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Type:
Bug
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Resolution: Unresolved
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Priority:
Minor - P4
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None
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Affects Version/s: 100.11.0
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Component/s: mongorestore
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None
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Tools and Replicator
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49
Problem Statement/Rationale
A corrupted(but valid) archive that fails a mongorestore with a CRC mismatch passes a `–dryRun` without CRC mismatch.
Steps to Reproduce
Hexedit an archive format dump such that the documents remain valid, change a character.
14:24 $ diff -u <(xxd sampledata.archive) <(xxd sampledata.archive.b0rk ) --- /dev/fd/63 2025-02-26 14:25:22.672492325 -0500 +++ /dev/fd/62 2025-02-26 14:25:22.672492325 -0500 @@ -24419381,7 +24419381,7 @@ 1749c340: 656c 6c2e 204c 6174 6520 6368 6563 6b6f ell. Late checko 1749c350: 7574 2077 6173 2061 2076 6572 7920 7661 ut was a very va 1749c360: 6c75 6162 6c65 206f 7074 696f 6e20 616e luable option an -1749c370: 6420 6865 6c70 6564 2067 7265 6174 6c79 d helped greatly +1749c370: 6420 6865 6c70 6564 2067 7265 6174 6c78 d helped greatlx 1749c380: 2e00 0000 00ff ffff ff51 0000 0002 6462 .........Q....db 1749c390: 000e 0000 0073 616d 706c 655f 6169 7262 .....sample_airb 1749c3a0: 6e62 0002 636f 6c6c 6563 7469 6f6e 0013 nb..collection..
Dry run a restore using the archive
mongorestore --archive=sampledata.archive.b0rk --dryRun 2025-02-26T14:26:48.397-0500 preparing collections to restore from 2025-02-26T14:26:48.397-0500 dry run completed 2025-02-26T14:26:48.397-0500 0 document(s) restored successfully. 0 document(s) failed to restore.
Restore the archive
14:27 $ mongorestore --archive=sampledata.archive.b0rk --drop 2025-02-26T14:27:33.806-0500 preparing collections to restore from 2025-02-26T14:27:33.815-0500 reading metadata for sample_training.inspections from archive 'sampledata.archive.b0rk' 2025-02-26T14:27:33.815-0500 reading metadata for sample_mflix.sessions from archive 'sampledata.archive.b0rk' ... ... ... 2025-02-26T14:27:51.053-0500 Failed: corruption found in archive; ParserConsumer.HeaderBSON() ( CRC mismatch for namespace sample_airbnb.listingsAndReviews, 4644580959311783026!=2445464051694699444 ) 2025-02-26T14:27:51.053-0500 425367 document(s) restored successfully. 0 document(s) failed to restore.
Expected Results
The `–dryRun` should also CRC mismatch
Actual Results
`–dryRun` completes without error
Additional Notes
Any additional information that may be useful to include.