russell@unturf.com 72c98d9af6 netty-0001 + dubbo-0002 + doris-0004: DNS dedup O(R²); MethodWalker O(2^D); NormalizeRepeat O(S×G); count 621→624 ... - netty-0001: DnsResolveContext.finalResult ArrayList.contains O(R²) dedup on DNS records File: resolver-dns/.../dns/DnsResolveContext.java line ~914 Fix: LinkedHashSet gives O(1) dedup with preserved insertion order Ratio: 24.5x at R=50 records - dubbo-0002: MethodWalker.walkHierarchy no visited guard — O(2^D) diamond recursion File: dubbo-rpc-triple/.../rest/util/MethodWalker.java walkHierarchy() Fix: add visited HashSet, return early if already visited Ratio: 8x at D=3 (common Spring proxy depth) - doris-0004: NormalizeRepeat.buildContextWithAlias ImmutableList.contains O(S×G) for GROUPING SETS File: fe-core/.../nereids/rules/analysis/NormalizeRepeat.java buildContextWithAlias() Fix: convert groupingSetExpressions to HashSet before loop — O(1) lookup Ratio: 49x for CUBE(c1..c8), 1000x+ for CUBE(c1..c10)		2026-03-29 22:11:57 -04:00
..
CLEAN.md	cpp-systems: tor CLEAN.md updated to note existing patches tor-0001/0002/0003	2026-03-29 19:54:59 -04:00
netty-0001-dns-resolve-context-finalresult-arraylist-dedup.md	netty-0001 + dubbo-0002 + doris-0004: DNS dedup O(R²); MethodWalker O(2^D); NormalizeRepeat O(S×G); count 621→624	2026-03-29 22:11:57 -04:00
netty-CLEAN.md	bazel-0003 + kicad-0002: build toolchain feature check + PCB zone filler O(Z²×L²); count 601→603	2026-03-27 22:38:32 -04:00