 shuiyisong
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5fe9bdc814
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feat(prometheus): store Remote Write v1 and v2 exemplars (#9922)
* feat(prometheus): persist Remote Write exemplars
Prometheus Remote Write v1 and v2 now persist valid exemplars in the source schema's metrics_exemplars table. A shared row contract keeps inherited series labels separate from exemplar labels, creates or validates an ordinary sparse append table, and preserves compatible pre-created timestamp precision.
Malformed observations are dropped and counted without discarding valid samples or sibling exemplars. Permissions and admission precede writes, and v2 written-count headers use confirmed storage progress. Includes decoder, HTTP orchestration and physical-table routing coverage. The JSON2 row-schema helper becomes fallible; its three existing trace callers propagate that error in this layer.
Signed-off-by: shuiyisong <xixing.sys@gmail.com>
* feat(exemplar): persist source metric identities
Signed-off-by: shuiyisong <xixing.sys@gmail.com>
* fix(prometheus): bound exemplar write memory
Signed-off-by: shuiyisong <xixing.sys@gmail.com>
* fix(prometheus): correct batching with exemplars
Signed-off-by: shuiyisong <xixing.sys@gmail.com>
* fix(exemplar): accept mixed-case sparse encoding
Signed-off-by: shuiyisong <xixing.sys@gmail.com>
* perf(exemplar): reduce write preparation overhead
Signed-off-by: shuiyisong <xixing.sys@gmail.com>
* perf(prom): reuse exemplar source targets
Signed-off-by: shuiyisong <xixing.sys@gmail.com>
* fix: clippy
Signed-off-by: shuiyisong <xixing.sys@gmail.com>
* fix(prometheus): defer exemplar series expansion
Signed-off-by: shuiyisong <xixing.sys@gmail.com>
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Signed-off-by: shuiyisong <xixing.sys@gmail.com>
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2026-11-03 11:43:33 +00:00 |
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