chore: add notes in example configs (#18166)

* chore: add notes in meta config

* z

* z

Author: everpcpc

scripts/distribution/configs/databend-meta.toml

@@ -27,7 +27,10 @@ raft_listen_host = "127.0.0.1"
 raft_advertise_host = "localhost"
 
 # Start up mode: single node cluster
+# NOTE: comment out this line after the first run.
 single        = true
 
 # Start up mode: join a cluster
-# join          = ["127.0.0.1:28104"]
+# NOTE: change `join` to a list of addresses of all databend-meta nodes.
+# NOTE: uncomment this line after the first run.
+# join          = ["127.0.0.1:28004"]

scripts/distribution/configs/databend-query.toml

@@ -33,7 +33,8 @@ flight_sql_handler_port = 8900
 tenant_id = "default"
 cluster_id = "default"
 
-table_engine_memory_enabled = true
+
+# NOTE: comment out one of the following blocks to enable a user for the first run.
 
 # [[query.users]]
 # name = "root"
@@ -64,7 +65,7 @@ dir = "/var/log/databend"
 endpoints = ["0.0.0.0:9191"]
 username = "root"
 password = "root"
-client_timeout_in_second = 60
+client_timeout_in_second = 10
 auto_sync_interval = 60
 
 # Storage config.