After update to version 20.12.4.5, Clickhouse started spamming to log messages 
```
2021.02.08 10:42:16.976140 [ 40737 ] {} <Warning> base.table (ReplicatedMergeTreePartCheckThread): Found parts with the same min block and with the same max block as the missing part 20180521_267052_277907_5309. Hoping that it will eventually appear as a result of a merge.
2021.02.08 10:42:16.976225 [ 40806 ] {} <Warning> base.table (ReplicatedMergeTreePartCheckThread): Checking part 20180521_267052_277903_5305
2021.02.08 10:42:16.977196 [ 40806 ] {} <Warning> base.table (ReplicatedMergeTreePartCheckThread): Checking if anyone has a part 20180521_267052_277903_5305 or covering part.
2021.02.08 10:42:16.980575 [ 40806 ] {} <Warning> base.table (ReplicatedMergeTreePartCheckThread): Found parts with the same min block and with the same max block as the missing part 20180521_267052_277903_5305. Hoping that it will eventually appear as a result of a merge.
2021.02.08 10:42:16.980663 [ 40878 ] {} <Warning> base.table (ReplicatedMergeTreePartCheckThread): Checking part 20180521_267052_277905_5307
2021.02.08 10:42:16.981219 [ 40878 ] {} <Warning> base.table (ReplicatedMergeTreePartCheckThread): Checking if anyone has a part 20180521_267052_277905_5307 or covering part.
2021.02.08 10:42:16.984490 [ 40878 ] {} <Warning> base.table (ReplicatedMergeTreePartCheckThread): Found parts with the same min block and with the same max block as the missing part 20180521_267052_277905_5307. Hoping that it will eventually appear as a result of a merge.
2021.02.08 10:42:16.984565 [ 40890 ] {} <Warning> base.table (ReplicatedMergeTreePartCheckThread): Checking part 20180521_267052_277904_5306
2021.02.08 10:42:16.985117 [ 40890 ] {} <Warning> base.table (ReplicatedMergeTreePartCheckThread): Checking if anyone has a part 20180521_267052_277904_5306 or covering part.
2021.02.08 10:42:16.988831 [ 40890 ] {} <Warning> base.table (ReplicatedMergeTreePartCheckThread): Found parts with the same min block and with the same max block as the missing part 20180521_267052_277904_5306. Hoping that it will eventually appear as a result of a merge.
2021.02.08 10:42:16.988913 [ 40884 ] {} <Warning> base.table (ReplicatedMergeTreePartCheckThread): Checking part 20180521_267052_277906_5308
2021.02.08 10:42:16.989523 [ 40884 ] {} <Warning> base.table (ReplicatedMergeTreePartCheckThread): Checking if anyone has a part 20180521_267052_277906_5308 or covering part.
2021.02.08 10:42:16.992210 [ 40884 ] {} <Warning> base.table (ReplicatedMergeTreePartCheckThread): Found parts with the same min block and with the same max block as the missing part 20180521_267052_277906_5308. Hoping that it will eventually appear as a result of a merge.
2021.02.08 10:42:16.992319 [ 40806 ] {} <Warning> base.table (ReplicatedMergeTreePartCheckThread): Checking part 20180521_267052_277907_5309
2021.02.08 10:42:16.993439 [ 40806 ] {} <Warning> base.table (ReplicatedMergeTreePartCheckThread): Checking if anyone has a part 20180521_267052_277907_5309 or covering part.
2021.02.08 10:42:16.996080 [ 40806 ] {} <Warning> base.table (ReplicatedMergeTreePartCheckThread): Found parts with the same min block and with the same max block as the missing part 20180521_267052_277907_5309. Hoping that it will eventually appear as a result of a merge.
2021.02.08 10:42:16.996177 [ 40730 ] {} <Warning> base.table (ReplicatedMergeTreePartCheckThread): Checking part 20180521_267052_277905_5307
2021.02.08 10:42:16.997928 [ 40730 ] {} <Warning> base.table (ReplicatedMergeTreePartCheckThread): Checking if anyone has a part 20180521_267052_277905_5307 or covering part.
2021.02.08 10:42:17.001236 [ 40730 ] {} <Warning> base.table (ReplicatedMergeTreePartCheckThread): Found parts with the same min block and with the same max block as the missing part 20180521_267052_277905_5307. Hoping that it will eventually appear as a result of a merge.
2021.02.08 10:42:17.001429 [ 40785 ] {} <Warning> base.table (ReplicatedMergeTreePartCheckThread): Checking part 20180521_267052_277903_5305
2021.02.08 10:42:17.002155 [ 40785 ] {} <Warning> base.table (ReplicatedMergeTreePartCheckThread): Checking if anyone has a part 20180521_267052_277903_5305 or covering part.
```
These messages have appeared before, but not in such numbers. After update log grows by 1GB in hours.
Can we solve problem that causes them?
Also we have huge network traffic on that CH nodes after update
https://imgur.com/sdt8DuJ

we try update to 21.2.2.8 but nothing changes
#include <optional>
namespace CurrentMetrics
{
    extern const Metric BackgroundPoolTask;
}
namespace DB
{
namespace ErrorCodes
{
    extern const int NOT_IMPLEMENTED;
    extern const int LOGICAL_ERROR;
    extern const int NOT_ENOUGH_SPACE;
    extern const int BAD_ARGUMENTS;
    extern const int INCORRECT_DATA;
    extern const int CANNOT_ASSIGN_OPTIMIZE;
    extern const int TIMEOUT_EXCEEDED;
    extern const int UNKNOWN_POLICY;
    extern const int NO_SUCH_DATA_PART;
}
namespace ActionLocks
{
    extern const StorageActionBlockType PartsMerge;
    extern const StorageActionBlockType PartsTTLMerge;
    extern const StorageActionBlockType PartsMove;
}
StorageMergeTree::StorageMergeTree(
    const StorageID & table_id_,
    const String & relative_data_path_,
    const StorageInMemoryMetadata & metadata_,
    bool attach,