DeviousCardi
095c288f16
* fix(promql): honor @ modifier on subqueries `prom_subquery_expr_to_plan` never read the `at` field of a subquery, so `sum_over_time(m[20s:10s] @ 60)` was evaluated like `m[20s:10s]` and followed the outer evaluation grid. Handle `@` the way Prometheus does: fold the anchor into the subquery offset (`offset + (eval_start - anchor)`, as `setOffsetForAtModifier` does), evaluate the subquery once at the start of the evaluation, and replay the folded window over the outer grid, reusing the anchored range selector machinery. A call whose range argument is an anchored subquery is promoted as step-invariant, like one over an anchored range selector. `@ start()`/`@ end()` and `offset` combine as for selectors, and an unrepresentable anchor is rejected with the existing error. Closes #9411 Signed-off-by: Aarav <aaravsjadav@gmail.com> * test(promql): add sqlness cases for @ on subqueries Cover the #9411 reproducer end to end: `@ <ts>`, `@ start()`/`@ end()`, `@` combined with `offset` in either order, an instant query away from the anchor, `*_over_time` functions and `rate` over an anchored subquery, a computed inner expression, and an aggregation above the anchored call. Two series per table so a dropped or merged series shows up as a wrong row. Refs #9411 Signed-off-by: Aarav <aaravsjadav@gmail.com> --------- Signed-off-by: Aarav <aaravsjadav@gmail.com>
Sqlness Test
Sqlness manual
Case file
Sqlness has two types of file:
.sql: test input, SQL only.result: expected test output, SQL and its results
.result is the output (execution result) file. If you see .result files is changed,
it means this test gets a different result and indicates it fails. You should
check change logs to solve the problem.
You only need to write test SQL in .sql file, and run the test.
Case organization
The root dir of input cases is tests/cases. It contains several subdirectories stand for different test
modes. E.g., standalone/ contains all the tests to run under greptimedb standalone start mode.
Under the first level of subdirectory (e.g. the cases/standalone), you can organize your cases as you like.
Sqlness walks through every file recursively and runs them.
Kafka WAL
Sqlness supports Kafka WAL. You can either provide a Kafka cluster or let sqlness to start one for you.
To run test with kafka, you need to pass the option -w kafka. If no other options are provided, sqlness will use conf/kafka-cluster.yml to start a Kafka cluster. This requires docker and docker-compose commands in your environment.
Otherwise, you can additionally pass the your existing kafka environment to sqlness with -k option. E.g.:
cargo sqlness bare -w kafka -k localhost:9092
In this case, sqlness will not start its own kafka cluster and the one you provided instead.
Run the test
Unlike other tests, this harness is in a binary target form. You can run it with:
cargo sqlness bare
It automatically finishes the following procedures: compile GreptimeDB, start it, grab tests and feed it to
the server, then collect and compare the results. You only need to check if the .result files are changed.
If not, congratulations, the test is passed 🥳!