[IGNITE-13373] WAL segmentns do not released on releaseHistoryForPreloading()

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.10
• Labels: 2.9.1-rc
• Assignee: Alexander Lapin
• Reporter: Alexander Lapin
• Created: 19/Aug/20 06:43
• Updated: 31/Dec/20 04:26
• Resolved: 20/Aug/20 12:27

Description

• Reserve/releaseHistoryForPreloading() was reworked, now we store oldest WALPointer that was reserved during reserveHistoryForPreloading in reservedForPreloading field. As a result it's possible to release wall reservation on releaseHIstoryForPreloading().

• searchAndReserveCheckpoints() was slightly refactored: now it returns not only an earliestValidCheckpoints but also an oldest reservedCheckpoint, so that there’s no need to recalculate it within reserveHistoryForExchange().

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Issue Links

• links to: GitHub Pull Request #8165