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Support trino in iceberg tests & add test for minimal v3#104849
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`clickhouse_fuzzer` runs the full `clickhouse-local` binary (see
`programs/local/fuzzers/clickhouse_fuzzer.cpp`) which spins up a complete
clickhouse-server-grade runtime: JeMalloc arenas, OpenSSL initializer,
static initializers, and full query execution. Baseline RSS is close to
the libFuzzer default `rss_limit_mb=2048`, so fuzzed inputs that trigger
even moderate query-time allocations push the process past the limit.
CIDB shows 7 unrelated PRs in 7 days all hitting OOM at 2049-2056 Mb —
just barely over the 2048 Mb default. Failure mode is uniform:
libFuzzer out-of-memory (used: 2049-2056Mb; limit: 2048Mb) oom-<hash>
Bumping to 4096 Mb follows existing precedent for fuzzers with similar
workloads:
- `execute_query_fuzzer.options`: rss_limit_mb = 4096 (also runs query
execution; same author bumped this in commit bafb7d7)
- `data_type_deserialization_fuzzer.options`: rss_limit_mb = 4096
- `create_parser_fuzzer.options`: rss_limit_mb = 6144
The limit still bounds the target (it does not disable the check via
`rss_limit_mb=0`), so genuine memory regressions above 4 GB will still
be caught.
CIDB evidence (last 30 days, all 10 hits — 0 on master because libFuzzer
does not run on master regularly):
PR ClickHouse#99740 (4 hits, Apr 19-21)
PR ClickHouse#104231, ClickHouse#104849, ClickHouse#104956, ClickHouse#96844, ClickHouse#104510, ClickHouse#104492 (1 hit each,
May 13-15)
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LLVM Coverage Report
Changed lines: 68.85% (42/61) | lost baseline coverage: 1 line(s) · Uncovered code |
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Changelog entry (a user-readable short description of the changes that goes into CHANGELOG.md):
Support trino in iceberg tests
Version info
26.5.1.854