Description

There are a few concerns about settings object

• Its documentation doesn't tell anything about thread-safety
• When same object is used for concurrent operation it may lead that one operation will override settings of another because internally settings objects being changed.

Here is an example: https://github.com/ClickHouse/clickhouse-java/blob/v0.8.3/client-v2/src/main/java/com/clickhouse/client/api/Client.java#L1562

It show that query parameters are calculated and set to the settings. If settings are shared between thread who knows what may happen.