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ruanhaishen
redis
Commits
1f43bf29
Commit
1f43bf29
authored
Nov 23, 2018
by
yongman
Committed by
antirez
Dec 11, 2018
Browse files
Fix choose a random master node for slot assignment
parent
69f0c678
Changes
1
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Inline
Side-by-side
src/redis-cli.c
View file @
1f43bf29
...
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@@ -3505,6 +3505,34 @@ static clusterManagerNode *clusterManagerNodeWithLeastReplicas() {
return node;
}
/* This fucntion returns a random master node, return NULL if none */
static clusterManagerNode *clusterManagerNodeMasterRandom() {
int master_count = 0;
int idx;
listIter li;
listNode *ln;
listRewind(cluster_manager.nodes, &li);
while ((ln = listNext(&li)) != NULL) {
clusterManagerNode *n = ln->value;
if (n->flags & CLUSTER_MANAGER_FLAG_SLAVE) continue;
master_count++;
}
srand(time(NULL));
idx = rand() % master_count;
listRewind(cluster_manager.nodes, &li);
while ((ln = listNext(&li)) != NULL) {
clusterManagerNode *n = ln->value;
if (n->flags & CLUSTER_MANAGER_FLAG_SLAVE) continue;
if (!idx--) {
return n;
}
}
/* Can not be reached */
return NULL;
}
static int clusterManagerFixSlotsCoverage(char *all_slots) {
int i, fixed = 0;
list *none = NULL, *single = NULL, *multi = NULL;
...
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@@ -3577,16 +3605,12 @@ static int clusterManagerFixSlotsCoverage(char *all_slots) {
"across the cluster:\n");
clusterManagerPrintSlotsList(none);
if (confirmWithYes("Fix these slots by covering with a random node?")){
srand(time(NULL));
listIter li;
listNode *ln;
listRewind(none, &li);
while ((ln = listNext(&li)) != NULL) {
sds slot = ln->value;
long idx = (long) (rand() % listLength(cluster_manager.nodes));
listNode *node_n = listIndex(cluster_manager.nodes, idx);
assert(node_n != NULL);
clusterManagerNode *n = node_n->value;
clusterManagerNode *n = clusterManagerNodeMasterRandom();
clusterManagerLogInfo(">>> Covering slot %s with %s:%d\n",
slot, n->ip, n->port);
/* Ensure the slot is not already assigned. */
...
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