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Type:
Improvement
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Resolution: Done
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Priority:
Critical - P2
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Affects Version/s: None
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Component/s: Index Maintenance, Storage
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Labels:None
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Major Change
Change index key format to no longer use BSON in WiredTiger.
Benefits include:
- much faster key comparison
- reduced storage size for indexes
- take much better advantage of WT key prefix compression
- no longer require custom collator, which means stock WT tools like repair work with no modification
As this is an on-disk format change, indexes created before this change with WT will no longer be usable without running:
mongod --storageEngine wiredTiger --repair
- is depended on by
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- Closed
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- is documented by
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DOCS-4664 Document user-facing changes related to WT index format change
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- Closed
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- is duplicated by
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SERVER-16762 Loss of type information for covered queries in WiredTiger
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- Closed
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- Closed
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- related to
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- Closed
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