Help Center > > User Guide> Managing Active Clusters> Alarm Reference> ALM-28001 Spark Service Unavailable

ALM-28001 Spark Service Unavailable

Updated at: Mar 31, 2020 GMT+08:00


The system checks the Spark service status every 30 seconds. This alarm is generated when the Spark service is unavailable and is cleared when the Spark service recovers.


Alarm ID

Alarm Severity

Automatically Cleared








Specifies the service for which the alarm is generated.


Specifies the role for which the alarm is generated.


Specifies the host for which the alarm is generated.

Impact on the System

The Spark tasks submitted by users fail to be executed.

Possible Causes

Any of the following services is abnormal:

  • KrbServer
  • LdapServer
  • ZooKeeper
  • HDFS
  • Yarn
  • Hive


  1. Check whether service unavailability alarms exist in services that Spark depends on.

    1. On the MRS cluster details page, click Alarms.

      For MRS 1.8.10 or earlier, log in to MRS Manager and click Alarms.

    2. Check whether any of the following alarms exists in the alarm list:
      1. ALM-25500 KrbServer Service Unavailable
      2. ALM-25000 LdapServer Service Unavailable
      3. ALM-13000 ZooKeeper Service Unavailable
      4. ALM-14000 HDFS Service Unavailable
      5. ALM-18000 Yarn Service Unavailable
      6. ALM-16004 Hive Service Unavailable
      • If yes, go to 1.c.
      • If no, go to 2.
    3. Handle the alarms using the troubleshooting methods provided in the alarm help.

      After all the alarms are cleared, wait a few minutes and check whether this 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 personnel and send the collected log information.

Related Information


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