Lei, HUANG 931556dbd3 perf(metric-engine)!: Replace mur3 with fxhash for faster TSID generation (#7316) ...

* feat/change-tsid-gen:
 perf(metric-engine): replace mur3 with fxhash for faster TSID generation

 - Switches from mur3::Hasher128 to fxhash::FxHasher for TSID hashing
 - Pre-computes label-name hash when no nulls are present, avoiding redundant work
 - Adds fast-path for rows without nulls; falls back to slow path otherwise
 - Updates Cargo.toml and lockfile to reflect dependency change

Signed-off-by: Lei, HUANG <mrsatangel@gmail.com>

* feat/change-tsid-gen:
 fix: only check primary-key labels for null when re-using cached hash

 - Rename has_null() → has_null_labels() and restrict the check to the
   primary-key columns so that non-label NULLs do not force a full
   TSID re-computation.
 - Update expected hashes in tests to match the new logic.

Signed-off-by: Lei, HUANG <mrsatangel@gmail.com>

* feat/change-tsid-gen:
 test: add comprehensive TSID generation tests for label ordering and null handling

Signed-off-by: Lei, HUANG <mrsatangel@gmail.com>

* feat/change-tsid-gen:
 bench: add criterion benchmark for TSID generator

 - Compare original mur3 vs current fxhash fast/slow paths
 - Test 2, 5, 10 label sets plus null-value slow path
 - Add mur3 & criterion dev-deps; register bench target

Signed-off-by: Lei, HUANG <mrsatangel@gmail.com>

* feat/change-tsid-gen:
 test: stabilize metric-engine tests by fixing non-deterministic row order

 - Add ORDER BY to SELECTs in TTL tests to ensure consistent output
 - Update expected __tsid values after hash function change
 - Swap expected OTLP metric rows to match new ordering

Signed-off-by: Lei, HUANG <mrsatangel@gmail.com>

* feat/change-tsid-gen:
 refactor: simplify Default impls and remove redundant code

 - Replace manual Default for TsidGenerator with derive
 - Remove unnecessary into_iter() call
 - Simplify Option::unwrap_or_else to unwrap_or

Signed-off-by: Lei, HUANG <mrsatangel@gmail.com>

---------

Signed-off-by: Lei, HUANG <mrsatangel@gmail.com>

2025-12-02 08:38:29 +00:00

..

grpc.rs

feat: reloadable tls client config (#7230)

2025-11-24 11:52:11 +00:00

http.rs

perf(metric-engine)!: Replace mur3 with fxhash for faster TSID generation (#7316)

2025-12-02 08:38:29 +00:00

main.rs

feat!: enable read cache and write cache when using remote object stores (#5093)

2024-12-10 04:03:44 +00:00

region_migration.rs

perf(metric-engine)!: Replace mur3 with fxhash for faster TSID generation (#7316)

2025-12-02 08:38:29 +00:00

sql.rs

feat: simple read write new json type values (#7175)

2025-11-27 12:40:35 +00:00