[SERVER-51108] Performance impact when enabling FCV 4.0 Created: 23/Sep/20 Updated: 03/Nov/20 Resolved: 30/Sep/20 |
|
| Status: | Closed |
| Project: | Core Server |
| Component/s: | None |
| Affects Version/s: | 4.0.15 |
| Fix Version/s: | None |
| Type: | Question | Priority: | Minor - P4 |
| Reporter: | Cristian Radan | Assignee: | Dmitry Agranat |
| Resolution: | Duplicate | Votes: | 0 |
| Labels: | None | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Issue Links: |
|
||||||||
| Participants: | |||||||||
| Description |
|
Hello, We have a quite large cluster (over 20 shards / multiple databases and collections / config database having over 1M documents in chunk collection) . We've observed impact during setting FCV to 4.0 on such a cluster while the whole cluster "freezes" when cache chunks are refreshed on each shard. ============ My understanding of the setting of FCV in case of 4.0 is:
Upgrade was performed from 3.6.10 to 4.0.15. Is there any way to mitigate the impact of enabling FCV on large cluster with lots of chunks? Thank you, Cristian
|
| Comments |
| Comment by Dmitry Agranat [ 30/Sep/20 ] |
|
Hi radan@adobe.com, Among other improvements, the most relevant ticket for the reported issue is SERVER-49544. I will link your report to SERVER-49544 and resolve as a duplicate. You can watch SERVER-49544 for updates. Regards, |
| Comment by Dmitry Agranat [ 24/Sep/20 ] |
|
Hi radan@adobe.com, thank you for the report. We do have some improvements in this area but these are aimed at 4.4. I am checking if any of these improvements are aimed to be backported to earlier versions. Thanks, |