[GitHub] [incubator-pegasus] WHBANG commented on a diff in pull request #1108: fix: rocksdb options not changed even if update in Pegasus config file

[GitBox]

WHBANG commented on code in PR #1108:
URL: https://github.com/apache/incubator-pegasus/pull/1108#discussion_r945116285


##########
src/server/pegasus_server_impl.cpp:
##########
@@ -3007,6 +3013,97 @@ void pegasus_server_impl::reset_usage_scenario_options(
     target_opts->max_write_buffer_number = base_opts.max_write_buffer_number;
 }
 
+void pegasus_server_impl::recalculate_data_cf_options(
+    const rocksdb::ColumnFamilyOptions &cur_data_cf_opts)
+{
+#define UPDATE_OPTION_IF_NEEDED(option, value, str_value)                      
                    \
+    if ((value) != cur_data_cf_opts.option) {                                  
                    \
+        new_options[#option] = (str_value);                                    
                    \
+    }

Review Comment:
   when `new_options[#option] = #new_value;`run  the following statement:
   ```
   
UPDATE_OPTION_IF_NEEDED(level0_slowdown_writes_trigger,_data_cf_opts.level0_slowdown_writes_trigger)
   ```
   result is:
   ```
   new_options["level0_slowdown_writes_trigger"] = 
"_data_cf_opts.level0_slowdown_writes_trigger"
   ```



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