Created attachment 1430554 [details]
log.tar.gz

Description of problem:
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When I tried to open Utilization Page for some random entities like Host, VM unexpected error occurring. It is not able to reproduce every time however I have seen this three times before. Mostly second time I am able to access entities utilization page.

Yes, it is one of the possibility that record not found for the specific chart, but I am able to access the same thing the second time. Also, we have functionality that 'Utilization' tab active only if metrics available (It should be disabled in case record not available). 


Version-Release number of selected component (if applicable):
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Version 5.9.2.4.20180501195858_35dc609



How reproducible:
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Not always (10-20% times, I guess!)


Steps to Reproduce:
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1. Navigate to VM or Host
2. Try to open Utilization Page (Monitoring > Utilization)


Actual results:
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It is raising an unexpected error.

ActiveRecord::RecordNotFound] Couldn't find MiqTask with 'id'=123

Expected results:
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It should not raise an unexpected error as I am able to access the same page the second time. 


Additional info:
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Attaching logs and snapshot of an unexpected error.