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Support compaction_threshold=1 for tiered compaction #7257

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merged 1 commit into from
Mar 28, 2024
Merged

Support compaction_threshold=1 for tiered compaction #7257

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5 changes: 3 additions & 2 deletions pageserver/compaction/src/compact_tiered.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -43,7 +43,8 @@ pub async fn compact_tiered<E: CompactionJobExecutor>(
fanout: u64,
ctx: &E::RequestContext,
) -> anyhow::Result<()> {
assert!(fanout >= 2);
assert!(fanout >= 1, "fanout needs to be at least 1 but is {fanout}");
let exp_base = fanout.max(2);
// Start at L0
let mut current_level_no = 0;
let mut current_level_target_height = target_file_size;
Expand Down Expand Up @@ -106,7 +107,7 @@ pub async fn compact_tiered<E: CompactionJobExecutor>(
break;
}
current_level_no += 1;
current_level_target_height = current_level_target_height.saturating_mul(fanout);
current_level_target_height = current_level_target_height.saturating_mul(exp_base);
}
Ok(())
}
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