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fix(scrubber): log even if no refs are found (#11160)

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## Problem

Investigate https://github.com/neondatabase/neon/issues/11159

## Summary of changes

This doesn't fix the issue, but at least we can narrow down the cause
next time it happens by logging ancestor referenced layer cnt even if
it's 0.

Signed-off-by: Alex Chi Z <chi@neon.tech>
This commit is contained in:
Alex Chi Z.
2025-03-11 10:33:35 -04:00
committed by GitHub
parent 359c64c779
commit 7588983168
2 changed files with 7 additions and 8 deletions
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12
storage_scrubber/src/pageserver_physical_gc.rs
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@@ -152,10 +152,8 @@ impl TenantRefAccumulator {
}
}
if !ancestor_refs.is_empty() {
tracing::info!(%ttid, "Found {} ancestor refs", ancestor_refs.len());
self.ancestor_ref_shards.update(ttid, ancestor_refs);
}
tracing::info!(%ttid, "Found {} ancestor refs", ancestor_refs.len());
self.ancestor_ref_shards.update(ttid, ancestor_refs);
}
/// Consume Self and return a vector of ancestor tenant shards that should be GC'd, and map of referenced ancestor layers to preserve
@@ -779,7 +777,7 @@ pub async fn pageserver_physical_gc(
let mut summary = GcSummary::default();
{
let timelines = std::pin::pin!(timelines.try_buffered(CONCURRENCY));
let timelines = timelines.try_buffered(CONCURRENCY);
let timelines = timelines.try_flatten();
let timelines = timelines.map_ok(|(ttid, tenant_manifest_arc)| {
@@ -793,8 +791,8 @@ pub async fn pageserver_physical_gc(
tenant_manifest_arc,
)
});
let mut timelines = std::pin::pin!(timelines.try_buffered(CONCURRENCY));
let timelines = timelines.try_buffered(CONCURRENCY);
let mut timelines = std::pin::pin!(timelines);
// Drain futures for per-shard GC, populating accumulator as a side effect
while let Some(i) = timelines.next().await {
summary.merge(i?);