This new helper is intended to check a user's 2.4 databases, collections and documents for data which is no longer valid in 2.6. e.g., documents with index keys which are longer than the maximum size, collections without _id index, indexes with invalid specs, etc.
- is related to
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SERVER-8391 Pre-flight upgrade tool to check for changes breaking backwards compatibility or introducing regressions
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- Closed
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DOCS-2465 Comprehensive document about backward-breaking changes in v2.6
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- Closed
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