• MapReduce Service

mrs
  1. Help Center
  2. MapReduce Service
  3. User Guide
  4. MRS Manager Operation Guide
  5. Alarm Reference
  6. ALM-18003 NodeManager Unhealthy

ALM-18003 NodeManager Unhealthy

Description

The system checks the number of abnormal NodeManager nodes every 30 seconds and compares the number with the threshold. This alarm is generated when the value of the Unhealthy Nodes indicator exceeds the threshold and is cleared when the value is less than or equal to the threshold.

Attribute

Alarm ID

Alarm Severity

Automatically Cleared

18003

Major

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.

Trigger condition

Generates an alarm when the actual indicator value exceeds the specified threshold.

Impact on the System

  • The faulty NodeManager node cannot provide the Yarn service.
  • The number of containers decreases, so the cluster performance deteriorates.

Possible Causes

  • The hard disk space of the host where the NodeManager node resides is insufficient.
  • User omm does not have the permission to access a local directory on the NodeManager node.

Procedure

Contact technical support engineers for help, detail see technical support.

Related Information

N/A