WHBANG commented on code in PR #1108:
URL: https://github.com/apache/incubator-pegasus/pull/1108#discussion_r944218454
##########
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:
`if (_data_cf_opts.option != cur_data_cf_opts.option) { ` is wrong
use level0_file_num_compaction_trigger as an example:
1. start_onebox, do not change the config template
```
cur_data_cf_opts.level0_file_num_compaction_trigger = 4
_data_cf_opts.level0_file_num_compaction_trigger = 4
```
2. set `usage scenario`is `bulk load`
```
cur_data_cf_opts.level0_file_num_compaction_trigger = 1000000000
_data_cf_opts.level0_file_num_compaction_trigger = 4
```
3. restart the db, will call LoadLatestOptions()
```
cur_data_cf_opts.level0_file_num_compaction_trigger = 1000000000
_data_cf_opts.level0_file_num_compaction_trigger = 4
```
At this time `_data_cf_opts.option != cur_data_cf_opts.option`, but in fact
the value of option is correct, nothing needs to be done, so need `(value) !=
cur_data_cf_opts.option) `
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