Ning Sun
fcd9a917ce
Follow-up to the review feedback on CompatBatch/prune reader/filter handling for widened time index units. Between/InList/IsNull predicates are prefiltered by PhysicalFilterContext, which builds its physical expression against the FILE's schema while the predicate literals are in the expected (post-alter) unit. Evaluating them against an old-unit SST raised a cross-unit comparison error (Timestamp(ms) >= Timestamp(µs)) that failed the whole scan. Physical prefilter predicates are best-effort pruning hints (the query layer re-applies them above the scan), so drop the prefilter when the column's file type differs from the expected type, mirroring the simple-filter strategy. Verified: Between and a non-rewritten (large) InList on old-unit data no longer error and filter exactly end-to-end (sqlness), and no matching rows are lost at the engine level (engine test). 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 🥳!