Qlik Sense Engine service restarting Frequently on every node (1 central and 3 nodes)

[nilesh007]

Hi Community,

Facing error, a frequent restart of the qlik engine service usually during month-end activities occurs a lot . Manufacturing domain in working for. Although this restart of engine service doesn't impact my ongoing running task i.e. scheduler service remains unimpacted but processing of task is delayed. 

How to optimize this frequent start and why it is happening frequently?

Any help appreciated.

Regards,

Nilesh

[Øystein_Kolsrud]

Are you sure the engine has actually restarted, or is it just that the QMC is reporting it as "running since..."? You can verify this by calling the engine healthcheck endpoint:

https://help.qlik.com/en-US/sense-developer/May2022/Subsystems/EngineAPI/Content/Sense_EngineAPI/Get...

The returned value contains a field named "started" which contains a timestamp indicating when the service was started.

The repository bases it's "running since" value on a websocket ping mechanism. Sometimes, especially during heavy engine load, pings will fail temporarily and the QMC will then report the engine as being down for a brief period.