ceph/src/rocksdb/docs/_posts/2016-03-07-rocksdb-options-file.markdown

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   2 title: RocksDB Options File
   3 layout: post
   4 author: yhciang
   5 category: blog
   6 redirect_from:
   7   - /blog/3089/rocksdb-options-file/
   8 ---
   9
  10 In RocksDB 4.3, we added a new set of features that makes managing RocksDB options easier.  Specifically:
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  12   * **Persisting Options Automatically**: Each RocksDB database will now automatically persist its current set of options into an INI file on every successful call of DB::Open(), SetOptions(), and CreateColumnFamily() / DropColumnFamily().
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  16   * **Load Options from File**: We added [LoadLatestOptions() / LoadOptionsFromFile()](https://github.com/facebook/rocksdb/blob/4.3.fb/include/rocksdb/utilities/options_util.h#L48-L58) that enables developers to construct RocksDB options object from an options file.
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  20   * **Sanity Check Options**: We added [CheckOptionsCompatibility](https://github.com/facebook/rocksdb/blob/4.3.fb/include/rocksdb/utilities/options_util.h#L64-L77) that performs compatibility check on two sets of RocksDB options.
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  24 Want to know more about how to use this new features? Check out the [RocksDB Options File wiki page](https://github.com/facebook/rocksdb/wiki/RocksDB-Options-File) and start using this new feature today!