Hi,
While working on the Asynchronous-MergeAppend patch, I noticed
$SUBJECT: "Wait or poll for async events." for the call to
ExecAppendAsyncEventWait. We call it with node->as_syncdone=true,
which makes it wait until at least one event occurs, as commented
above, so it never polls. Attached is a small patch for fixing that
comment.
Best regards,
Etsuro Fujita