dennis zhuang
78a7b93292
* fix(promql): align timestamp() and label_join with Prometheus semantics - timestamp() over a selector reports the selected sample's timestamp, without adding the offset. - timestamp() over any other expression reports the evaluation time instead of the input value. - label_join that overwrites an existing label rejects duplicate label sets at runtime. Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * fix(promql): align label_replace and label_join edge cases with Prometheus - label_replace leaves non-matching series unchanged instead of copying the source value into the destination label. - label_replace may overwrite an existing label; duplicate label sets are rejected at runtime like label_join. - label_join with no source labels removes the destination label, and an empty source label name is rejected. - Empty label values produced by these functions are NULL, the same as an absent label. Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * fix(promql): join absent labels as empty strings in label_join concat_ws skips NULL arguments together with their separator, so a label that is absent (NULL) dropped its separator, e.g. label_join(label_join(vector(1), "a", "", "missing"), "b", "-", "a", "a") lost b="-". Read every source label as coalesce(label, '') like label_replace does. Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * fix(promql): skip rows without a sample in timestamp() timestamp() replaced the input fields with the timestamp before the empty-value filter ran, so a row whose fields were all NULL got a timestamp, e.g. timestamp(-m) for a NULL sample. Filter such rows before the projection, for both the selector and the evaluation-time paths. Signed-off-by: Dennis Zhuang <killme2008@gmail.com> --------- Signed-off-by: Dennis Zhuang <killme2008@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 🥳!