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Update obsolete sentence in README.parallel.

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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.
This commit is contained in:
Robert Haas 2018-01-23 11:20:18 -05:00
parent 2badb5afb8
commit 28e04155f1
1 changed files with 3 additions and 3 deletions
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src/backend/access/transam/README.parallel
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@ -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
=======================