[IGNITE-10304] SQL: Encapsulate H2 query execution into ConnectionManager

• Type: Task
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: sql
• Ignite Flags: Docs Required
• Assignee: Unassigned
• Reporter: Vladimir Ozerov
• Created: 16/Nov/18 17:15
• Updated: 03/Jul/20 06:25

Description

This ticket should be done after IGNITE-10299. Currently ConnectionManager exposes cached H2 connections to the outside. Sometimes these connections are used in safe manner and ConnectionManager.onSqlException is called to recycle bad connection. But most of the time this is not the case, what may lead to unexpected behavior.

Let's try to hide all statement execution logic inside ConnectionManager to avoid this.

Issue Links

• requires: IGNITE-10303 SQL: Move connection management logic into separate class