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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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40
src/cluster.c
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@ -492,32 +492,38 @@ void freeClusterLink(clusterLink *link) {
zfree(link);
}
#define MAX_CLUSTER_ACCEPTS_PER_CALL 1000
void clusterAcceptHandler(aeEventLoop *el, int fd, void *privdata, int mask) {
int cport, cfd;
int max = MAX_CLUSTER_ACCEPTS_PER_CALL;
char cip[REDIS_IP_STR_LEN];
clusterLink *link;
REDIS_NOTUSED(el);
REDIS_NOTUSED(mask);
REDIS_NOTUSED(privdata);
cfd = anetTcpAccept(server.neterr, fd, cip, sizeof(cip), &cport);
if (cfd == ANET_ERR) {
redisLog(REDIS_VERBOSE,"Accepting cluster node: %s", server.neterr);
return;
}
anetNonBlock(NULL,cfd);
anetEnableTcpNoDelay(NULL,cfd);
while(max--) {
cfd = anetTcpAccept(server.neterr, fd, cip, sizeof(cip), &cport);
if (cfd == ANET_ERR) {
if (errno != EWOULDBLOCK)
redisLog(REDIS_VERBOSE,
"Accepting cluster node: %s", server.neterr);
return;
}
anetNonBlock(NULL,cfd);
anetEnableTcpNoDelay(NULL,cfd);
/* Use non-blocking I/O for cluster messages. */
redisLog(REDIS_VERBOSE,"Accepted cluster node %s:%d", cip, cport);
/* Create a link object we use to handle the connection.
* It gets passed to the readable handler when data is available.
* Initiallly the link->node pointer is set to NULL as we don't know
* which node is, but the right node is references once we know the
* node identity. */
link = createClusterLink(NULL);
link->fd = cfd;
aeCreateFileEvent(server.el,cfd,AE_READABLE,clusterReadHandler,link);
/* Use non-blocking I/O for cluster messages. */
redisLog(REDIS_VERBOSE,"Accepted cluster node %s:%d", cip, cport);
/* Create a link object we use to handle the connection.
* It gets passed to the readable handler when data is available.
* Initiallly the link->node pointer is set to NULL as we don't know
* which node is, but the right node is references once we know the
* node identity. */
link = createClusterLink(NULL);
link->fd = cfd;
aeCreateFileEvent(server.el,cfd,AE_READABLE,clusterReadHandler,link);
}
}
/* -----------------------------------------------------------------------------