• MapReduce Service

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  6. ALM-19000 HBase Service Unavailable

ALM-19000 HBase Service Unavailable

Description

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

Attribute

Alarm ID

Alarm Severity

Automatically Cleared

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

Possible Causes

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

Procedure

  1. Check the ZooKeeper service status.

    1. In the service list on MRS Manager, check whether the health status of ZooKeeper is Good.
      • If yes, go to 2.a.
      • If no, go to 1.b.
    2. In the alarm list, check whether alarm ALM-13000 ZooKeeper Service Unavailable exists.
      • If yes, go to 1.c.
      • If no, go to 2.a.
    3. Rectify the fault by following the steps provided in ALM-13000 ZooKeeper Service Unavailable.
    4. 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 service status.

    1. In the alarm list, check whether alarm ALM-14000 HDFS Service Unavailable exists.
    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 technical support engineers for help, detail see technical support.

Related Information

N/A