Allow last two portions on a level to be compacted (#19116)

zverevgeny · zverevgeny · commit 774754f0b535 · 2025-06-03T12:33:18.000Z
diff --git a/ydb/core/tx/columnshard/engines/storage/optimizer/lcbuckets/planner/level/common_level.h b/ydb/core/tx/columnshard/engines/storage/optimizer/lcbuckets/planner/level/common_level.h
@@ -59,7 +59,7 @@ class TOneLayerPortions: public IPortionsLevel {
         if (!GetNextLevel()) {
             return 0;
         }
-        if ((ui64)GetPortionsInfo().GetBlobBytes() > GetLevelBlobBytesLimit() && GetPortionsInfo().GetCount() > 2 &&
+        if ((ui64)GetPortionsInfo().GetBlobBytes() > GetLevelBlobBytesLimit() && GetPortionsInfo().GetCount() >= 2 &&
             (ui64)GetPortionsInfo().GetBlobBytes() > ExpectedPortionSize * 2) {
             return ((ui64)GetLevelId() << 48) + GetPortionsInfo().GetBlobBytes() - GetLevelBlobBytesLimit();
         } else {

Original file line number	Diff line number	Diff line change
`@@ -59,7 +59,7 @@ class TOneLayerPortions: public IPortionsLevel {`
`59`	`59`	`if (!GetNextLevel()) {`
`60`	`60`	`return 0;`
`61`	`61`	`}`
`62`		`- if ((ui64)GetPortionsInfo().GetBlobBytes() > GetLevelBlobBytesLimit() && GetPortionsInfo().GetCount() > 2 &&`
	`62`	`+ if ((ui64)GetPortionsInfo().GetBlobBytes() > GetLevelBlobBytesLimit() && GetPortionsInfo().GetCount() >= 2 &&`
`63`	`63`	`(ui64)GetPortionsInfo().GetBlobBytes() > ExpectedPortionSize * 2) {`
`64`	`64`	`return ((ui64)GetLevelId() << 48) + GetPortionsInfo().GetBlobBytes() - GetLevelBlobBytesLimit();`
`65`	`65`	`} else {`