[IGNITE-20501] Calcite engine. Memory leak in MailboxRegistryImpl#remotes on JOINs

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.16
• Labels: calcite calcite3-required ignite ise
• Release Note: SQL Calcite: Fixed memory leak in MailboxRegistryImpl#remotes
• Ignite Flags: Release Notes Required
• Assignee: Aleksey Plekhanov
• Reporter: Aleksey Plekhanov
• Created: 26/Sep/23 19:21
• Updated: 13/Nov/23 12:33
• Resolved: 20/Oct/23 13:53

Description

When JOIN relational operator is executed, downstream of JOIN can be closed if only one side of JOIN is already drained (see last lines of MergeJoinNode.InnerJoin#join, for example). In this case query can be prematurely closed, and after this, message for another side of join can arrive and register new Inbox (see ExchangeServiceImpl#onMessage(UUID, QueryBatchMessage)), that never will be unregistered.

Issue Links

• links to: GitHub Pull Request #10996