mrambacher 7aa31ba4a9 Fix GetOptionsPtr for Wrapped Customizable; Allow null options map (#9213)
Summary:
1.  Fix GetOptionsPtr for Wrapped (Inner() != nullptr) Customizable objects.  This allows the inner options to be returned via this method.

2.  Allow the option type map to be nullptr.  This allows objects to be registered as options (for GetOptionsPtr) but not be used by the configuration methods.

Added tests as appropriate.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9213

Reviewed By: zhichao-cao

Differential Revision: D32718882

Pulled By: mrambacher

fbshipit-source-id: 563203d1f006a2629060feb31c5dff9a233e1e83
2021-11-30 13:23:25 -08:00
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