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| author | Robert Haas <rhaas@postgresql.org> | 2018-01-23 11:20:18 -0500 |
|---|---|---|
| committer | Robert Haas <rhaas@postgresql.org> | 2018-01-23 11:22:47 -0500 |
| commit | 28e04155f17cabda7a18aee31d130aa10e25ee86 (patch) | |
| tree | 65f7eed3841bab208c141d3482adf2cfd94ae8e7 /src | |
| parent | 2badb5afb89cd569500ef7c3b23c7a9d11718f2f (diff) | |
| download | postgresql-28e04155f17cabda7a18aee31d130aa10e25ee86.tar.gz postgresql-28e04155f17cabda7a18aee31d130aa10e25ee86.zip | |
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.
Diffstat (limited to 'src')
| -rw-r--r-- | src/backend/access/transam/README.parallel | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/backend/access/transam/README.parallel b/src/backend/access/transam/README.parallel index 32994719e3b..f09a5806345 100644 --- 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 ======================= |