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Fix a couple of bugs in recent parallelism-related commits.

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Commit 816e336f12 added the wrong error
check to async.c; sending restrictions is restricted to the leader,
not altogether unsafe.

Commit 3bd909b220 added ExecShutdownNode
to traverse the planstate tree and call shutdown functions, but made
a Gather node, the only node that actually has such a function, abort
the tree traversal, which is wrong.
This commit is contained in:
Robert Haas
2015-10-22 10:49:20 -04:00
parent 1a219fa15b
commit bde39eed0c
2 changed files with 4 additions and 6 deletions
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5
src/backend/commands/async.c
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@ -117,6 +117,7 @@
#include <unistd.h>
#include <signal.h>
#include "access/parallel.h"
#include "access/slru.h"
#include "access/transam.h"
#include "access/xact.h"
@ -544,8 +545,8 @@ Async_Notify(const char *channel, const char *payload)
Notification *n;
MemoryContext oldcontext;
if (IsInParallelMode())
elog(ERROR, "cannot send notifications during a parallel operation");
if (IsParallelWorker())
elog(ERROR, "cannot send notifications from a parallel worker");
if (Trace_notify)
elog(DEBUG1, "Async_Notify(%s)", channel);