[IGNITE-13815] Remove ability to delete segments from the middle of WAL archive

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.10
• Component/s: persistence
• Release Note: Removing the ability to remove segments from the middle of WAL archive.
• Ignite Flags: Release Notes Required
• Assignee: Kirill Tkalenko
• Reporter: Kirill Tkalenko
• Reviewer: Anton Kalashnikov
• Created: 04/Dec/20 12:15
• Updated: 25/Dec/20 07:15
• Resolved: 11/Dec/20 12:30

Description

At the moment we have the option to delete segments from the middle of the archive via the FileWriteAheadLogManager#truncate. This creates gaps in the archive and makes it invalid.

It should be possible to delete segments sequentially up to the upper boundary. It has also been found that there is no protection against segment deletion, which may be needed for a binary recovery.

Also need to get rid of the physical check when reserving segments through the FileWriteAheadLogManager#reserve.

Issue Links

• causes: IGNITE-13848 Premature update SegmentReservationStorage#minReserveIdx during truncate of segments
• causes: IGNITE-13910 Do not release a segment if it is not present in FileWriteAheadLogManager#reserve
• links to: GitHub Pull Request #8545