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  6. ALM-14008 HDFS DataNode Memory Usage Exceeds the Threshold

ALM-14008 HDFS DataNode Memory Usage Exceeds the Threshold

Description

The system checks the HDFS DataNode memory usage every 30 seconds and compares it with the threshold. This alarm is generated when the HDFS DataNode memory usage exceeds the threshold and is cleared when it is less than or equal to the threshold.

Attribute

Alarm ID

Alarm Severity

Automatically Cleared

14007

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 HDFS DataNode memory usage is too high, which affects the data read/write performance of the HDFS.

Possible Causes

The HDFS DataNode memory is insufficient.

Procedure

  1. Delete unnecessary files.

    1. Use the client on the cluster node and run the hdfs dfs -rm -r file or directory command to delete unnecessary files.
    2. Wait 5 minutes and check whether the alarm is cleared.
      • If yes, no further action is required.
      • If no, go to Step 2.

  2. 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