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Force replcaing of master layers with local layer in cross-region pageserver replica

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Konstantin Knizhnik
2023-06-18 14:57:30 +03:00
parent d1613ebae3
commit 3fa72bbf5d
1 changed files with 6 additions and 1 deletions
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7
pageserver/src/tenant/timeline.rs
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@@ -3117,7 +3117,12 @@ impl Timeline {
layers.count_deltas(&img_range, &(img_lsn..lsn), Some(threshold))?;
max_deltas = max_deltas.max(num_deltas);
if num_deltas >= threshold {
// Create new image layers if there are at least `threshold` delta layers since last image layer...
if num_deltas >= threshold
// ...or it is master layer for cross-region replica: force generation of image layer in this case
// to make replica independent from master.
|| img_lsn <= self.replica_lsn.unwrap_or(Lsn(0))
{
debug!(
"key range {}-{}, has {} deltas on this timeline in LSN range {}..{}",
img_range.start, img_range.end, num_deltas, img_lsn, lsn