v.25.8Improvement

Allow using simdjson on unsupported architectures

Official CH changelog text
Allow using simdjson on unsupported architectures (previously leads to CANNOT_ALLOCATE_MEMORY errors). #84966 (Azat Khuzhin).
Allows the use of the simdjson library on previously unsupported CPU architectures in ClickHouse, preventing memory allocation errors.

Why it matters

This feature addresses the issue where enabling simdjson on unsupported architectures caused CANNOT_ALLOCATE_MEMORY errors. By expanding support, it improves ClickHouse's JSON parsing capabilities across more hardware platforms, increasing stability and usability.

How to use it

Users can now enable simdjson for JSON parsing on all supported architectures without encountering memory allocation errors. No additional configuration changes are required beyond enabling simdjson as usual.

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