ydb/library/cpp/yt/misc/hash.h, branch CLI_2.29.0 Mirror of YDB github repos https://code.mastervirt.ru/ydb/atom?h=CLI_2.29.0 2026-02-11T01:27:50Z YT-27167: Better TBitwiseUnversionedValueHash 2026-02-11T01:27:50Z pavook pavook@yandex-team.com 2026-02-11T01:03:48Z urn:sha1:72e2e4fb5634001484795bce3f6ca27e21b24905 +20-30% throughput on UpdateColumnarStatistics benchmark (with large statistics enabled) - Do not factor in value.Id when calculating column digest - Pack metadata directly instead of multiple HashCombine calls - Use SplitMix64 finalizer for proper bit distribution - Use cheaper xor with metadata instead of HashCombine - Use XXH3 for strings - Remove unnecessary copy - Measured quality increased: on 20 (c=1..20) sequences `{nc | n \in [1..10^6]}` MAE dropped from ~36% to ~20% HLL digests might temporarily suffer a 2x increase upon merging with the previously computed ones. commit_hash:0bf661245cf1848ba9ef8b6c840c18dfd05bd2a4 [core] YT-26666: Ensure shard index and bucket index independence for random keys in TAsyncExpiringCache 2025-12-01T07:16:57Z apachee apachee@yandex-team.com 2025-12-01T07:01:17Z urn:sha1:c98604868fab9069a770f322cd7c533c6bb8ed15 commit_hash:94c7b2f6b585daa4f3ff011c701500987b972356 NaN-safe comparison and hashing 2024-11-06T10:54:01Z babenko babenko@yandex-team.com 2024-11-06T10:24:38Z urn:sha1:b60a78031c047a8c8543bf6a3dc4f828d104dd3c commit_hash:46d59ab3acbd313753d3e46f3a6f10a8ebc424d8 Restoring authorship annotation for <babenko@yandex-team.ru>. Commit 2 of 2. 2022-02-10T13:49:19Z babenko babenko@yandex-team.ru 2022-02-10T13:49:19Z urn:sha1:f31097c96270919a1f49360bdaaa69ea4f3fefab Restoring authorship annotation for <babenko@yandex-team.ru>. Commit 1 of 2. 2022-02-10T13:49:19Z babenko babenko@yandex-team.ru 2022-02-10T13:49:19Z urn:sha1:cec37806d8847aa3db53bafc9e251d4aaf325c12 Restoring authorship annotation for <ignat@yandex-team.ru>. Commit 2 of 2. 2022-02-10T13:48:20Z ignat ignat@yandex-team.ru 2022-02-10T13:48:20Z urn:sha1:12d7840a194f4a6e4ea77a405f980074cf43e942 Restoring authorship annotation for <ignat@yandex-team.ru>. Commit 1 of 2. 2022-02-10T13:48:20Z ignat ignat@yandex-team.ru 2022-02-10T13:48:20Z urn:sha1:c8b279dd21ddcb47e755028d81281f113a0f4a11 intermediate changes 2022-02-07T15:08:42Z Devtools Arcadia arcadia-devtools@yandex-team.ru 2022-02-07T15:08:42Z urn:sha1:1110808a9d39d4b808aef724c861a2e1a38d2a69 ref:cde9a383711a11544ce7e107a78147fb96cc4029