diff --git a/dbms/src/Storages/MergeTree/MergeTreeDataMergerMutator.cpp b/dbms/src/Storages/MergeTree/MergeTreeDataMergerMutator.cpp
index 1eb70920756..86b81b9c856 100644
--- a/dbms/src/Storages/MergeTree/MergeTreeDataMergerMutator.cpp
+++ b/dbms/src/Storages/MergeTree/MergeTreeDataMergerMutator.cpp
@@ -1039,7 +1039,6 @@ MergeTreeData::MutableDataPartPtr MergeTreeDataMergerMutator::mutatePartToTempor
         new_data_part->index = source_part->index;
         new_data_part->partition.assign(source_part->partition);
         new_data_part->minmax_idx = source_part->minmax_idx;
-        new_data_part->index_parts = source_part->index_parts;
         new_data_part->modification_time = time(nullptr);
         new_data_part->bytes_on_disk = MergeTreeData::DataPart::calculateTotalSizeOnDisk(new_data_part->getFullPath());
     }
diff --git a/dbms/src/Storages/MergeTree/MergeTreeDataPart.h b/dbms/src/Storages/MergeTree/MergeTreeDataPart.h
index 1ae6aa602d0..90ea11e4141 100644
--- a/dbms/src/Storages/MergeTree/MergeTreeDataPart.h
+++ b/dbms/src/Storages/MergeTree/MergeTreeDataPart.h
@@ -208,8 +208,6 @@ struct MergeTreeDataPart
 
     MinMaxIndex minmax_idx;
 
-    MergeTreeIndexParts index_parts;
-
     Checksums checksums;
 
     /// Columns description.
diff --git a/dbms/src/Storages/MergeTree/MergeTreeDataSelectExecutor.cpp b/dbms/src/Storages/MergeTree/MergeTreeDataSelectExecutor.cpp
index 4eff75e567d..e38b92e1807 100644
--- a/dbms/src/Storages/MergeTree/MergeTreeDataSelectExecutor.cpp
+++ b/dbms/src/Storages/MergeTree/MergeTreeDataSelectExecutor.cpp
@@ -530,8 +530,8 @@ namespace DB
 
             /// It can be done in multiple threads (one thread for each part).
             /// Maybe it should be moved to BlockInputStream, but it can cause some problems.
-            for (auto index_part : part->index_parts) {
-                auto condition = index_part->createIndexConditionOnPart(query_info, context);
+            for (auto index : data.indexes) {
+                auto condition = index->createIndexConditionOnPart(query_info, context);
                 if (!condition->alwaysUnknownOrTrue()) {
                     ranges.ranges = condition->filterRanges(ranges.ranges);
                 }
diff --git a/dbms/src/Storages/MergeTree/MergeTreeIndexes.cpp b/dbms/src/Storages/MergeTree/MergeTreeIndexes.cpp
index f1ba281a747..c73999c2e3e 100644
--- a/dbms/src/Storages/MergeTree/MergeTreeIndexes.cpp
+++ b/dbms/src/Storages/MergeTree/MergeTreeIndexes.cpp
@@ -12,11 +12,6 @@ namespace ErrorCodes
 
 
 IndexType IndexCondition::indexType() const {
-    return part->indexType();
-}
-
-
-IndexType MergeTreeIndexPart::indexType() const {
     return index->indexType();
 }
 
diff --git a/dbms/src/Storages/MergeTree/MergeTreeIndexes.h b/dbms/src/Storages/MergeTree/MergeTreeIndexes.h
index 30fe6fb1cda..c0262794fa0 100644
--- a/dbms/src/Storages/MergeTree/MergeTreeIndexes.h
+++ b/dbms/src/Storages/MergeTree/MergeTreeIndexes.h
@@ -21,20 +21,16 @@ enum class IndexType {
 
 
 class MergeTreeIndex;
-struct MergeTreeIndexPart;
 
 using MergeTreeIndexPtr = std::shared_ptr<const MergeTreeIndex>;
 using MutableMergeTreeIndexPtr = std::shared_ptr<MergeTreeIndex>;
 using MergeTreeIndexes = std::vector<MutableMergeTreeIndexPtr>;
 
-using MergeTreeIndexPartPtr = std::shared_ptr<MergeTreeIndexPart>;
-using MergeTreeIndexParts = std::vector<MergeTreeIndexPartPtr>;
-
 
 /// Condition on the index.
 /// It works only with one indexPart (MergeTreeDataPart).
 class IndexCondition {
-    friend MergeTreeIndexPart;
+    friend MergeTreeIndex;
 
 public:
     virtual ~IndexCondition() = default;
@@ -51,7 +47,7 @@ protected:
     IndexCondition() = default;
 
 public:
-    MergeTreeIndexPartPtr part;
+    MergeTreeIndexPtr index;
 };
 
 using IndexConditionPtr = std::shared_ptr<IndexCondition>;
@@ -59,7 +55,7 @@ using IndexConditionPtr = std::shared_ptr<IndexCondition>;
 
 struct MergeTreeIndexGranule
 {
-    friend MergeTreeIndexPart;
+    friend MergeTreeIndex;
 
 public:
     virtual ~MergeTreeIndexGranule();
@@ -76,28 +72,6 @@ using MergeTreeIndexGranulePtr = std::shared_ptr<MergeTreeIndexGranule>;
 using MergeTreeIndexGranules = std::vector<MergeTreeIndexGranulePtr>;
 
 
-/// Data structure for operations with index data for each MergeTreeDataPart.
-/// Stores information specific for DataPart.
-/// Возможно будет убран.
-struct MergeTreeIndexPart
-{
-    friend MergeTreeIndex;
-
-public:
-    MergeTreeIndexPart() = default;
-    virtual ~MergeTreeIndexPart() = default;
-
-    IndexType indexType() const;
-
-    virtual MergeTreeIndexPartPtr cloneEmpty() const = 0;
-
-    virtual IndexConditionPtr createIndexConditionOnPart(
-            const SelectQueryInfo & query_info, const Context & context) const = 0;
-
-    MergeTreeIndexPtr index;
-};
-
-
 /// Structure for storing basic index info like columns, expression, arguments, ...
 class MergeTreeIndex
 {
@@ -111,6 +85,9 @@ public:
 
     virtual MergeTreeIndexGranulePtr createIndexGranule() const = 0;
 
+    virtual IndexConditionPtr createIndexConditionOnPart(
+            const SelectQueryInfo & query_info, const Context & context) const = 0;
+
     String name;
     ExpressionActionsPtr expr;
     size_t granularity;