Commit Graph

1 Commits

Author SHA1 Message Date
Robert Schulze
2c828338f4
Replace hyperscan by vectorscan
This commit migrates ClickHouse to Vectorscan. The first 10 min of
[0] explain the reasons for it.

(*) Addresses (but does not resolve) #38046

(*) Config parameter names (e.g. "max_hyperscan_regexp_length") are
    preserved for compatibility. Likewise, error codes (e.g.
    "ErrorCodes::HYPERSCAN_CANNOT_SCAN_TEXT") and function/class names (e.g.
    "HyperscanDeleter") are preserved as vectorscan aims to be a drop-in
    replacement.

[0] https://www.youtube.com/watch?v=KlZWmmflW6M
2022-06-24 10:47:52 +02:00