Max. restarts reached for probe 'prediction_engine'

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Article ID: 206893

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Updated On:

Products

DX Infrastructure Management

Issue/Introduction

prediction_engine probe will not start up.

prediction_engine version 9.20

error: 

Controller: Max. restarts reached for probe 'prediction_engine' (command = <startup java>)

2021-01-11 13:00:15.784 [      main]  INFO  nimbus.NimProbe - [ Stopped ]
2021-01-11 13:00:15.784 [      main]  INFO  analytics.MapDbHashMap - Closing ...
2021-01-11 13:00:15.805 [      main]  INFO  analytics.MapDbHashSet - Closing ...
Jan 11 13:01:24:111 [13780] Controller: Max. restarts reached for probe 'prediction_engine' (command = <startup java)>
Jan 11 16:42:03:068 [13780] Controller: Max. restarts reached for probe 'prediction_engine' (command = <startup java)>

Cause

- Unknown

Environment

Release : 9.2.0

Component : UIM - PREDICTION_ENGINE

Resolution

1. Deactivated prediction_engine
2. Rt-click delete to delete it
3. Rename/remove probe folder
4. Redeploy prediction_engine
5. Restart robot

Additional Information

prediction_engine and baseline_engine were not even being used, baseline_engine starts up fine. start_after is set in the controller.cfg, but even after a fresh reinstall of prediction_engine or but the baseline and prediction_engine it wont stay up. Its gets a PID, drops the PID then goes into max restarts loop.

There was nothing in the baseline_engine cache. Nor are the prediction_engine or baseline_engine being used. There is not a single message in either queue. But it has been running for a long time and just recently stopped working.

Jan 12 17:28:28:099 [13780] 3 Controller: portFind prediction_engine
Jan 12 17:28:28:099 [13780] 3 Controller: portFind prediction_engine

but no obvious errors.