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

text_index_dictionary_block_frontcoding_compression

Default front-coding compression for text index dictionary blocks. Can be overridden by explicit dictionary_block_frontcoding_compression index argument.

text_index_dictionary_block_size

Default dictionary block size for text indexes. Can be overridden by explicit dictionary_block_size index argument.

text_index_max_memory_usage_before_flush

Maximum estimated memory retained by a text index builder before flushing a temporary segment.

text_index_max_processed_tokens_before_flush

Maximum number of processed tokens accumulated by a text index builder before flushing a temporary segment.

text_index_posting_list_block_size

Default posting list block size for text indexes (rows). Can be overridden by explicit posting_list_block_size index argument.

text_index_posting_list_codec

Default posting list codec for text indexes. Can be overridden by explicit posting_list_codec index argument.
Last modified on August 3, 2026