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CLUSTER GETKEYSINSLOT: avoid overallocating.

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Close #3911.
This commit is contained in:
antirez 2017-07-11 15:49:09 +02:00
parent 585cdf3a8f
commit e1a94c0dde
1 changed files with 5 additions and 0 deletions
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5
src/cluster.c
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@ -4380,6 +4380,11 @@ void clusterCommand(client *c) {
return; return;
} }
/* Avoid allocating more than needed in case of large COUNT argument
* and smaller actual number of keys. */
unsigned int keys_in_slot = countKeysInSlot(slot);
if (maxkeys > keys_in_slot) maxkeys = keys_in_slot;
keys = zmalloc(sizeof(robj*)*maxkeys); keys = zmalloc(sizeof(robj*)*maxkeys);
numkeys = getKeysInSlot(slot, keys, maxkeys); numkeys = getKeysInSlot(slot, keys, maxkeys);
addReplyMultiBulkLen(c,numkeys); addReplyMultiBulkLen(c,numkeys);