udpate README #1
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TendisDev
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Jan 19, 2021
RocksDB version update to 6.14.5
1) 默认关闭新版本, 还是使用 RocksDB 5.13.4
## RocksDB 兼容性修改
1) TableFactory::GetOptions() 的修改
6.14 版本改为如下方式: `table_factory->GetOptions<rocksdb::BlockBasedTableOptions>()`。
2) `getProperty:rocksdb.levelstatsex`
暂时未修改, 为我们添加的功能
3) RocksDB `getBaseDB()->Resume()`
5.13.4 不支持, 新版本才支持
## ASAN 工具集成
编译方式如下:
`cmake -DCMAKE_BUILD_TYPE=Debug -DWITH_ASAN=ON -DENABLE_JEMALLOC=OFF ..`
可以流水线自动跑, 目前有几个。
目前检测出一处内存泄漏, 已修复。`rocksdb::Checkpoint* checkpoint` 的释放。
遗留: 有几个单元测例应该没有内存泄漏, 报如下错误, 实际中应该可以忽略。
```sh
==34329==ERROR: LeakSanitizer: detected memory leaks
Direct leak of 48 byte(s) in 2 object(s) allocated from:
#0 0x4a1bba in operator new(unsigned long, std::nothrow_t const&) ../../../../libsanitizer/asan/asan_new_delete.cc:65
#1 0x7fde603a7d65 in __cxa_thread_atexit ../../../../libstdc++-v3/libsupc++/atexit_thread.cc:142
SUMMARY: AddressSanitizer: 48 byte(s) leaked in 2 allocation(s).
```
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