[SERVER-47662] Make ClusterWriter only send databaseVersion if in FCV 4.4 Created: 20/Apr/20 Updated: 29/Oct/23 Resolved: 21/Apr/20 |
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| Status: | Closed |
| Project: | Core Server |
| Component/s: | Sharding |
| Affects Version/s: | None |
| Fix Version/s: | 4.4.0-rc3 |
| Type: | Bug | Priority: | Major - P3 |
| Reporter: | Janna Golden | Assignee: | Janna Golden |
| Resolution: | Fixed | Votes: | 0 |
| Labels: | sharding-wfbf-day | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Issue Links: |
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| Backwards Compatibility: | Fully Compatible | ||||
| Operating System: | ALL | ||||
| Sprint: | Sharding 2020-05-04 | ||||
| Participants: | |||||
| Linked BF Score: | 50 | ||||
| Description |
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In v4.4, we started attaching the database version to the write path. A v4.4 mongod can route a write to a v4.2 mongod as a part of a $merge and if this happens the v4.4 mongod will attach a database version. If the v4.2 mongod is stale, it will throw StaleDbVersion and should refresh. Note that in most cases, mongos is the one to route to a shard and it should always be at the same or a lower version than any mongod(s), so this is only a problem with a v4.4 mongod routes to a v4.2 mongod. |
| Comments |
| Comment by Githook User [ 21/Apr/20 ] |
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Author: {'name': 'jannaerin', 'email': 'golden.janna@gmail.com', 'username': 'jannaerin'}Message: |
| Comment by Esha Maharishi (Inactive) [ 20/Apr/20 ] |
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As part of this, we should also unblacklist the tests that were blacklisted in |