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  6. ALM-43006 Heap Memory Usage of the JobHistory Process Exceeds the Threshold

ALM-43006 Heap Memory Usage of the JobHistory Process Exceeds the Threshold

Description

The system checks the heap memory usage of the JobHistory process every 30 seconds. The alarm is generated when the heap memory usage of the JobHistory process exceeds the threshold (90% of the maximum memory).

Attribute

Alarm ID

Alarm Severity

Automatically Cleared

43006

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.

Impact on the System

Overhigh heap memory usage of the JobHistory process deteriorates JobHistory running performance or even causes OOM, which results in unavailable JobHistory process.

Possible Causes

The heap memory of the JobHistory process is overused or inappropriately allocated.

Procedure

  1. Check heap memory usage.

    1. On MRS Manager, click Alarm and select the alarm whose Alarm ID is 43006. Then check the IP address and role name of the instance in Location.
    2. On MRS Manager, choose Service > Spark > Instance and click the JobHistory for which the alarm is generated to enter the Instance Status page. Then choose Customize > Statistics for the heap memory of the JobHistory Process and click OK.
    3. Check whether the used heap memory of the JobHistory process reaches 90% of the maximum heap memory specified for JobHistory.
    4. On MRS Manager, choose Service > Spark > Service Configuration, and set Type to All. Choose JobHistory > Default. Increase the value of SPARK_DAEMON_MEMORY as required.
    5. 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. Select Spark from the Service drop-down list and click OK.
    3. Set Start Time for log collection to 10 minutes ahead of the alarm generation time and End Time to 10 minutes behind the alarm generation time, and click Download.
    4. Contact technical support engineers for help, detail see technical support.

Related Information

N/A