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Posted to commits@doris.apache.org by GitBox <gi...@apache.org> on 2022/03/02 07:00:45 UTC

[GitHub] [incubator-doris] zuochunwei opened a new pull request #8292: (improving) refactor column::insert_many_dict_data

zuochunwei opened a new pull request #8292:
URL: https://github.com/apache/incubator-doris/pull/8292


   # Proposed changes
   
   i have tested this changes by adding global atomic timer: clock_gettime(CLOCK_MONOTONIC, &ts);
   
   before vs after modifying,  test sql ssb Q2.1
   SELECT sum(lo_revenue), year(lo_orderdate) AS year,  p_brand 
   FROM lineorder_flat 
   WHERE p_category = 'MFGR#12' AND s_region = 'AMERICA' 
   GROUP BY year,  p_brand 
   ORDER BY year, p_brand;
   
   result:
   PredicateColumnType::insert_many_dict_data() 11970424864 vs 8907241614  
   ColumnString::insert_many_dict_data                 3044568165 vs 2467506128 
   
   Issue Number: close #xxx
   
   ## Problem Summary:
   
   Describe the overview of changes.
   
   ## Checklist(Required)
   
   1. Does it affect the original behavior: (Yes/No/I Don't know)
   2. Has unit tests been added: (Yes/No/No Need)
   3. Has document been added or modified: (Yes/No/No Need)
   4. Does it need to update dependencies: (Yes/No)
   5. Are there any changes that cannot be rolled back: (Yes/No)
   
   ## Further comments
   
   If this is a relatively large or complex change, kick off the discussion at [dev@doris.apache.org](mailto:dev@doris.apache.org) by explaining why you chose the solution you did and what alternatives you considered, etc...
   


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[GitHub] [incubator-doris] spaces-X commented on a change in pull request #8292: (improving) refactor column::insert_many_dict_data

Posted by GitBox <gi...@apache.org>.
spaces-X commented on a change in pull request #8292:
URL: https://github.com/apache/incubator-doris/pull/8292#discussion_r817407427



##########
File path: be/src/vec/columns/column_string.h
##########
@@ -32,6 +32,8 @@
 #include "vec/common/sip_hash.h"
 #include "vec/core/field.h"
 
+#include "../../util/mem_util.hpp"

Review comment:
       Maybe it's better to use an absolute path?




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[GitHub] [incubator-doris] zbtzbtzbt commented on a change in pull request #8292: (improving) refactor column::insert_many_dict_data

Posted by GitBox <gi...@apache.org>.
zbtzbtzbt commented on a change in pull request #8292:
URL: https://github.com/apache/incubator-doris/pull/8292#discussion_r818284576



##########
File path: be/src/vec/columns/column_string.h
##########
@@ -32,6 +32,8 @@
 #include "vec/common/sip_hash.h"
 #include "vec/core/field.h"
 
+#include "../../util/mem_util.hpp"

Review comment:
       `#include "util/mem_util.hpp"` also works.




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[GitHub] [incubator-doris] zuochunwei commented on a change in pull request #8292: (improving) refactor column::insert_many_dict_data

Posted by GitBox <gi...@apache.org>.
zuochunwei commented on a change in pull request #8292:
URL: https://github.com/apache/incubator-doris/pull/8292#discussion_r817593797



##########
File path: be/src/vec/columns/column_string.h
##########
@@ -165,10 +167,33 @@ class ColumnString final : public COWHelper<IColumn, ColumnString> {
         }
     };
  
-    void insert_many_dict_data(const int32_t* data_array, size_t start_index, const StringRef* dict, size_t num) override {
-        for (size_t end_index = start_index+num; start_index < end_index; ++start_index) {
-            int32_t codeword = data_array[start_index];
-            insert_data(dict[codeword].data, dict[codeword].size);
+    void insert_many_dict_data(const int32_t* __restrict data_array, size_t start_index, const StringRef* __restrict dict, size_t num) override {
+        size_t index = start_index;
+        const size_t end = start_index + num;
+
+        // handle offsets
+        size_t old_size = offsets.size();
+        offsets.resize(old_size + num);
+
+        size_t chars_old_size = chars.size();
+        size_t chars_new_size = chars_old_size;
+        for (; index < end; ++index) {
+            int32_t codeword = data_array[index];
+            chars_new_size += (dict[codeword].size + 1); // extra 1 for zero ending
+            offsets[old_size++] = chars_new_size;
+        }
+
+        // handle chars
+        chars.resize(chars_new_size);
+        unsigned char* c_data = chars.data();
+
+        index = start_index;

Review comment:
       clocks计数




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[GitHub] [incubator-doris] zuochunwei commented on a change in pull request #8292: (improving) refactor column::insert_many_dict_data

Posted by GitBox <gi...@apache.org>.
zuochunwei commented on a change in pull request #8292:
URL: https://github.com/apache/incubator-doris/pull/8292#discussion_r821442814



##########
File path: be/src/vec/columns/column_string.h
##########
@@ -32,6 +32,8 @@
 #include "vec/common/sip_hash.h"
 #include "vec/core/field.h"
 
+#include "../../util/mem_util.hpp"

Review comment:
       ok




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[GitHub] [incubator-doris] wangbo removed a comment on pull request #8292: (improving) refactor column::insert_many_dict_data

Posted by GitBox <gi...@apache.org>.
wangbo removed a comment on pull request #8292:
URL: https://github.com/apache/incubator-doris/pull/8292#issuecomment-1062506688


   I feel that this pr will improve performance when reading string column without conditions, because this pr removed branch judgment when writing data to ColumString's offsets;
   We can see no performance improvement for query 2.1 because the amount of data written to Columnstring after predicate pruning is already very small.
   I will test for this case later.


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[GitHub] [incubator-doris] wangbo commented on pull request #8292: (improving) refactor column::insert_many_dict_data

Posted by GitBox <gi...@apache.org>.
wangbo commented on pull request #8292:
URL: https://github.com/apache/incubator-doris/pull/8292#issuecomment-1056449402


   Please add ```BlockLoadTime``` Timer for performance improvement.


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[GitHub] [incubator-doris] zbtzbtzbt commented on a change in pull request #8292: (improving) refactor column::insert_many_dict_data

Posted by GitBox <gi...@apache.org>.
zbtzbtzbt commented on a change in pull request #8292:
URL: https://github.com/apache/incubator-doris/pull/8292#discussion_r818267646



##########
File path: be/src/vec/columns/column_string.h
##########
@@ -32,6 +32,8 @@
 #include "vec/common/sip_hash.h"
 #include "vec/core/field.h"
 
+#include "../../util/mem_util.hpp"

Review comment:
       +1




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[GitHub] [incubator-doris] zbtzbtzbt commented on a change in pull request #8292: (improving) refactor column::insert_many_dict_data

Posted by GitBox <gi...@apache.org>.
zbtzbtzbt commented on a change in pull request #8292:
URL: https://github.com/apache/incubator-doris/pull/8292#discussion_r818268350



##########
File path: be/src/vec/columns/column.h
##########
@@ -174,7 +174,7 @@ class IColumn : public COW<IColumn> {
       LOG(FATAL) << "Method insert_many_fix_len_data is not supported for " << get_name();
     }
  
-    virtual void insert_many_dict_data(const int32_t* data_array, size_t start_index, const StringRef* dict, size_t num) {
+    virtual void insert_many_dict_data(const int32_t* __restrict data_array, size_t start_index, const StringRef* __restrict dict, size_t num) {

Review comment:
       I think here `__restrict` is useless, because function is null.




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[GitHub] [incubator-doris] wangbo edited a comment on pull request #8292: (improving) refactor column::insert_many_dict_data

Posted by GitBox <gi...@apache.org>.
wangbo edited a comment on pull request #8292:
URL: https://github.com/apache/incubator-doris/pull/8292#issuecomment-1056449402


   Please add ```BlockLoadTime``` Timer for performance improvement.
   I don't know what does ```11970424864 vs 8907241614``` means.


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[GitHub] [incubator-doris] wangbo commented on pull request #8292: (improving) refactor column::insert_many_dict_data

Posted by GitBox <gi...@apache.org>.
wangbo commented on pull request #8292:
URL: https://github.com/apache/incubator-doris/pull/8292#issuecomment-1062506689






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[GitHub] [incubator-doris] zuochunwei commented on a change in pull request #8292: (improving) refactor column::insert_many_dict_data

Posted by GitBox <gi...@apache.org>.
zuochunwei commented on a change in pull request #8292:
URL: https://github.com/apache/incubator-doris/pull/8292#discussion_r817593579



##########
File path: be/src/vec/columns/column_string.h
##########
@@ -165,10 +167,33 @@ class ColumnString final : public COWHelper<IColumn, ColumnString> {
         }
     };
  
-    void insert_many_dict_data(const int32_t* data_array, size_t start_index, const StringRef* dict, size_t num) override {
-        for (size_t end_index = start_index+num; start_index < end_index; ++start_index) {
-            int32_t codeword = data_array[start_index];
-            insert_data(dict[codeword].data, dict[codeword].size);
+    void insert_many_dict_data(const int32_t* __restrict data_array, size_t start_index, const StringRef* __restrict dict, size_t num) override {
+        size_t index = start_index;
+        const size_t end = start_index + num;
+
+        // handle offsets
+        size_t old_size = offsets.size();
+        offsets.resize(old_size + num);
+
+        size_t chars_old_size = chars.size();
+        size_t chars_new_size = chars_old_size;
+        for (; index < end; ++index) {
+            int32_t codeword = data_array[index];
+            chars_new_size += (dict[codeword].size + 1); // extra 1 for zero ending
+            offsets[old_size++] = chars_new_size;
+        }
+
+        // handle chars
+        chars.resize(chars_new_size);
+        unsigned char* c_data = chars.data();
+
+        index = start_index;

Review comment:
       > Please add `BlockLoadTime` Timer for performance improvement. I don't know what does `11970424864 vs 8907241614` means.
   
   我用一个atomic_uint64的全局变量,累加了这个函数的开销




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[GitHub] [incubator-doris] levy5307 commented on a change in pull request #8292: (improving) refactor column::insert_many_dict_data

Posted by GitBox <gi...@apache.org>.
levy5307 commented on a change in pull request #8292:
URL: https://github.com/apache/incubator-doris/pull/8292#discussion_r817516579



##########
File path: be/src/vec/columns/column_string.h
##########
@@ -165,10 +167,33 @@ class ColumnString final : public COWHelper<IColumn, ColumnString> {
         }
     };
  
-    void insert_many_dict_data(const int32_t* data_array, size_t start_index, const StringRef* dict, size_t num) override {
-        for (size_t end_index = start_index+num; start_index < end_index; ++start_index) {
-            int32_t codeword = data_array[start_index];
-            insert_data(dict[codeword].data, dict[codeword].size);
+    void insert_many_dict_data(const int32_t* __restrict data_array, size_t start_index, const StringRef* __restrict dict, size_t num) override {
+        size_t index = start_index;
+        const size_t end = start_index + num;
+
+        // handle offsets
+        size_t old_size = offsets.size();
+        offsets.resize(old_size + num);
+
+        size_t chars_old_size = chars.size();
+        size_t chars_new_size = chars_old_size;
+        for (; index < end; ++index) {
+            int32_t codeword = data_array[index];
+            chars_new_size += (dict[codeword].size + 1); // extra 1 for zero ending
+            offsets[old_size++] = chars_new_size;
+        }
+
+        // handle chars
+        chars.resize(chars_new_size);
+        unsigned char* c_data = chars.data();
+
+        index = start_index;
+        for (; index < end; ++index) {
+            int32_t codeword = data_array[index];

Review comment:
       better to use auto for codeword: 
   ```
   auto codeword = data_array[index];
   ```




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[GitHub] [incubator-doris] zbtzbtzbt commented on a change in pull request #8292: (improving) refactor column::insert_many_dict_data

Posted by GitBox <gi...@apache.org>.
zbtzbtzbt commented on a change in pull request #8292:
URL: https://github.com/apache/incubator-doris/pull/8292#discussion_r818268350



##########
File path: be/src/vec/columns/column.h
##########
@@ -174,7 +174,7 @@ class IColumn : public COW<IColumn> {
       LOG(FATAL) << "Method insert_many_fix_len_data is not supported for " << get_name();
     }
  
-    virtual void insert_many_dict_data(const int32_t* data_array, size_t start_index, const StringRef* dict, size_t num) {
+    virtual void insert_many_dict_data(const int32_t* __restrict data_array, size_t start_index, const StringRef* __restrict dict, size_t num) {

Review comment:
       I think here `__restrict` is useless, because function is null.




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[GitHub] [incubator-doris] zuochunwei commented on a change in pull request #8292: (improving) refactor column::insert_many_dict_data

Posted by GitBox <gi...@apache.org>.
zuochunwei commented on a change in pull request #8292:
URL: https://github.com/apache/incubator-doris/pull/8292#discussion_r817593579



##########
File path: be/src/vec/columns/column_string.h
##########
@@ -165,10 +167,33 @@ class ColumnString final : public COWHelper<IColumn, ColumnString> {
         }
     };
  
-    void insert_many_dict_data(const int32_t* data_array, size_t start_index, const StringRef* dict, size_t num) override {
-        for (size_t end_index = start_index+num; start_index < end_index; ++start_index) {
-            int32_t codeword = data_array[start_index];
-            insert_data(dict[codeword].data, dict[codeword].size);
+    void insert_many_dict_data(const int32_t* __restrict data_array, size_t start_index, const StringRef* __restrict dict, size_t num) override {
+        size_t index = start_index;
+        const size_t end = start_index + num;
+
+        // handle offsets
+        size_t old_size = offsets.size();
+        offsets.resize(old_size + num);
+
+        size_t chars_old_size = chars.size();
+        size_t chars_new_size = chars_old_size;
+        for (; index < end; ++index) {
+            int32_t codeword = data_array[index];
+            chars_new_size += (dict[codeword].size + 1); // extra 1 for zero ending
+            offsets[old_size++] = chars_new_size;
+        }
+
+        // handle chars
+        chars.resize(chars_new_size);
+        unsigned char* c_data = chars.data();
+
+        index = start_index;

Review comment:
       > Please add `BlockLoadTime` Timer for performance improvement. I don't know what does `11970424864 vs 8907241614` means.
   
   我用一个atomic_uint64的全局变量,累加了这个函数的开销

##########
File path: be/src/vec/columns/column_string.h
##########
@@ -165,10 +167,33 @@ class ColumnString final : public COWHelper<IColumn, ColumnString> {
         }
     };
  
-    void insert_many_dict_data(const int32_t* data_array, size_t start_index, const StringRef* dict, size_t num) override {
-        for (size_t end_index = start_index+num; start_index < end_index; ++start_index) {
-            int32_t codeword = data_array[start_index];
-            insert_data(dict[codeword].data, dict[codeword].size);
+    void insert_many_dict_data(const int32_t* __restrict data_array, size_t start_index, const StringRef* __restrict dict, size_t num) override {
+        size_t index = start_index;
+        const size_t end = start_index + num;
+
+        // handle offsets
+        size_t old_size = offsets.size();
+        offsets.resize(old_size + num);
+
+        size_t chars_old_size = chars.size();
+        size_t chars_new_size = chars_old_size;
+        for (; index < end; ++index) {
+            int32_t codeword = data_array[index];
+            chars_new_size += (dict[codeword].size + 1); // extra 1 for zero ending
+            offsets[old_size++] = chars_new_size;
+        }
+
+        // handle chars
+        chars.resize(chars_new_size);
+        unsigned char* c_data = chars.data();
+
+        index = start_index;

Review comment:
       clocks计数




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[GitHub] [incubator-doris] levy5307 commented on a change in pull request #8292: (improving) refactor column::insert_many_dict_data

Posted by GitBox <gi...@apache.org>.
levy5307 commented on a change in pull request #8292:
URL: https://github.com/apache/incubator-doris/pull/8292#discussion_r817516069



##########
File path: be/src/vec/columns/column_string.h
##########
@@ -165,10 +167,33 @@ class ColumnString final : public COWHelper<IColumn, ColumnString> {
         }
     };
  
-    void insert_many_dict_data(const int32_t* data_array, size_t start_index, const StringRef* dict, size_t num) override {
-        for (size_t end_index = start_index+num; start_index < end_index; ++start_index) {
-            int32_t codeword = data_array[start_index];
-            insert_data(dict[codeword].data, dict[codeword].size);
+    void insert_many_dict_data(const int32_t* __restrict data_array, size_t start_index, const StringRef* __restrict dict, size_t num) override {
+        size_t index = start_index;
+        const size_t end = start_index + num;
+
+        // handle offsets
+        size_t old_size = offsets.size();
+        offsets.resize(old_size + num);
+
+        size_t chars_old_size = chars.size();
+        size_t chars_new_size = chars_old_size;
+        for (; index < end; ++index) {
+            int32_t codeword = data_array[index];
+            chars_new_size += (dict[codeword].size + 1); // extra 1 for zero ending
+            offsets[old_size++] = chars_new_size;
+        }
+
+        // handle chars
+        chars.resize(chars_new_size);
+        unsigned char* c_data = chars.data();
+
+        index = start_index;

Review comment:
       ``` 
          index = start_index;
           for (; index < end; ++index) 
   ```
   ==>
   ```for (index = start_index; index < end; ++index)```




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[GitHub] [incubator-doris] wangbo commented on pull request #8292: (improving) refactor column::insert_many_dict_data

Posted by GitBox <gi...@apache.org>.
wangbo commented on pull request #8292:
URL: https://github.com/apache/incubator-doris/pull/8292#issuecomment-1056832065


   I will try to test this pr to confirm the performance improvement, it will take some time


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[GitHub] [incubator-doris] wangbo commented on pull request #8292: (improving) refactor column::insert_many_dict_data

Posted by GitBox <gi...@apache.org>.
wangbo commented on pull request #8292:
URL: https://github.com/apache/incubator-doris/pull/8292#issuecomment-1060312019


   We did a performance test for this pr in SSB, no significant improvement. 


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