[SERVER-46858] [4.2] Start WT in read only mode if the 'recoverToOplogTimestamp' flag is missing for queryable backup Created: 13/Mar/20 Updated: 29/Oct/23 Resolved: 17/Mar/20 |
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| Status: | Closed |
| Project: | Core Server |
| Component/s: | Storage |
| Affects Version/s: | 4.2.4 |
| Fix Version/s: | 4.2.5 |
| Type: | Bug | Priority: | Major - P3 |
| Reporter: | Gregory Wlodarek | Assignee: | Gregory Wlodarek |
| Resolution: | Fixed | Votes: | 0 |
| Labels: | None | ||
| 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: | Execution Team 2020-03-23 | ||||
| Participants: | |||||
| Description |
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This only affects 4.2.4 binaries running with FCV 4.0. With FCV 4.0, we don't use WiredTiger checkpoints for backups. But when we start-up with queryable backup mode, WiredTiger will use the callbacks for the writeable API implemented in 4.2.4 when it shouldn't.
On 4.2.4 binaries with FCV 4.0, the recommended workaround is to add these options to the config:
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| Comments |
| Comment by Githook User [ 17/Mar/20 ] |
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Author: {'name': 'Gregory Wlodarek', 'email': 'gregory.wlodarek@mongodb.com', 'username': 'GWlodarek'}Message: |