This was first discovered by jonathan.abrahams in the linked ticket.
When we do an insert, a DatabaseCatalogEntry is created implicitly before validating the namespace string (batch_executor.cpp). The insert would fail after the DatbaseCatalogEntry is created.
For KVEngines, creating a DatabaseCatalogEntry is basically a noop (kv_storage_engine.cpp), so no harm is done.
For mmapv1, a data file with an invalid name would be created in (mmap_v1_database_catalog_entry.cpp). Subsequent calls to show dbs would require getting the list of data files and this invalid one will show up.
- is documented by
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DOCS-9518 Docs for SERVER-22577: mmapv1 should not allow creation of database names containing $
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- Closed
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- related to
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SERVER-21696 applyOps with invalid ns field triggers fassert on MMAP
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- Closed
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- Closed
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