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Make SORT BY <constant> STORE ... to always produce the same output by force sorting, so that we have deterministic replication of this command.

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antirez
2012-02-01 17:05:45 +01:00
parent 2c861050c1
commit de79a2ee12
2 changed files with 16 additions and 0 deletions
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9
src/sort.c
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@ -203,6 +203,15 @@ void sortCommand(redisClient *c) {
j++;
}
/* If we have STORE we need to force sorting for deterministic output
* and replication. We use alpha sorting since this is guaranteed to
* work with any input. */
if (storekey && dontsort) {
dontsort = 0;
alpha = 1;
sortby = NULL;
}
/* Destructively convert encoded sorted sets for SORT. */
if (sortval->type == REDIS_ZSET)
zsetConvert(sortval, REDIS_ENCODING_SKIPLIST);