Allow cluster slots/shards api to respond during loading (#12269)

It would be helpful for clients to get cluster slots/shards information during a node failover and is loading data.
This commit is contained in:
Harkrishn Patro 2023-06-13 08:16:32 -07:00 committed by GitHub
parent e7129e43e0
commit a9e32767f7
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 8 additions and 2 deletions

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@ -970,9 +970,9 @@ struct COMMAND_STRUCT CLUSTER_Subcommands[] = {
{MAKE_CMD("saveconfig","Forces a node to save the cluster configuration to disk.","O(1)","3.0.0",CMD_DOC_NONE,NULL,NULL,"cluster",COMMAND_GROUP_CLUSTER,CLUSTER_SAVECONFIG_History,0,CLUSTER_SAVECONFIG_Tips,0,clusterCommand,2,CMD_NO_ASYNC_LOADING|CMD_ADMIN|CMD_STALE,0,CLUSTER_SAVECONFIG_Keyspecs,0,NULL,0)},
{MAKE_CMD("set-config-epoch","Sets the configuration epoch for a new node.","O(1)","3.0.0",CMD_DOC_NONE,NULL,NULL,"cluster",COMMAND_GROUP_CLUSTER,CLUSTER_SET_CONFIG_EPOCH_History,0,CLUSTER_SET_CONFIG_EPOCH_Tips,0,clusterCommand,3,CMD_NO_ASYNC_LOADING|CMD_ADMIN|CMD_STALE,0,CLUSTER_SET_CONFIG_EPOCH_Keyspecs,0,NULL,1),.args=CLUSTER_SET_CONFIG_EPOCH_Args},
{MAKE_CMD("setslot","Binds a hash slot to a node.","O(1)","3.0.0",CMD_DOC_NONE,NULL,NULL,"cluster",COMMAND_GROUP_CLUSTER,CLUSTER_SETSLOT_History,0,CLUSTER_SETSLOT_Tips,0,clusterCommand,-4,CMD_NO_ASYNC_LOADING|CMD_ADMIN|CMD_STALE,0,CLUSTER_SETSLOT_Keyspecs,0,NULL,2),.args=CLUSTER_SETSLOT_Args},
{MAKE_CMD("shards","Returns the mapping of cluster slots to shards.","O(N) where N is the total number of cluster nodes","7.0.0",CMD_DOC_NONE,NULL,NULL,"cluster",COMMAND_GROUP_CLUSTER,CLUSTER_SHARDS_History,0,CLUSTER_SHARDS_Tips,1,clusterCommand,2,CMD_STALE,0,CLUSTER_SHARDS_Keyspecs,0,NULL,0)},
{MAKE_CMD("shards","Returns the mapping of cluster slots to shards.","O(N) where N is the total number of cluster nodes","7.0.0",CMD_DOC_NONE,NULL,NULL,"cluster",COMMAND_GROUP_CLUSTER,CLUSTER_SHARDS_History,0,CLUSTER_SHARDS_Tips,1,clusterCommand,2,CMD_LOADING|CMD_STALE,0,CLUSTER_SHARDS_Keyspecs,0,NULL,0)},
{MAKE_CMD("slaves","Lists the replica nodes of a master node.","O(1)","3.0.0",CMD_DOC_DEPRECATED,"`CLUSTER REPLICAS`","5.0.0","cluster",COMMAND_GROUP_CLUSTER,CLUSTER_SLAVES_History,0,CLUSTER_SLAVES_Tips,1,clusterCommand,3,CMD_ADMIN|CMD_STALE,0,CLUSTER_SLAVES_Keyspecs,0,NULL,1),.args=CLUSTER_SLAVES_Args},
{MAKE_CMD("slots","Returns the mapping of cluster slots to nodes.","O(N) where N is the total number of Cluster nodes","3.0.0",CMD_DOC_DEPRECATED,"`CLUSTER SHARDS`","7.0.0","cluster",COMMAND_GROUP_CLUSTER,CLUSTER_SLOTS_History,2,CLUSTER_SLOTS_Tips,1,clusterCommand,2,CMD_STALE,0,CLUSTER_SLOTS_Keyspecs,0,NULL,0)},
{MAKE_CMD("slots","Returns the mapping of cluster slots to nodes.","O(N) where N is the total number of Cluster nodes","3.0.0",CMD_DOC_DEPRECATED,"`CLUSTER SHARDS`","7.0.0","cluster",COMMAND_GROUP_CLUSTER,CLUSTER_SLOTS_History,2,CLUSTER_SLOTS_Tips,1,clusterCommand,2,CMD_LOADING|CMD_STALE,0,CLUSTER_SLOTS_Keyspecs,0,NULL,0)},
{0}
};

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@ -9,6 +9,7 @@
"function": "clusterCommand",
"history": [],
"command_flags": [
"LOADING",
"STALE"
],
"command_tips": [

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@ -23,6 +23,7 @@
]
],
"command_flags": [
"LOADING",
"STALE"
],
"command_tips": [

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@ -182,6 +182,10 @@ test "Test the replica reports a loading state while it's loading" {
fail "Replica never transitioned to loading"
}
# Verify cluster shards and cluster slots (deprecated) API responds while the node is loading data.
R $replica_id CLUSTER SHARDS
R $replica_id CLUSTER SLOTS
# Speed up the key loading and verify everything resumes
R $replica_id config set key-load-delay 0