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LogLog-Beta Algorithm support within HLL

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Config option to use LogLog-Beta Algorithm for Cardinality
This commit is contained in:
Harish Murthy
2016-12-09 14:28:19 +05:30
committed by antirez
parent 5ad2a94a16
commit c55e3fbae5
4 changed files with 55 additions and 25 deletions
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11
src/config.c
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@ -688,6 +688,10 @@ void loadServerConfigFromString(char *config) {
err = sentinelHandleConfiguration(argv+1,argc-1);
if (err) goto loaderr;
}
} else if (!strcasecmp(argv[0],"hll-use-loglogbeta") && argc == 2) {
if ((server.hll_use_loglogbeta = yesnotoi(argv[1])) == -1) {
err = "argument must be 'yes' or 'no'"; goto loaderr;
}
} else {
err = "Bad directive or wrong number of arguments"; goto loaderr;
}
@ -980,7 +984,9 @@ void configSetCommand(client *c) {
} config_set_bool_field(
"slave-lazy-flush",server.repl_slave_lazy_flush) {
} config_set_bool_field(
"no-appendfsync-on-rewrite",server.aof_no_fsync_on_rewrite) {
"no-appendfsync-on-rewrite",server.aof_no_fsync_on_rewrite) {
} config_set_bool_field(
"hll-use-loglogbeta",server.hll_use_loglogbeta) {
/* Numerical fields.
* config_set_numerical_field(name,var,min,max) */
@ -1245,6 +1251,8 @@ void configGetCommand(client *c) {
server.lazyfree_lazy_server_del);
config_get_bool_field("slave-lazy-flush",
server.repl_slave_lazy_flush);
config_get_bool_field("hll-use-loglogbeta",
server.hll_use_loglogbeta);
/* Enum values */
config_get_enum_field("maxmemory-policy",
@ -1963,6 +1971,7 @@ int rewriteConfig(char *path) {
rewriteConfigYesNoOption(state,"lazyfree-lazy-expire",server.lazyfree_lazy_expire,CONFIG_DEFAULT_LAZYFREE_LAZY_EXPIRE);
rewriteConfigYesNoOption(state,"lazyfree-lazy-server-del",server.lazyfree_lazy_server_del,CONFIG_DEFAULT_LAZYFREE_LAZY_SERVER_DEL);
rewriteConfigYesNoOption(state,"slave-lazy-flush",server.repl_slave_lazy_flush,CONFIG_DEFAULT_SLAVE_LAZY_FLUSH);
rewriteConfigYesNoOption(state,"hll-use-loglogbeta",server.hll_use_loglogbeta,CONFIG_DEFAULT_HLL_USE_LOGLOGBETA);
/* Rewrite Sentinel config if in Sentinel mode. */
if (server.sentinel_mode) rewriteConfigSentinelOption(state);