diff options
Diffstat (limited to 'src/backend/access/heap/README.tuplock')
| -rw-r--r-- | src/backend/access/heap/README.tuplock | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/backend/access/heap/README.tuplock b/src/backend/access/heap/README.tuplock index 31c52ad28f9..818cd7f9806 100644 --- a/src/backend/access/heap/README.tuplock +++ b/src/backend/access/heap/README.tuplock @@ -203,4 +203,6 @@ Inplace updates create an exception to the rule that tuple data won't change under a reader holding a pin. A reader of a heap_fetch() result tuple may witness a torn read. Current inplace-updated fields are aligned and are no wider than four bytes, and current readers don't need consistency across -fields. Hence, they get by with just fetching each field once. +fields. Hence, they get by with just fetching each field once. XXX such a +caller may also read a value that has not reached WAL; see +systable_inplace_update_finish(). |