[IGNITE-12369] JdbcThinClient and Server compatibility broken

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.8
• Component/s: sql
• Release Note: Fixed compatibility issue with JDBC drivers of older versions.
• Ignite Flags: Release Notes Required
• Assignee: Unassigned
• Reporter: Konstantin Orlov
• Created: 14/Nov/19 08:27
• Updated: 18/Nov/19 09:21
• Resolved: 18/Nov/19 09:21

Description

Query cancellation support was introduced in IGNITE-5439. From this time server expects that ALL request have id. It breaks compatibility with clients whose version prior to 2.8.0.
Furthermore backport of this feature to 8.7 breaks compatibility newer build of server with older build of client.

See ClientListenerProcessor#makeFilters. New filter with overrided onMessageReceived is created here. It tries to read request id and if there is not enough data to read long value, it crashes.

Issue Links

• links to: GitHub Pull Request #7050