[PATCH]: Not to invaldiate CatalogSnapshot for local invalidation messages

[Xiaoran Wang]

Hi hackers,


For local invalidation messages, there is no need to call
`InvalidateCatalogSnapshot` to set the CatalogSnapshot to NULL and
 rebuild it later. Instead, just update the CatalogSnapshot's `curcid`
 in `SnapshotSetCommandId`, this way can make the CatalogSnapshot work
well too.

 This optimization can reduce the overhead of rebuilding CatalogSnapshot
 after each command.


Best regards, xiaoran

0001-Not-to-invalidate-CatalogSnapshot-for-local-invalida.patch
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