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Diskless replication: missing listRewind() added. 

This caused BGSAVE to be triggered a second time without any need when
we switch from socket to disk target via the command

    CONFIG SET repl-diskless-sync no

and there is already a slave waiting for the BGSAVE to start.
Also comments clarified about what is happening.
This commit is contained in:
antirez 2014-10-29 12:48:22 +01:00
parent 4b8f4b90b9
commit 9ec22d9223
1 changed files with 5 additions and 1 deletions
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6
src/replication.c
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@ -2062,7 +2062,11 @@ void replicationCron(void) {
* if there was a recent socket -> disk config change. */
if (startBgsaveForReplication() == REDIS_OK) {
/* It started! We need to change the state of slaves
* from WAIT_BGSAVE_START to WAIT_BGSAVE_END. */
* from WAIT_BGSAVE_START to WAIT_BGSAVE_END in case
* the current target is disk. Otherwise it was already done
* by rdbSaveToSlavesSockets() which is called by
* startBgsaveForReplication(). */
listRewind(server.slaves,&li);
while((ln = listNext(&li))) {
redisClient *slave = ln->value;
if (slave->replstate == REDIS_REPL_WAIT_BGSAVE_START)