Commit Graph

4 Commits (b10d5e02fb6e30eb2aa6d0003096f8570a716243)

Author SHA1 Message Date
Arve Knudsen 89bbb885e5
Upgrade to golangci-lint v1.62.0 (#15424)
Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>
2024-11-20 17:22:20 +01:00
Filip Petkovski 2cd97c61e0
Add more test cases
Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>
2024-07-29 14:53:32 +02:00
Filip Petkovski be7a4c9b83
Ignore stale histograms for counter reset detection
The histogram stats decoder keeps track of the last seen histogram sample
in order to properly detect counter resets. We are seeing an issue where
a histogram with UnknownResetHint gets treated as a counter reset when it follows
a stale histogram sample.

I believe that this is incorrect since stale samples should be completely ignored
in PromQL. As a result, they should not be stored in the histogram stats iterator
and the counter reset detection needs to be done against the last non-stale sample.

Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>
2024-07-26 10:08:31 +02:00
Filip Petkovski 6e68046c25
Implement histogram statistics decoder (#14097)
Implement histogram statistics decoder

This commit speeds up histogram_count and histogram_sum
functions on native histograms. The idea is to have separate decoders which can be
used by the engine to only read count/sum values from histogram objects. This should help
with reducing allocations when decoding histograms, as well as with speeding up aggregations
like sum since they will be done on floats and not on histogram objects.

Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>

---------

Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>
Co-authored-by: Anthony Mirabella <a9@aneurysm9.com>
2024-06-06 17:17:13 +02:00