ALM-43012 Direct Memory Usage of the JDBCServer Process Exceeds the Threshold (For MRS 2.x or Earlier)

Description

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

Attribute

Parameters

Impact on the System

If the available JDBCServer process direct memory is insufficient, a memory overflow occurs and the service breaks down.

Possible Causes

The direct memory of the JDBCServer process is overused or the direct memory is inappropriately allocated.

Procedure

1. Check the direct memory usage.
   1. Go to the cluster details page and choose Alarms.
   2. Select the alarm whose Alarm ID is 43012 and view the IP address and role name of the instance in Location.
   3. Choose Components > Spark > Instance > JDBCServer (IP address of the instance for which the alarm is generated) > Customize > Direct Memory Statistics of the JDBCServer Process. Click OK to view the direct memory usage.
   4. Check whether the direct memory usage of the JDBCServer process has reached the threshold (90% of the maximum direct memory).
      • If yes, go to 1.e.
      • If no, go to 2.
   5. Choose Components > Spark > Service Configuration. Set Type to All and choose JDBCServer > Tuning. Increase the value of -XX:MaxDirectMemorySize in spark.driver.extraJavaOptions as required.
   6. Check whether the alarm is cleared.
      • If yes, no further action is required.
      • If no, go to 2.

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

Reference

None