diff --git a/be/CMakeLists.txt b/be/CMakeLists.txt
index b9886571dc..c4f0672a53 100644
--- a/be/CMakeLists.txt
+++ b/be/CMakeLists.txt
@@ -579,7 +579,7 @@ FUNCTION(ADD_BE_TEST TEST_NAME)
     TARGET_LINK_LIBRARIES(${TEST_FILE_NAME} ${TEST_LINK_LIBS})
     SET_TARGET_PROPERTIES(${TEST_FILE_NAME} PROPERTIES COMPILE_FLAGS "-fno-access-control")
     if (NOT "${TEST_DIR_NAME}" STREQUAL "")
-        SET_TARGET_PROPERTIES(${TEST_FILE_NAME} PROPERTIES RUNTIME_OUTPUT_DIRECTORY "${BUILD_OUTPUT_ROOT_DIRECTORY}/${DIR_NAME}/${TEST_DIR_NAME}")
+        SET_TARGET_PROPERTIES(${TEST_FILE_NAME} PROPERTIES RUNTIME_OUTPUT_DIRECTORY "${BUILD_OUTPUT_ROOT_DIRECTORY}/${TEST_DIR_NAME}")
     endif()
     ADD_TEST(${TEST_FILE_NAME} "${BUILD_OUTPUT_ROOT_DIRECTORY}/${TEST_NAME}")
 ENDFUNCTION()
diff --git a/be/src/olap/CMakeLists.txt b/be/src/olap/CMakeLists.txt
index e0e1a82e05..51c76663a0 100644
--- a/be/src/olap/CMakeLists.txt
+++ b/be/src/olap/CMakeLists.txt
@@ -83,4 +83,6 @@ add_library(Olap STATIC
     types.cpp 
     utils.cpp
     wrapper_field.cpp
+    rowset/segment_v2/ordinal_page_index.cpp
+    rowset/segment_v2/encoding_info.cpp
 )
diff --git a/be/src/olap/rowset/segment_v2/common.h b/be/src/olap/rowset/segment_v2/common.h
index 892424c266..61e276f2dd 100644
--- a/be/src/olap/rowset/segment_v2/common.h
+++ b/be/src/olap/rowset/segment_v2/common.h
@@ -1,28 +1,29 @@
-// Licensed to the Apache Software Foundation (ASF) under one
-// or more contributor license agreements.  See the NOTICE file
-// distributed with this work for additional information
-// regarding copyright ownership.  The ASF licenses this file
-// to you under the Apache License, Version 2.0 (the
-// "License"); you may not use this file except in compliance
-// with the License.  You may obtain a copy of the License at
-//
-//   http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing,
-// software distributed under the License is distributed on an
-// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-// KIND, either express or implied.  See the License for the
-// specific language governing permissions and limitations
-// under the License.
-
-#pragma once
-
-namespace doris {
-
-namespace segment_v2 {
-
-typedef uint32_t rowid_t;
-
-}  // namespace segment_v2
-
-}  // namespace doris
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+#pragma once
+
+#include <cstdint>
+#include <limits>
+
+namespace doris {
+namespace segment_v2 {
+
+using rowid_t = uint32_t;
+
+}
+}
diff --git a/be/src/olap/rowset/segment_v2/encoding_info.cpp b/be/src/olap/rowset/segment_v2/encoding_info.cpp
new file mode 100644
index 0000000000..33037b10a2
--- /dev/null
+++ b/be/src/olap/rowset/segment_v2/encoding_info.cpp
@@ -0,0 +1,131 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+#include "olap/rowset/segment_v2/encoding_info.h"
+
+#include "olap/olap_common.h"
+
+namespace doris {
+namespace segment_v2 {
+
+struct EncodingMapHash {
+    size_t operator()(const std::pair<FieldType, EncodingTypePB>& pair) const {
+        return (pair.first << 5) ^ pair.second;
+    }
+};
+
+template<FieldType type, EncodingTypePB encoding>
+struct TypeEncodingTraits { };
+
+template<FieldType type>
+struct TypeEncodingTraits<type, PLAIN_ENCODING> {
+    static Status create_page_builder(PageBuilder** builder) {
+        return Status::OK;
+    }
+    static Status create_page_decoder(PageDecoder** decoder) {
+        return Status::OK;
+    }
+};
+
+class EncodingInfoResolver {
+public:
+    EncodingInfoResolver();
+    ~EncodingInfoResolver();
+
+    EncodingTypePB get_default_encoding_type(FieldType type) const {
+        auto it = _default_encoding_type_map.find(type);
+        if (it != std::end(_default_encoding_type_map)) {
+            return it->second;
+        }
+        return DEFAULT_ENCODING;
+    }
+
+    Status get(FieldType data_type, EncodingTypePB encoding_type, const EncodingInfo** out);
+
+private:
+    template<FieldType type, EncodingTypePB encoding_type>
+    void _add_map() {
+        TypeEncodingTraits<type, encoding_type> traits;
+        std::unique_ptr<EncodingInfo> encoding(new EncodingInfo(traits));
+        if (_default_encoding_type_map.find(type) == std::end(_default_encoding_type_map)) {
+            _default_encoding_type_map[type] = encoding_type;
+        }
+        auto key = std::make_pair(type, encoding_type);
+        _encoding_map.emplace(key, encoding.release());
+    }
+
+    std::unordered_map<FieldType, EncodingTypePB, std::hash<int>> _default_encoding_type_map;
+
+    std::unordered_map<std::pair<FieldType, EncodingTypePB>,
+        EncodingInfo*, EncodingMapHash> _encoding_map;
+};
+
+EncodingInfoResolver::EncodingInfoResolver() {
+    _add_map<OLAP_FIELD_TYPE_TINYINT, PLAIN_ENCODING>();
+    _add_map<OLAP_FIELD_TYPE_SMALLINT, PLAIN_ENCODING>();
+    _add_map<OLAP_FIELD_TYPE_INT, PLAIN_ENCODING>();
+    _add_map<OLAP_FIELD_TYPE_BIGINT, PLAIN_ENCODING>();
+    _add_map<OLAP_FIELD_TYPE_LARGEINT, PLAIN_ENCODING>();
+    _add_map<OLAP_FIELD_TYPE_FLOAT, PLAIN_ENCODING>();
+    _add_map<OLAP_FIELD_TYPE_DOUBLE, PLAIN_ENCODING>();
+}
+
+EncodingInfoResolver::~EncodingInfoResolver() {
+    for (auto& it : _encoding_map) {
+        delete it.second;
+    }
+    _encoding_map.clear();
+}
+
+Status EncodingInfoResolver::get(
+        FieldType data_type,
+        EncodingTypePB encoding_type,
+        const EncodingInfo** out) {
+    if (encoding_type == DEFAULT_ENCODING) {
+        encoding_type = get_default_encoding_type(data_type);
+    }
+    auto key = std::make_pair(data_type, encoding_type);
+    auto it = _encoding_map.find(key);
+    if (it == std::end(_encoding_map)) {
+        return Status("fail to find valid type encoding");
+    }
+    *out = it->second;
+    return Status::OK;
+}
+
+static EncodingInfoResolver s_encoding_info_resolver;
+
+template<typename TraitsClass>
+EncodingInfo::EncodingInfo(TraitsClass traits)
+        : _create_buidler_func(TraitsClass::create_page_builder),
+        _create_decoder_func(TraitsClass::create_page_decoder) {
+}
+
+Status EncodingInfo::get(const TypeInfo* type_info,
+                         EncodingTypePB encoding_type,
+                         const EncodingInfo** out) {
+    // TODO(zc): use BIGINT
+    return s_encoding_info_resolver.get(OLAP_FIELD_TYPE_BIGINT, encoding_type, out);
+}
+
+EncodingTypePB EncodingInfo::get_default_encoding_type(const TypeInfo* type_info) {
+    // TODO(zc): use BIGINT
+    return s_encoding_info_resolver.get_default_encoding_type(OLAP_FIELD_TYPE_BIGINT);
+}
+
+}
+}
diff --git a/be/src/olap/rowset/segment_v2/encoding_info.h b/be/src/olap/rowset/segment_v2/encoding_info.h
new file mode 100644
index 0000000000..887636a9a7
--- /dev/null
+++ b/be/src/olap/rowset/segment_v2/encoding_info.h
@@ -0,0 +1,63 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+#pragma once
+
+#include <functional>
+
+#include "common/status.h"
+#include "gen_cpp/segment_v2.pb.h"
+
+namespace doris {
+
+class TypeInfo;
+
+namespace segment_v2 {
+
+class PageBuilder;
+class PageDecoder;
+
+class EncodingInfo {
+public:
+    // Get EncodingInfo for TypeInfo and EncodingTypePB
+    static Status get(const TypeInfo* type_info,
+                      EncodingTypePB encoding_type,
+                      const EncodingInfo** encoding);
+    // Get default type info
+    static EncodingTypePB get_default_encoding_type(const TypeInfo* type_info);
+
+    Status create_page_builder(PageBuilder** builder) const {
+        return _create_buidler_func(builder);
+    }
+    Status create_page_decoder(PageDecoder** decoder) const {
+        return _create_decoder_func(decoder);
+    }
+private:
+    friend class EncodingInfoResolver;
+
+    template<typename TypeEncodingTraits>
+    EncodingInfo(TypeEncodingTraits traits);
+
+    using CreateBuilderFunc = std::function<Status(PageBuilder**)>;
+    CreateBuilderFunc _create_buidler_func;
+
+    using CreateDecoderFunc = std::function<Status(PageDecoder**)>;
+    CreateDecoderFunc _create_decoder_func;
+};
+
+}
+}
diff --git a/be/src/olap/rowset/segment_v2/ordinal_page_index.cpp b/be/src/olap/rowset/segment_v2/ordinal_page_index.cpp
new file mode 100644
index 0000000000..9bd96b1fc0
--- /dev/null
+++ b/be/src/olap/rowset/segment_v2/ordinal_page_index.cpp
@@ -0,0 +1,73 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+#include "olap/rowset/segment_v2/ordinal_page_index.h"
+
+namespace doris {
+namespace segment_v2 {
+
+OrdinalPageIndex::~OrdinalPageIndex() {
+    delete _rowids;
+    delete _pages;
+}
+
+Status OrdinalPageIndex::load() {
+    DCHECK_GE(_data.size, _header_size()) << "block size must greate than header";
+    const uint8_t* ptr = (const uint8_t*)_data.data;
+    const uint8_t* limit = (const uint8_t*)_data.data + _data.size;
+
+    _num_pages = decode_fixed32_le(ptr);
+    ptr += 4;
+
+    _rowids = new rowid_t[_num_pages];
+    _pages = new PagePointer[_num_pages];
+    for (int i = 0; i < _num_pages; ++i) {
+        ptr = decode_varint32_ptr(ptr, limit, &_rowids[i]);
+        if (ptr == nullptr) {
+            return Status("Data corruption");
+        }
+        ptr = _pages[i].decode_from(ptr, limit);
+        if (ptr == nullptr) {
+            return Status("Data corruption");
+        }
+    }
+    return Status::OK;
+}
+
+OrdinalPageIndexIterator OrdinalPageIndex::seek_at_or_before(rowid_t rid) {
+    int32_t left = 0;
+    int32_t right = _num_pages - 1;
+    while (left < right) {
+        int32_t mid = (left + right + 1) / 2;
+
+        if (_rowids[mid] < rid) {
+            left = mid;
+        } else if (_rowids[mid] > rid) {
+            right = mid - 1;
+        } else {
+            left = mid;
+            break;
+        }
+    }
+    if (_rowids[left] > rid) {
+        return OrdinalPageIndexIterator(this, _num_pages);
+    }
+    return OrdinalPageIndexIterator(this, left);
+}
+
+}
+}
diff --git a/be/src/olap/rowset/segment_v2/ordinal_page_index.h b/be/src/olap/rowset/segment_v2/ordinal_page_index.h
new file mode 100644
index 0000000000..a1845ab30c
--- /dev/null
+++ b/be/src/olap/rowset/segment_v2/ordinal_page_index.h
@@ -0,0 +1,133 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+#pragma once
+
+#include <cstdint>
+#include <string>
+
+#include "common/status.h"
+#include "olap/rowset/segment_v2/common.h"
+#include "olap/rowset/segment_v2/page_pointer.h"
+#include "util/coding.h"
+#include "util/slice.h"
+
+namespace doris {
+namespace segment_v2 {
+
+// this class encode ordinal page index
+// the binary format is like that
+// Header | Content
+// Header: 
+//      number of elements (4 Bytes)
+// Content:
+//      array of index_pair
+// index_pair:
+//      Ordinal (4 Bytes)
+//      PagePointer (8 Bytes)
+class OrdinalPageIndexBuilder {
+public:
+    OrdinalPageIndexBuilder() : _num_pages(0) {
+        _buffer.reserve(4 * 1024);
+        // reserve space for number of elements
+        _buffer.resize(4);
+    }
+
+    void append_entry(rowid_t rid, const PagePointer& page) {
+        // rid
+        put_varint32(&_buffer, rid);
+        // page pointer
+        page.encode_to(&_buffer);
+        _num_pages++;
+    }
+
+    Slice finish() {
+        // encoded number of elements
+        encode_fixed32_le((uint8_t*)_buffer.data(), _num_pages);
+        return Slice(_buffer);
+    }
+
+private:
+    std::string _buffer;
+    uint32_t _num_pages;
+};
+
+class OrdinalPageIndex;
+class OrdinalPageIndexIterator {
+public:
+    OrdinalPageIndexIterator(OrdinalPageIndex* index) : _index(index), _cur_idx(-1) { }
+    OrdinalPageIndexIterator(OrdinalPageIndex* index, int cur_idx) : _index(index), _cur_idx(cur_idx) { }
+    inline bool valid() const;
+    inline void next();
+    inline rowid_t rowid() const;
+    inline const PagePointer& page() const;
+private:
+    OrdinalPageIndex* _index;
+    int32_t _cur_idx;
+};
+
+// Page index 
+class OrdinalPageIndex {
+public:
+    OrdinalPageIndex(const Slice& data)
+        : _data(data), _num_pages(0), _rowids(nullptr), _pages(nullptr) {
+    }
+    ~OrdinalPageIndex();
+    
+    Status load();
+
+    OrdinalPageIndexIterator seek_at_or_before(rowid_t rid);
+    OrdinalPageIndexIterator begin() {
+        return OrdinalPageIndexIterator(this);
+    }
+    OrdinalPageIndexIterator end() {
+        return OrdinalPageIndexIterator(this, _num_pages);
+    }
+
+private:
+    uint32_t _header_size() const { return 4; }
+
+private:
+    friend OrdinalPageIndexIterator;
+
+    Slice _data;
+
+    // valid after laod
+    int32_t _num_pages;
+    rowid_t* _rowids;
+    PagePointer* _pages;
+};
+
+inline bool OrdinalPageIndexIterator::valid() const {
+    return _cur_idx < _index->_num_pages;
+}
+
+inline void OrdinalPageIndexIterator::next() {
+    _cur_idx++;
+    DCHECK_LT(_cur_idx, _index->_num_pages);
+}
+
+inline rowid_t OrdinalPageIndexIterator::rowid() const {
+    return _index->_rowids[_cur_idx];
+}
+
+inline const PagePointer& OrdinalPageIndexIterator::page() const {
+    return _index->_pages[_cur_idx];
+}
+
+}
+}
diff --git a/be/src/olap/rowset/segment_v2/page_pointer.h b/be/src/olap/rowset/segment_v2/page_pointer.h
new file mode 100644
index 0000000000..339ba45e88
--- /dev/null
+++ b/be/src/olap/rowset/segment_v2/page_pointer.h
@@ -0,0 +1,58 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+#pragma once
+
+#include <cstdint>
+
+#include "gen_cpp/segment_v2.pb.h"
+#include "util/coding.h"
+
+namespace doris {
+namespace segment_v2 {
+
+struct PagePointer {
+    uint64_t offset;
+    uint32_t size;
+
+    PagePointer() : offset(0), size(0) { }
+    PagePointer(uint64_t offset_, uint32_t size_) : offset(offset_), size(size_) { }
+    PagePointer(const PagePointerPB& from) : offset(from.offset()), size(from.size()) { }
+
+    void to_proto(PagePointerPB* to) {
+        to->set_offset(offset);
+        to->set_size(size);
+    }
+
+    const uint8_t* decode_from(const uint8_t* data, const uint8_t* limit) {
+        data = decode_varint64_ptr(data, limit, &offset);
+        if (data == nullptr) {
+            return nullptr;
+        }
+        return decode_varint32_ptr(data, limit, &size);
+    }
+    void encode_to(std::string* dst) const {
+        put_varint64_varint32(dst, offset, size);
+    }
+
+    bool operator==(const PagePointer& other) const {
+        return offset == other.offset && size == other.size;
+    }
+};
+
+}
+}
diff --git a/be/test/olap/CMakeLists.txt b/be/test/olap/CMakeLists.txt
index 921c1dbedd..3084c03f04 100644
--- a/be/test/olap/CMakeLists.txt
+++ b/be/test/olap/CMakeLists.txt
@@ -44,3 +44,5 @@ ADD_BE_TEST(serialize_test)
 ADD_BE_TEST(olap_meta_test)
 ADD_BE_TEST(olap_header_manager_test)
 ADD_BE_TEST(field_info_test)
+ADD_BE_TEST(rowset/segment_v2/ordinal_page_index_test)
+ADD_BE_TEST(rowset/segment_v2/encoding_info_test)
diff --git a/be/test/olap/rowset/segment_v2/encoding_info_test.cpp b/be/test/olap/rowset/segment_v2/encoding_info_test.cpp
new file mode 100644
index 0000000000..b4690f48d5
--- /dev/null
+++ b/be/test/olap/rowset/segment_v2/encoding_info_test.cpp
@@ -0,0 +1,59 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+#include "olap/rowset/segment_v2/encoding_info.h"
+
+#include <gtest/gtest.h>
+#include <iostream>
+
+#include "common/logging.h"
+#include "olap/olap_common.h"
+#include "olap/types.h"
+
+namespace doris {
+namespace segment_v2 {
+
+class EncodingInfoTest : public testing::Test {
+public:
+    EncodingInfoTest() { }
+    virtual ~EncodingInfoTest() {
+    }
+};
+
+TEST_F(EncodingInfoTest, normal) {
+    auto type_info = get_type_info(OLAP_FIELD_TYPE_BIGINT);
+    const EncodingInfo* encoding_info = nullptr;
+    auto status = EncodingInfo::get(type_info, PLAIN_ENCODING, &encoding_info);
+    ASSERT_TRUE(status.ok());
+    ASSERT_NE(nullptr, encoding_info);
+}
+
+TEST_F(EncodingInfoTest, no_encoding) {
+    auto type_info = get_type_info(OLAP_FIELD_TYPE_BIGINT);
+    const EncodingInfo* encoding_info = nullptr;
+    auto status = EncodingInfo::get(type_info, DICT_ENCODING, &encoding_info);
+    ASSERT_FALSE(status.ok());
+}
+
+}
+}
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}
+
diff --git a/be/test/olap/rowset/segment_v2/ordinal_page_index_test.cpp b/be/test/olap/rowset/segment_v2/ordinal_page_index_test.cpp
new file mode 100644
index 0000000000..f2789621a8
--- /dev/null
+++ b/be/test/olap/rowset/segment_v2/ordinal_page_index_test.cpp
@@ -0,0 +1,105 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+#include "olap/rowset/segment_v2/ordinal_page_index.h"
+
+#include <gtest/gtest.h>
+#include <iostream>
+
+#include "common/logging.h"
+
+namespace doris {
+namespace segment_v2 {
+
+class OrdinalPageIndexTest : public testing::Test {
+public:
+    OrdinalPageIndexTest() { }
+    virtual ~OrdinalPageIndexTest() {
+    }
+};
+
+TEST_F(OrdinalPageIndexTest, normal) {
+    //    rowid, page pointer
+    //        1, (0, 4096)
+    // 1 + 4096, (1 * 4096, 4096)
+    // a page have 16KB, and have 4096 rows
+    OrdinalPageIndexBuilder builder;
+
+    // we test a 16KB page
+    for (uint64_t i = 0; i < 16 * 1024; ++i) {
+        builder.append_entry(1 + 4096 * i, {16 * 1024 * i, 16 * 1024});
+    }
+
+    auto slice = builder.finish();
+    LOG(INFO) << "index block's size=" << slice.size;
+
+    OrdinalPageIndex index(slice);
+    auto st = index.load();
+    ASSERT_TRUE(st.ok());
+
+    PagePointer page;
+    {
+        auto iter = index.seek_at_or_before(1);
+        ASSERT_TRUE(iter.valid());
+        ASSERT_EQ(1, iter.rowid());
+        ASSERT_EQ(PagePointer(0, 16 * 1024), iter.page());
+    }
+    {
+        auto iter = index.seek_at_or_before(4095);
+        ASSERT_TRUE(iter.valid());
+        ASSERT_EQ(1, iter.rowid());
+        ASSERT_EQ(PagePointer(0, 16 * 1024), iter.page());
+    }
+    {
+        auto iter = index.seek_at_or_before(4098);
+        ASSERT_TRUE(iter.valid());
+        ASSERT_EQ(4097, iter.rowid());
+        ASSERT_EQ(PagePointer(1 * 16 * 1024, 16 * 1024), iter.page());
+
+        iter.next();
+        ASSERT_TRUE(iter.valid());
+        ASSERT_EQ(4097 + 4096, iter.rowid());
+        ASSERT_EQ(PagePointer(2 * 16 * 1024, 16 * 1024), iter.page());
+
+    }
+
+    {
+        auto iter = index.seek_at_or_before(0);
+        ASSERT_FALSE(iter.valid());
+    }
+}
+
+TEST_F(OrdinalPageIndexTest, corrupt) {
+    std::string str;
+    str.resize(4);
+
+    encode_fixed32_le((uint8_t*)str.data(), 1);
+
+    Slice slice(str);
+    OrdinalPageIndex index(slice);
+    auto st = index.load();
+    ASSERT_FALSE(st.ok());
+}
+
+}
+}
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}
+
diff --git a/gensrc/proto/segment_v2.proto b/gensrc/proto/segment_v2.proto
index 68603b54e3..5057ee7f19 100644
--- a/gensrc/proto/segment_v2.proto
+++ b/gensrc/proto/segment_v2.proto
@@ -16,6 +16,8 @@
 // under the License.
 // Define file format struct, like data header, index header.
 
+syntax="proto2";
+
 package doris.segment_v2;
 
 message ColumnSchemaPB {
@@ -35,7 +37,7 @@ message ColumnSchemaPB {
 // page position info
 message PagePointerPB {
     required uint64 offset = 1; // offset in segment file
-    required uint32 length = 2; // size of page in byte
+    required uint32 size = 2; // size of page in byte
 }
 
 message MetadataPairPB {
@@ -44,23 +46,23 @@ message MetadataPairPB {
 }
 
 enum EncodingTypePB {
-    PLAIN_ENCODING = 1;
-    PREFIX_ENCODING = 2;
+    UNKNOWN_ENCODING = 0;
+    DEFAULT_ENCODING = 1;
+    PLAIN_ENCODING = 2;
+    PREFIX_ENCODING = 3;
     RLE = 4;
     DICT_ENCODING = 5;
     BIT_SHUFFLE = 6;
-    UNKNOWN_ENCODING = 1000;
 }
 
 enum CompressionTypePB {
-    DEFAULT_COMPRESSION = 0;
-    NO_COMPRESSION = 1;
-    SNAPPY = 2;
-    LZ4 = 3;
-    ZLIB = 4;
-    ZSTB = 5;
-    LZO = 6;
-    UNKNOWN_COMPRESSION = 1000;
+    UNKNOWN_COMPRESSION = 0;
+    DEFAULT_COMPRESSION = 1;
+    NO_COMPRESSION = 2;
+    SNAPPY = 3;
+    LZ4 = 4;
+    ZLIB = 5;
+    ZSTB = 6;
 }
 
 message ZoneMapPB {
@@ -70,23 +72,34 @@ message ZoneMapPB {
 }
 
 message ColumnMetaPB {
-    optional EncodingTypePB encoding = 1;
+    // this field is FieldType's value
+    optional int32 type = 1;
+    optional EncodingTypePB encoding = 2;
+    // compress type for column
+    optional CompressionTypePB compress_type = 3;
+    // if this column can be nullable
+    optional bool is_nullable = 4;
 
-    optional PagePointerPB dict_page = 2;// dictionary page for DICT_ENCODING
-    repeated PagePointerPB bloom_filter_pages = 3; // bloom filter pages for bloom filter column
-    optional PagePointerPB ordinal_index_page = 4; // ordinal index page
-    optional PagePointerPB page_zonemap_page = 5; // page zonemap info of column
+    // // dictionary page for DICT_ENCODING
+    // optional PagePointerPB dict_page = 2;
 
-    optional PagePointerPB bitmap_index_page = 6; // bitmap index page
+    // // bloom filter pages for bloom filter column
+    // repeated PagePointerPB bloom_filter_pages = 3;
 
-    optional uint64 data_footprint = 7; // data footprint of column after encoding and compress
-    optional uint64 index_footprint = 8; // index footprint of column after encoding and compress
-    optional uint64 raw_data_footprint = 9; // raw column data footprint
+    // optional PagePointerPB ordinal_index_page = 4; // ordinal index page
+    // optional PagePointerPB page_zonemap_page = 5; // page zonemap info of column
 
-    optional CompressionTypePB compress_type = 10; // compress type for column
+    // optional PagePointerPB bitmap_index_page = 6; // bitmap index page
 
-    optional ZoneMapPB column_zonemap = 11; // column zonemap info
-    repeated MetadataPairPB column_meta_datas = 12;
+    // // data footprint of column after encoding and compress
+    // optional uint64 data_footprint = 7;
+    // // index footprint of column after encoding and compress
+    // optional uint64 index_footprint = 8;
+    // // raw column data footprint
+    // optional uint64 raw_data_footprint = 9;
+
+    // optional ZoneMapPB column_zonemap = 11; // column zonemap info
+    // repeated MetadataPairPB column_meta_datas = 12;
 }
 
 message FileFooterPB {
diff --git a/run-ut.sh b/run-ut.sh
index 001622bff6..326aff2b0a 100755
--- a/run-ut.sh
+++ b/run-ut.sh
@@ -228,6 +228,8 @@ ${DORIS_TEST_BINARY_DIR}/olap/olap_header_manager_test
 ${DORIS_TEST_BINARY_DIR}/olap/olap_meta_test
 ${DORIS_TEST_BINARY_DIR}/olap/delta_writer_test
 ${DORIS_TEST_BINARY_DIR}/olap/field_info_test
+${DORIS_TEST_BINARY_DIR}/olap/rowset/segment_v2/encoding_info_test
+${DORIS_TEST_BINARY_DIR}/olap/rowset/segment_v2/ordinal_page_index_test
 
 # Running routine load test
 ${DORIS_TEST_BINARY_DIR}/runtime/kafka_consumer_pipe_test