Can't run query because there is one query pending already

[bodtx]

I thought there was a queue system or sthg like that but when I do too many request with my connection pool, I have these error:
ERROR com.github.mauricio.async.db.postgresql.PostgreSQLConnection - Can't run query because there is one query pending already

Each request are done from a connection of the pool then Connection is closed:

res.result().queryStream(sqlCommand, resultSetStream -> { //do the job}).close();

here is my pool setup

JsonObject postgreSQLClientConfig = new JsonObject().put("host", "10.203.62.160").put("port", 5432).put("username", "postgres").put("password", "postgres").put("database", "XXX") .put("maxPoolSize", 3); SQLClient postgreSQLClient = PostgreSQLClient.createShared(vertx, postgreSQLClientConfig);

I thought connection taken from the pool where free from query, do I have to check the connection state and queue the query myself?

[andy-yx-chen]

res.result().queryStream(sqlCommand, resultSetStream -> { //do the job}).close();

This actually will return the connection before the query finishes, it's not surprise that you get the exception, you should close the connection inside //do the job