Ning Sun
10a977a5d8
Address review feedback on the overflow guard: - preflight: when the frontend operator receives a widening alter on the time index, run an existence scan (ts outside the target unit's i64 range, LIMIT 1, via the query engine so it covers every region of the table in both standalone and distributed modes) BEFORE any DDL task is submitted. A region that fits can no longer commit the new schema while another region rejects the alter with a non-retryable error. File and row-group pruning keep the scan cheap when nothing overflows. The per-region check in mito2 stays as the final guard for data written after the preflight (the remaining race window); without a validate-only wire field (region.proto lives in the external greptime-proto repo) a fully atomic two-phase validate/commit is out of scope here. - fast path: cast_timestamp_unit returns the filter unchanged when the literal is already in the target unit, skipping the div-mod rebuild. Signed-off-by: Ning Sun <sunning@greptime.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 🥳!