diff options
| author | Robert Haas <rhaas@postgresql.org> | 2017-10-28 11:50:22 +0200 |
|---|---|---|
| committer | Robert Haas <rhaas@postgresql.org> | 2017-10-28 11:50:22 +0200 |
| commit | 11c1d555cebe8045a45bc0ee10d0673fad8d4895 (patch) | |
| tree | 9ee3821e92c396eb9aead80ff6ca464d74771cf8 /src/backend/executor/nodeIndexscan.c | |
| parent | 9f295c08f8776213ccb592de0c4f094738d6d841 (diff) | |
| download | postgresql-11c1d555cebe8045a45bc0ee10d0673fad8d4895.tar.gz postgresql-11c1d555cebe8045a45bc0ee10d0673fad8d4895.zip | |
Improve comments for parallel executor estimation functions.
The previous comment (which was copied as boilerplate from one file
to the next) implied that it was the executor node itself which was
being serialized, but that's not right. We're not serializing
the executor nodes; we're just allowing them to store some
additional information in DSM. Adjusts the comment to reflect this.
Discussion: http://postgr.es/m/CA+TgmoaHVinxG=3h6qBAsyV8xaDyQwbzK7YZnYfE8nJFMK1=FA@mail.gmail.com
Diffstat (limited to 'src/backend/executor/nodeIndexscan.c')
| -rw-r--r-- | src/backend/executor/nodeIndexscan.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/backend/executor/nodeIndexscan.c b/src/backend/executor/nodeIndexscan.c index 638b17b07cb..262008240db 100644 --- a/src/backend/executor/nodeIndexscan.c +++ b/src/backend/executor/nodeIndexscan.c @@ -1644,7 +1644,8 @@ ExecIndexBuildScanKeys(PlanState *planstate, Relation index, /* ---------------------------------------------------------------- * ExecIndexScanEstimate * - * estimates the space required to serialize indexscan node. + * Compute the amount of space we'll need in the parallel + * query DSM, and inform pcxt->estimator about our needs. * ---------------------------------------------------------------- */ void |