[IGNITE-13190] Core defragmentation functions

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.10
• Labels: IEP-47
• Ignite Flags: Docs Required, Release Notes Required
• Assignee: Ivan Bessonov
• Reporter: Sergey Chugunov
• Created: 26/Jun/20 14:44
• Updated: 17/Dec/20 10:25
• Resolved: 03/Dec/20 07:42

Description

The following set of functions covering defragmentation happy-case needed:

• Initialization of defragmentation manager when node is started in maintenance mode.
• Information about partition files is gathered by defrag mgr.
• For each partition file corresponding file of defragmented partition is created and initialized.
• Keys are transferred from old partitions to new partitions.
• Checkpointer is aware of new partition files and flushes defragmented memory to new partition files.

 

No fault-tolerance code nor index defragmentation mappings are needed in this task.

Issue Links

• is required by: IGNITE-13697 Control.sh API - schedule & cancel
• links to: GitHub Pull Request #7984