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Server weight is taken into account for LEAST_BEHIND_MASTER selection criteria

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Server weight is taken into account for LEAST_BEHIND_MASTER selection
criteria
This commit is contained in:
MassimilianoPinto 2017-01-09 15:09:46 +01:00
parent b507976414
commit a60a0032d1
1 changed files with 16 additions and 1 deletions
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17
server/modules/routing/readwritesplit/rwsplit_select_backends.c
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@ -364,7 +364,22 @@ static int bref_cmp_behind_master(const void *bref1, const void *bref2)
SERVER_REF *b1 = ((backend_ref_t *)bref1)->ref;
SERVER_REF *b2 = ((backend_ref_t *)bref2)->ref;
return b1->server->rlag - b2->server->rlag;
if (b1->weight == 0 && b2->weight == 0)
{
return b1->server->rlag -
b2->server->rlag;
}
else if (b1->weight == 0)
{
return 1;
}
else if (b2->weight == 0)
{
return -1;
}
return ((1000 + 1000 * b1->server->rlag) / b1->weight) -
((1000 + 1000 * b2->server->rlag) / b2->weight);
}
/** Compare number of current operations in backend servers */