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twmht / python-rocksdb

Python bindings for RocksDB
BSD 3-Clause "New" or "Revised" License
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PrefixExtractor does not use readoptions #68

Open patkivikram opened 5 years ago

patkivikram commented 5 years ago

As per rocksDB API the ReadOptions.prefix_same_as_start=true has to be provided to take advantage of reduces IO scans. I don't see a way to set the options . These are the only options supported

        cdef options.ReadOptions opts
        opts.verify_checksums = py_opts['verify_checksums']
        opts.fill_cache = py_opts['fill_cache']
        if py_opts['snapshot'] is not None:
            opts.snapshot = (<Snapshot?>(py_opts['snapshot'])).ptr

        if py_opts['read_tier'] == "all":
            opts.read_tier = options.kReadAllTier
        elif py_opts['read_tier'] == 'cache':
            opts.read_tier = options.kBlockCacheTier
        else:
            raise ValueError("Invalid read_tier")

        return opts