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config option to select if when replication link with master a slave should or not serve stale data

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This commit is contained in:
antirez
2010-11-04 19:59:21 +01:00
parent 12ebe2ac17
commit 4ebfc45528
4 changed files with 42 additions and 1 deletions
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12
src/redis.c
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@ -786,6 +786,7 @@ void initServerConfig() {
server.masterport = 6379;
server.master = NULL;
server.replstate = REDIS_REPL_NONE;
server.repl_serve_stale_data = 1;
/* Double constants initialization */
R_Zero = 0.0;
@ -994,6 +995,17 @@ int processCommand(redisClient *c) {
return REDIS_OK;
}
/* Only allow INFO and SLAVEOF when slave-serve-stale-data is no and
* we are a slave with a broken link with master. */
if (server.masterhost && server.replstate != REDIS_REPL_CONNECTED &&
server.repl_serve_stale_data == 0 &&
cmd->proc != infoCommand && cmd->proc != slaveofCommand)
{
addReplyError(c,
"link with MASTER is down and slave-serve-stale-data is set to no");
return REDIS_OK;
}
/* Exec the command */
if (c->flags & REDIS_MULTI &&
cmd->proc != execCommand && cmd->proc != discardCommand &&