Update obsolete sentence in README.parallel.

Since 9.6, heavyweight locking is not an abstract and unhandled concern of the parallel machinery, but rather something to which we have a specific approach.
8 years ago · 28e04155f1
parent 2badb5afb8
commit 28e04155f1
1 changed files with 3 additions and 3 deletions
--- a/src/backend/access/transam/README.parallel
+++ b/src/backend/access/transam/README.parallel
@ -125,9 +125,9 @@ worker.  This includes:
  - State related to pending REINDEX operations, which prevents access to
    an index that is currently being rebuilt.

-To prevent undetected or unprincipled deadlocks when running in parallel mode,
-this could should eventually handle heavyweight locks in some way.  This is
-not implemented yet.
+To prevent unprincipled deadlocks when running in parallel mode, this code
+also arranges for the leader and all workers to participate in group
+locking.  See src/backend/storage/lmgr/README for more details.

 Transaction Integration
 =======================