Resovle the problem that load snapshot failure after add statement "alter table column data type" #17004
+25
−12
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
…d preAlterColumn in these old snapshot data. Due to all data involved tableNode are stored consecutively in the snapshot file. The content of each element during serialization is of variable length, making it impossible to identify the information of preAlteredColumn. So increment a identify to find the position that can read preAlterColumn.
jt2594838
approved these changes
Jan 8, 2026
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
The key cause by load snapshot failure is that nonclude bytes involved preAlterColumn in these old snapshot data. Due to all data involved tableNode are stored consecutively in the snapshot file. The content of each element during serialization is of variable length, making it impossible to identify the information of preAlteredColumn. So increment a identify to find the position that can read preAlterColumn.
