Help Center/ MapReduce Service/ User Guide/ MRS Cluster O&M/ MRS Cluster Alarm Handling Reference/ ALM-12050 Write Throughput Rate Exceeds the Threshold (For MRS 2.x or Earlier)
Updated on 2024-09-23 GMT+08:00
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ALM-12050 Write Throughput Rate Exceeds the Threshold (For MRS 2.x or Earlier)

Description

The system checks the write throughput rate every 30 seconds. This alarm is generated when the write throughput rate exceeds the threshold (the default threshold is 80%) for multiple times (the default value is 5).

You can change the threshold by choosing System > Threshold Configuration > Device > Host > Network Writing > Network Write Throughput Rate > Write Throughput Rate.

If the hit number is 1, this alarm is cleared when the write throughput rate is less than or equal to the threshold. If the hit number is greater than 1, this alarm is cleared when the write throughput rate is less than or equal to 90% of the threshold.

Attribute

Alarm ID

Alarm Severity

Auto Clear

12050

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.

NetworkCardName

Specifies the network port for which the alarm is generated.

Trigger Condition

Specifies the threshold for triggering the alarm.

Impact on the System

The service system runs abnormally or is unavailable.

Possible Causes

  • The alarm threshold is improperly configured.
  • The network port rate does not meet service requirements.

Procedure

Check whether the threshold is set properly.

  1. Log in to MRS Manager and check whether the threshold (configurable, 80% by default) is appropriate.

    • If yes, go to 4.
    • If no, go to 2.

  2. Choose System > Threshold Configuration > Device > Host > Network Writing > Network Write Throughput Rate > Write Throughput Rate to change the alarm threshold based on the actual service usage.
  3. Wait 5 minutes and check whether the alarm is cleared.

    • If yes, no further action is required.
    • If no, go to 4.

Check whether the network port rate meets the requirements.

  1. In the real-time alarm list, click the alarm. In the Alarm Details area, obtain the IP address and network port of the host for which the alarm is generated.
  2. Use PuTTY to log in to the host for which the alarm is generated as user root.
  3. Run the ethtool network port name command to check the maximum network port rate Speed.

    In a VM environment, you may fail to obtain the network port rate by running commands. You are advised to contact the system administrator to check whether the network port rate meets the requirements.

  4. If the write throughput rate exceeds the threshold, contact the system administrator to increase the network port rate.
  5. Check whether the alarm is cleared.

    • If yes, no further action is required.
    • If no, go to 9.

  6. Collect fault information.

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

Reference

None