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dennis zhuang
5b17bbd584
* feat(promql): run info() natively
info(v, {selector}) fell back to the existing plan, which has no info
and refuses the query ("Unsupported expr type: info", or "Cannot accept
multiple vector as function input" when a selector is given).
Compile it into the native tree and run it on the info kernel:
- Plan: NativeExpr::Info { base, info, selector }. The info side is an
instant selection reporting each selected sample's own time in
milliseconds (InstantValue::InfoTimestamp, which replaces the
BoundInstant.timestamp flag); validation refuses any other info side.
- Compiler: info_input derives the info selector the way Prometheus
does: target_info or one __name__="..." matcher, the data matchers,
and the @ and offset every selector of the first argument shares
(subquery offsets added until an @ anchors them, none when they
differ). Regex or negative name matchers, which can select several
tables, __field__/__schema__/__database__ matchers and multi-field
info tables are refused. The planner's selector walk uses the same
helper, so both bind the info table as the last input.
- Runtime: BinaryRuntime runs the kernel as PairKernel::Info, with the
retention and pool accounting of binary and set nodes; the kernel
reports its workspace through info_with_reservation.
- Planner: the info table is a second table, so it is read through its
own RawSeriesSource and the node runs on the frontend. The output adds
the info table's tags, or only the data labels the selector names.
Partitioned or non-Mito tables and a missing info table keep the
existing plan.
Signed-off-by: Dennis Zhuang <killme2008@gmail.com>
* test(promql): pin region-local placement of info over its own table
info(rate(target_info[5m])) reads the info table twice. Check that the
planner binds both as direct scans under one FusedSeries node bound to
the table, that the node is placed in the region, and the columns it
reports.
Signed-off-by: Dennis Zhuang <killme2008@gmail.com>
* fix(promql): keep sample-less base series out of info's identifying patterns
Signed-off-by: Dennis Zhuang <killme2008@gmail.com>
* fix(promql): share identifying label strings in info() instead of copying them
Signed-off-by: Dennis Zhuang <killme2008@gmail.com>
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Signed-off-by: Dennis Zhuang <killme2008@gmail.com>