use Weak ptr to break catalog list <> info schema cyclic reference
#681
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alamb
approved these changes
Jul 6, 2021
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Thank you @crepererum
In case anyone is interested, I drew a picture of the cycle:
┌───────────────────────┐
│ │
│ MemoryCatalogList │◀───┐
│ │ │
└───────────────────────┘ │
│ │
│ │
▼ │
┌────────────────────────────┐ │
│ │ │
│CatalogWithInformationSchema│──┘
│ │
└────────────────────────────┘
FWIW this was causing us trouble in IOx because our main object implements SchemaProvider and thus was kept around by this cycle
andygrove
added a commit
to andygrove/datafusion
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this pull request
Jan 31, 2025
* Unify IF and CASE expressions * revert test changes * fix
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Fixes #680.