Help Center/ MapReduce Service/ User Guide (Ankara Region)/ Alarm Reference/ ALM-43615 Time Spent on a Line Expansion Query Request in GraphBase Exceeds the Threshold

Updated on 2024-11-29 GMT+08:00

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ALM-43615 Time Spent on a Line Expansion Query Request in GraphBase Exceeds the Threshold

Alarm Description

The system checks the status of GraphBase service every 30 seconds. This alarm is generated when the time Spent on a line expansion query request on the GraphBase client from the GraphServer node exceeds the configured threshold.

Alarm Attributes

Alarm ID	Alarm Severity	Alarm Type	Service Type	Auto Cleared
43615	Major	Quality of service	GraphBase	Yes

Alarm Parameters

Type	Parameter	Meaning
Location Information	Source	Specifies the cluster for which the alarm is generated.
	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

If the requested content is too large or the request is frequently sent, the system is delayed. As a result, the communication between services may be abnormal.
The GraphBase service may be unavailable.

Possible Causes

The content requested by the client is too large or the request is frequently sent.
The threshold is too low.

Handling Procedure

Check the time spent on a real-time line expansion query request on the GraphServer node.

On the FusionInsight Manager homepage, choose O&M > Alarm > Threshold Configuration > Name of the desired cluster > GraphBase to view the threshold of Response Time for a Line Expansion Query on GraphServer.
On FusionInsight Manager, choose O&M > Alarm > Alarms and select the alarm whose ID is 43615. Check the role name and the IP address of the host where the alarm is generated in Location.
On the FusionInsight Manager homepage, choose Cluster > Name of the desired cluster > Service > GraphBase > Instance. Click the GraphServer where the alarm is reported. On the Dashboard page that is displayed, expand the drop-down list box in the upper right corner of the graph area, choose Customize > Response Time for a Line Expansion Query on GraphServer, and click OK to check whether the query time of the current path exceeds the threshold.
- If yes, go to 4.
- If no, go to 6.
On the FusionInsight Manager homepage, choose O&M > Alarm > Threshold Configuration > Name of the desired cluster > GraphBase to update the threshold of Response Time for a Line Expansion Query on GraphServer.
Wait for one minute and check whether the alarm is cleared.
- If yes, no further action is required.
- If no, go to 6.
Stop sending any requests for creating, deleting, updating, or querying relationships.
Wait for one minute and check whether the alarm is cleared.
- If yes, no further action is required.
- If no, go to 7.

Collect the fault information.

On the FusionInsight Manager homepage, choose O&M > Log > Download.
Expand the Service drop-down list, and select GraphBase for the target cluster.
Click in the upper right corner, and set Start Date and End Date for log collection to 30 minutes ahead of and after the alarm generation time, respectively. Then, click Download.
Contact O&M engineers and provide the collected logs.