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Temporarily disable server-side AST fuzzer in Stress Test and BuzzHouse#100439
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Set `ast_fuzzer_runs` back to 0 (default) in stress test and BuzzHouse CI configs while stability issues are being addressed. See #100437 Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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The stress test profile sets `ast_fuzzer_runs=5`, enabling server-side AST fuzzing for all queries. When the hung check runs its `SELECT count() FROM system.processes` query via HTTP, the fuzzer mutates it and spawns additional queries that appear in the processlist — creating a self-referential loop where the hung check always sees > 0 queries. Two fixes: 1. Add `ast_fuzzer_runs=0` to the default HTTP params in `clickhouse_execute_http`, so infrastructure queries are not fuzzed. 2. When `get_processlist_with_stacktraces` times out, re-check `get_processlist_size` — if queries finished, don't fail. References: ClickHouse#100439 Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Temporarily disable
ast_fuzzer_runsin Stress Test and BuzzHouse CI configs while stability issues are being addressed.Alternative to full revert in #100437 — this only removes the CI config settings without reverting the C++ code improvements.
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26.4.1.152