From 5bd887da46a5747c03ec7066158d0cfa8e85aef4 Mon Sep 17 00:00:00 2001
From: Andrei Berlin <aberlin@ydb.tech>
Date: Tue, 14 May 2024 11:13:08 +0000
Subject: [PATCH] Use default minHugeBlobSize to migrate the heap

---
 ydb/core/blobstorage/vdisk/common/vdisk_config.cpp           | 5 +++--
 ydb/core/blobstorage/vdisk/common/vdisk_config.h             | 1 +
 .../blobstorage/vdisk/localrecovery/localrecovery_public.cpp | 4 ++--
 3 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/ydb/core/blobstorage/vdisk/common/vdisk_config.cpp b/ydb/core/blobstorage/vdisk/common/vdisk_config.cpp
index 5237b73bbcf7..f4a2113a5b3f 100644
--- a/ydb/core/blobstorage/vdisk/common/vdisk_config.cpp
+++ b/ydb/core/blobstorage/vdisk/common/vdisk_config.cpp
@@ -136,8 +136,9 @@ namespace NKikimr {
                 MinHugeBlobInBytes = 512u << 10u;
                 break;
         }
-        // for compatibility reasons it must be 512KB
-        MilestoneHugeBlobInBytes = 512u << 10u;
+        OldMinHugeBlobInBytes = MinHugeBlobInBytes; // preserved to migrate entry point state correctly 
+        MilestoneHugeBlobInBytes = 512u << 10u;  // for compatibility reasons it must be 512KB
+
     }
 
     void TVDiskConfig::Merge(const NKikimrBlobStorage::TVDiskConfig &update) {
diff --git a/ydb/core/blobstorage/vdisk/common/vdisk_config.h b/ydb/core/blobstorage/vdisk/common/vdisk_config.h
index 04b10d887796..a2335182c48d 100644
--- a/ydb/core/blobstorage/vdisk/common/vdisk_config.h
+++ b/ydb/core/blobstorage/vdisk/common/vdisk_config.h
@@ -116,6 +116,7 @@ namespace NKikimr {
         ui32 HullSstSizeInChunksLevel;
         ui32 HugeBlobsFreeChunkReservation;
         ui32 MinHugeBlobInBytes;
+        ui32 OldMinHugeBlobInBytes;
         ui32 MilestoneHugeBlobInBytes;
         ui32 HugeBlobOverhead;
         ui32 HullCompLevel0MaxSstsAtOnce;
diff --git a/ydb/core/blobstorage/vdisk/localrecovery/localrecovery_public.cpp b/ydb/core/blobstorage/vdisk/localrecovery/localrecovery_public.cpp
index 0aa301c7e3e2..6a9dfb41a58b 100644
--- a/ydb/core/blobstorage/vdisk/localrecovery/localrecovery_public.cpp
+++ b/ydb/core/blobstorage/vdisk/localrecovery/localrecovery_public.cpp
@@ -418,7 +418,7 @@ namespace NKikimr {
                             LocRecCtx->PDiskCtx->Dsk->ChunkSize,
                             LocRecCtx->PDiskCtx->Dsk->AppendBlockSize,
                             LocRecCtx->PDiskCtx->Dsk->AppendBlockSize,
-                            Config->MinHugeBlobInBytes,
+                            Config->OldMinHugeBlobInBytes,
                             Config->MilestoneHugeBlobInBytes,
                             Config->MaxLogoBlobDataSize,
                             Config->HugeBlobOverhead,
@@ -440,7 +440,7 @@ namespace NKikimr {
                             LocRecCtx->PDiskCtx->Dsk->ChunkSize,
                             LocRecCtx->PDiskCtx->Dsk->AppendBlockSize,
                             LocRecCtx->PDiskCtx->Dsk->AppendBlockSize,
-                            Config->MinHugeBlobInBytes,
+                            Config->OldMinHugeBlobInBytes,
                             Config->MilestoneHugeBlobInBytes,
                             Config->MaxLogoBlobDataSize,
                             Config->HugeBlobOverhead,