ydb/yt/cpp, branch main

YT-27970: add opt-in native client side multiplexing

2026-07-19T13:32:19Z

commit_hash:87de51fe271596eaf0354bc99ef472e3a3c29d0f

YT-28161: Add Commit options

2026-07-18T10:04:56Z

commit_hash:254111f674ff4126bd7781741ad035f436bfa073

YT-28451: Add tagged logging API and opaque event payload

2026-07-17T09:07:46Z

Replace `TLogEvent::MessageRef` with an opaque `Payload` that carries the message together with structured key/value tags, deferring tag rendering to the consumer (logging thread). - Add the `TTaggedPayloadWriter`/`TTaggedPayloadReader` codec (`NDetail`), with a per-thread chunk-cached builder so tagged logging does no per-message heap allocation. - Model the payload as a typed `TLogEventPayload` — a `std::variant` of the opaque strong typedefs `TTaggedLogEventPayload` and `TStructuredLogEventPayload` (each over `TSharedRef`). The active alternative identifies the event kind, so the separate `ELogMessageKind` enum and `TLogEvent::MessageKind` field are removed; consumers dispatch via `std::holds_alternative`/`std::get` instead of a tag. - Add the fluent `YT_TLOG_*` API: `YT_TLOG_INFO("Message").With(key, value)` and `.With(key, value, "%spec")`; disabled levels skip argument evaluation. - Add well-known tags: `.With(value)` attaches a value under a statically known key resolved by ADL (e.g. `.With(error)` for the `Error` tag). - Teach the plain-text and structured formatters to render tags; add the `enable_native_tags` knob to emit tags into a nested structured attribute. - Add producer-side benchmarks. The tagged API is cheaper than `YT_LOG_*` for tagged calls and on par for tag-free ones: #| || **Producer call** | **`YT_LOG_*`** | **`YT_TLOG_*`** | **Δ** || || no tags | 81 ns | 82 ns | +2% || || 1 tag | 124 ns | 88 ns | -29% || || 2 tags | 140 ns | 101 ns | -28% || || 3 tags | 372 ns | 283 ns | -24% || |# -- #| || **![](https://nda.ya.ru/t/mAiQIjHx7Mm3JC =30x) Echo tests** || |# commit_hash:70efc90e5c2b71e5311415a4e4508db42ff28971

Revert "YT-27827: TPingerTransaction use BlockingGet instead of WaitFor in destructor"

2026-07-03T20:23:22Z

This reverts commit 90bbe36635e0d48c81c153567dcedf28f103efbe, reversing changes made to 270d7be117d1eacc9c8aff93d9aaeb510fa910e2. commit_hash:23c13dd27b089f56e049580d1416d17a22c4bc80

retry MasterDisconnected error

2026-07-01T06:09:04Z

commit_hash:c69288b219a7b906cc9427b23ddc599f149fb77c

YT-28516: Don't initialize storage for streams

2026-06-21T22:33:24Z

commit_hash:f8f1ac8f679dae4ba11c4c52582798b12b550552

YT-28380: Add CheckClusterLiveness to C++ SDK

2026-06-15T10:54:52Z

* Changelog entry Type: feature Component: cpp-sdk Add CheckClusterLiveness handle commit_hash:9b3f23b70fb639693a67edbe9ed2b80683fea61b

YT-22593: Migrate TOperationIdOrAlias alias to std::string

2026-06-14T18:15:45Z

Change the alias alternative of the operation id-or-alias variant to std::string and propagate through the visitor lambdas, ResolveOperationAlias, the driver OperationAlias field and the clickhouse handler. commit_hash:6aab0b10eeb1367a1ec4c4d829855c7dd3cf4347

YT-22593: Migrate TString to std::string in yt/yt/client/api option fields

2026-06-14T14:22:47Z

Migrate the string option/struct fields in the api headers to std::string and propagate the change through the native client attribute helpers, list_operations, operation cache and the api-bound driver accessors. A cold to_lower boundary keeps a TString cast. commit_hash:2541bfe57f03e50212c1b8f9abb394d403a9dafb

YT-28419: Drop redundant guard #undef from -inl.h files

2026-06-14T11:11:09Z

The `.h` owns the #undef of its `_INL_H_` guard; duplicating it in the `-inl.h` is redundant. Align the minority that did so with the majority. commit_hash:51be59f9d1b93ad152ed5cb07c76088edd6c3e36