[SERVER-36017] Balancer doesn't migrate chunks Created: 09/Jul/18 Updated: 14/Aug/18 Resolved: 09/Jul/18 |
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| Status: | Closed |
| Project: | Core Server |
| Component/s: | Sharding |
| Affects Version/s: | 3.6.5 |
| Fix Version/s: | None |
| Type: | Question | Priority: | Major - P3 |
| Reporter: | Changmin Keum [X] | Assignee: | Ramon Fernandez Marina |
| Resolution: | Done | Votes: | 0 |
| Labels: | None | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Participants: |
| Description |
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We have upgraded MongoDB sharded cluster from 2.0 to 3.6 in the past 6 months. And then, we enabled balancer, but no chunk migration occurred for 5 hours. After we enabled blancer, primary config server logged,
Our dev MongoDB cluster's primary config server logged "version 22" and it migrates chunks well. Currently, balancer is disabled. We have never used balancer before. So, chunks are quite unevenly distributed. I attached our server's stats. No jumbo chunk exists. Any guesses on what blocks balancer's chunk migration and possible solution?
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| Comments |
| Comment by Ramon Fernandez Marina [ 09/Jul/18 ] |
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Thanks for your report Changmin. Please note that the SERVER project is for reporting bugs or feature suggestions for the MongoDB server. For MongoDB-related support discussion please post on the mongodb-user group or Stack Overflow with the mongodb tag, where your question will reach a larger audience. A question like this involving more discussion would be best posted on the mongodb-user group. See also our Technical Support page for additional support resources. Regards, |