obfuscate_markov_* session settings

These settings are available in system.settings and are autogenerated from source.

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obfuscate_markov_determinator_sliding_window_size

Size of the sliding window in the source string that is hashed to seed the RNG in the obfuscate table function’s Markov model.

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obfuscate_markov_frequency_add

Constant added to every count in the obfuscate table function’s Markov model to lower probability distribution skew.

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obfuscate_markov_frequency_cutoff

Frequency cutoff for the Markov model used by the obfuscate table function: buckets with count less than this value are discarded.

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obfuscate_markov_frequency_desaturate

Value in [0, 1] that moves every frequency in the obfuscate table function’s Markov model towards the average to lower probability distribution skew.

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obfuscate_markov_num_buckets_cutoff

Cutoff for the number of different possible continuations for a context in the obfuscate table function’s Markov model: histograms with fewer buckets than this are discarded.

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obfuscate_markov_order

Maximum context-buffer size used by the legacy Markov model for the obfuscate table function. The model records contexts shorter than this value, preserving the semantics of the standalone clickhouse obfuscator tool. Must be in the range [1, 1000].