Issue Details

Number

9027

Title

Unbounded reorg memory usage

Description

#9014 brought to light in issue introduced in #7946 - when we do a reorg, we now keep the full contents of each block we connect in memory until the reorg is complete. Luckily, #9014 makes this a bit eaiser to fix - dont keep more than a few blocks around in shared_ptrs, just re-read them from disk after the reorg is complete when you need to call signalers. This may be complicated due to pruning, but it should be doable.

URL

https://github.com/bitcoin/bitcoin/issue/9027

Closed by

Notes Might still be an issue in theory, but a day's worth of blocks re-org (6*24 blocks) used ~700MB. In the case that there is a >1 day re-org, a few low-powered nodes going OOM might not be our biggest issue?

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