fix: correct the order of sync meta snapshot and clean logs in wal on kafka #643
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Which issue does this PR close?
Closes #
Rationale for this change
Now, the order of sync meta snapshot and clean logs in wal onk kafka is unreasonable.
We must ensure that the meta snapshot has been persisted successfully before cleaning the related logs.
What changes are included in this PR?
See title.
Are there any user-facing changes?
None.
How does this change test
Test by ut.