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Cluster: bulk-accept new nodes connections.

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The same change was operated for normal client connections. This is
important for Cluster as well, since when a node rejoins the cluster,
when a partition heals or after a restart, it gets flooded with new
connection attempts by all the other nodes trying to form a full
mesh again.
This commit is contained in:
antirez 2014-05-09 11:51:36 +02:00
parent 3625b52791
commit 8a170c817d
1 changed files with 23 additions and 17 deletions
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8
src/cluster.c
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@ -492,17 +492,22 @@ void freeClusterLink(clusterLink *link) {
zfree(link); zfree(link);
} }
#define MAX_CLUSTER_ACCEPTS_PER_CALL 1000
void clusterAcceptHandler(aeEventLoop *el, int fd, void *privdata, int mask) { void clusterAcceptHandler(aeEventLoop *el, int fd, void *privdata, int mask) {
int cport, cfd; int cport, cfd;
int max = MAX_CLUSTER_ACCEPTS_PER_CALL;
char cip[REDIS_IP_STR_LEN]; char cip[REDIS_IP_STR_LEN];
clusterLink *link; clusterLink *link;
REDIS_NOTUSED(el); REDIS_NOTUSED(el);
REDIS_NOTUSED(mask); REDIS_NOTUSED(mask);
REDIS_NOTUSED(privdata); REDIS_NOTUSED(privdata);
while(max--) {
cfd = anetTcpAccept(server.neterr, fd, cip, sizeof(cip), &cport); cfd = anetTcpAccept(server.neterr, fd, cip, sizeof(cip), &cport);
if (cfd == ANET_ERR) { if (cfd == ANET_ERR) {
redisLog(REDIS_VERBOSE,"Accepting cluster node: %s", server.neterr); if (errno != EWOULDBLOCK)
redisLog(REDIS_VERBOSE,
"Accepting cluster node: %s", server.neterr);
return; return;
} }
anetNonBlock(NULL,cfd); anetNonBlock(NULL,cfd);
@ -518,6 +523,7 @@ void clusterAcceptHandler(aeEventLoop *el, int fd, void *privdata, int mask) {
link = createClusterLink(NULL); link = createClusterLink(NULL);
link->fd = cfd; link->fd = cfd;
aeCreateFileEvent(server.el,cfd,AE_READABLE,clusterReadHandler,link); aeCreateFileEvent(server.el,cfd,AE_READABLE,clusterReadHandler,link);
}
} }
/* ----------------------------------------------------------------------------- /* -----------------------------------------------------------------------------