000 ZooKeeper Service Unavailable.
    5. Wait several minutes and check whether the alarm is cleared.
      • If yes, no further action is required.
      • If no, go to 2.a.

  2. Check the HDFS status.

    1. On MRS Manager, check whether the ALM-14000 HDFS Service Unavailable alarm is reported.
      • If yes, go to 2.b.
      • If no, go to 3.
    2. Rectify the fault by following the steps provided in ALM-14000 HDFS Service Unavailable.
    3. Wait several minutes and check whether the alarm is cleared.

  3. Collect fault information.

    1. On MRS Manager, choose System > Export Log.
    2. Contact the O&M personnel and send the collected logs.

Reference

None

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