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Correct a comment on logtape.c's leader tape.

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randomAccess parallel tuplesorts are disallowed because the leader would
try to write to its own leader tape, not because the leader would try to
write to a worker tape directly.

Cleanup from commit 9da0cc3528.
This commit is contained in:
Peter Geoghegan 2018-06-26 11:16:20 -07:00
parent cdc2693a11
commit aefb0a382c
1 changed files with 1 additions and 1 deletions
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src/backend/utils/sort/logtape.c
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@ -471,7 +471,7 @@ ltsConcatWorkerTapes(LogicalTapeSet *lts, TapeShare *shared,
* Compute number of hole blocks so that we can later work backwards, and * Compute number of hole blocks so that we can later work backwards, and
* instrument number of physical blocks. We don't simply use physical * instrument number of physical blocks. We don't simply use physical
* blocks directly for instrumentation because this would break if we ever * blocks directly for instrumentation because this would break if we ever
* subsequently wrote to worker tape. * subsequently wrote to the leader tape.
* *
* Working backwards like this keeps our options open. If shared BufFiles * Working backwards like this keeps our options open. If shared BufFiles
* ever support being written to post-export, logtape.c can automatically * ever support being written to post-export, logtape.c can automatically