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check dbSize when rewrite AOF, in case unnecessary SELECT (#12775)

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Introduced by #11695, should skip empty db in case unnecessary SELECT.
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zhaozhao.zz 2023-11-17 19:00:26 +08:00 committed by GitHub
parent 9b6dded421
commit 6013122c8e
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1 changed files with 4 additions and 1 deletions
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src/aof.c
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@ -2257,10 +2257,13 @@ int rewriteAppendOnlyFileRio(rio *aof) {
for (j = 0; j < server.dbnum; j++) {
char selectcmd[] = "*2\r\n$6\r\nSELECT\r\n";
redisDb *db = server.db + j;
if (dbSize(db, DB_MAIN) == 0) continue;
/* SELECT the new DB */
if (rioWrite(aof,selectcmd,sizeof(selectcmd)-1) == 0) goto werr;
if (rioWriteBulkLongLong(aof,j) == 0) goto werr;
redisDb *db = server.db + j;
dbit = dbIteratorInit(db, DB_MAIN);
/* Iterate this DB writing every entry */
while((de = dbIteratorNext(dbit)) != NULL) {