[SERVER-32547] Mongo stalls while evicting dirty cache Created: 04/Jan/18 Updated: 09/Feb/18 Resolved: 18/Jan/18 |
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| Status: | Closed |
| Project: | Core Server |
| Component/s: | WiredTiger |
| Affects Version/s: | 3.6.1 |
| Fix Version/s: | None |
| Type: | Bug | Priority: | Major - P3 |
| Reporter: | Bob Potter | Assignee: | Kelsey Schubert |
| Resolution: | Duplicate | Votes: | 0 |
| Labels: | RF | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Attachments: |
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| Operating System: | ALL | ||||||||||||||||
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| Description |
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We are having an issue where mongo becomes unresponsive for minutes at a time. During this period it is emptying the dirty cache. The pattern we are seeing is that during normal operation performance is generally acceptable. However we have a large amount of data we want to delete from the cluster and starting that deletion process triggers the stalling behavior. Once this behavior starts it seems to reappear even after we've stopped the deletions. Restarting the server processes causes the problem to go away until we start the deletions again. I'm uncertain if this is related but we previously had an issue ( I have logs and diagnostic data I can add to the upload portal. Let me know if any other information would be helpful. |
| Comments |
| Comment by Kelsey Schubert [ 18/Jan/18 ] |
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Hi bpot, Thanks for uploading the diagnostic.data; it was invaluable to diagnosis this issue. The issue you are encountering is described in Kind regards, |
| Comment by Bob Potter [ 04/Jan/18 ] |
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Data is uploaded. |
| Comment by Kelsey Schubert [ 04/Jan/18 ] |
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Hi bpot, Thank you for opening a new ticket describing this issue. I've created a secure upload portal for you to provide the files. Thanks again, |