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ruanhaishen
redis
Commits
4348d25f
Commit
4348d25f
authored
Dec 17, 2019
by
antirez
Browse files
Add some comment to PR #6144 changes.
parent
f3d67b38
Changes
1
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src/cluster.c
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4348d25f
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@@ -5599,14 +5599,22 @@ clusterNode *getNodeByQuery(client *c, struct redisCommand *cmd, robj **argv, in
* if it is a read command and when allow_reads_when_down is enabled. */
if (server.cluster->state != CLUSTER_OK) {
if (!server.cluster_allow_reads_when_down) {
/* The cluster is configured to block commands when the
* cluster is down. */
if (error_code) *error_code = CLUSTER_REDIR_DOWN_STATE;
return NULL;
}
if (!(cmd->flags & CMD_READONLY) && !(cmd->proc == evalCommand)
&& !(cmd->proc == evalShaCommand)) {
} else if (!(cmd->flags & CMD_READONLY) && !(cmd->proc == evalCommand)
&& !(cmd->proc == evalShaCommand))
{
/* The cluster is configured to allow read only commands
* but this command is neither readonly, nor EVAL or
* EVALSHA. */
if (error_code) *error_code = CLUSTER_REDIR_DOWN_RO_STATE;
return NULL;
} else {
/* Fall through and allow the command to be executed:
* this happens when server.cluster_allow_reads_when_down is
* true and the command is a readonly command or EVAL / EVALSHA. */
}
}
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