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Update src/backend/distributed/README.md 

Co-authored-by: Jelte Fennema-Nio <jelte.fennema@microsoft.com>
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Gürkan İndibay 2023-11-01 10:01:52 +03:00 committed by GitHub
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@ -1772,7 +1772,7 @@ Each field in the struct is documented in the comments within the `DistributeObj
- **Returning tasks for `preprocess` and `postprocess`**: Ensure that either `preprocess` or `postprocess` returns a list of "DDLJob"s. If both functions return non-empty lists, then you would get an assertion failure.
- **Generic `preprocess` and `postprocess` methods**: ``PreprocessAlterDistributedObjectStmt`` and ``PostprocessAlterDistributedObjectStmt`` are generic post and pre methods that is being used for some statements. Both of them are being used for distributed object operations.
- **Generic `preprocess` and `postprocess` methods**: ``PreprocessAlterDistributedObjectStmt`` and ``PostprocessAlterDistributedObjectStmt`` are generic post and pre methods that are used for some statements. Both of them are being used for distributed object operations.
- PreprocessAlterDistributedObjectStmt perform below operations perform qualify operation, deparse the statement and generate a task list. PostprocessAlterDistributedObjectStmt - calls ``EnsureAllObjectDependenciesExistOnAllNodes`` to propagate missing dependencies both on coordinator and worker.