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Fix backend DCB writeq throttling

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The callbacks iterated over all threads when only the local ones must be
iterated. This prevents a deadlock from occurring when multiple threads
start throttling at the same time.

Also fixed the gwbuf_append debug assertion.
This commit is contained in:
Markus Mäkelä
2018-10-19 13:44:21 +03:00
parent 4be5d9267d
commit f461ab428e
2 changed files with 5 additions and 4 deletions
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4
server/core/dcb.cc
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@ -3768,11 +3768,11 @@ static int downstream_throttle_callback(DCB* dcb, DCB_REASON reason, void* userd
{
if (reason == DCB_REASON_HIGH_WATER)
{
dcb_foreach(backend_dcb_remove_func, dcb->session);
dcb_foreach_local(backend_dcb_remove_func, dcb->session);
}
else if (reason == DCB_REASON_LOW_WATER)
{
dcb_foreach(backend_dcb_add_func, dcb->session);
dcb_foreach_local(backend_dcb_add_func, dcb->session);
}
return 0;