[SERVER-53609] lastCommittedTransaction section causes frequent schema changes that limit FTDC retention Created: 06/Jan/21 Updated: 29/Oct/23 Resolved: 08/Jan/21 |
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| Status: | Closed |
| Project: | Core Server |
| Component/s: | Diagnostics, Replication |
| Affects Version/s: | None |
| Fix Version/s: | 4.9.0, 4.0.23, 4.4.4, 4.2.13 |
| Type: | Bug | Priority: | Major - P3 |
| Reporter: | Bruce Lucas (Inactive) | Assignee: | Jason Chan |
| 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 | ||||||||||||||||
| Backport Requested: |
v4.4, v4.2, v4.0
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| Sprint: | Repl 2021-01-11 | ||||||||||||||||
| Participants: | |||||||||||||||||
| Description |
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serverStatus.transactions.lastCommittedTransaction.writeConcern records the write concern of the last committed transaction. This subdocument does not have a fixed schema: it may be empty or not, and the w field may be either a string or a number. This causes frequent schema changes for FTDC, and that can severely limit FTDC retention. A record of the last committed transaction has limited diagnostic value, so the best solution may be to omit the entire lastCommittedTransaction section from FTDC. |
| Comments |
| Comment by Githook User [ 05/Feb/21 ] |
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Author: {'name': 'Jason Chan', 'email': 'jason.chan@mongodb.com', 'username': 'jasonjhchan'}Message: (cherry picked from commit 3e5fc29b410b4a0e999f190de5f035e3119f6565) |
| Comment by Githook User [ 04/Feb/21 ] |
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Author: {'name': 'Jason Chan', 'email': 'jason.chan@mongodb.com', 'username': 'jasonjhchan'}Message: (cherry picked from commit 3e5fc29b410b4a0e999f190de5f035e3119f6565) |
| Comment by Githook User [ 27/Jan/21 ] |
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Author: {'name': 'Jason Chan', 'email': 'jason.chan@mongodb.com', 'username': 'jasonjhchan'}Message: (cherry picked from commit 3e5fc29b410b4a0e999f190de5f035e3119f6565) |
| Comment by Ian Whalen (Inactive) [ 09/Jan/21 ] |
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Author: {'username': u'evrg-bot-webhook', 'name': u'Jason Chan', 'email': u'jason.chan@mongodb.com'}Message: |
| Comment by Judah Schvimer [ 06/Jan/21 ] |
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| Comment by Bruce Lucas (Inactive) [ 06/Jan/21 ] |
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I've assigned this to the replication team to start since that's where the section originated via |